2018-2022年广东中考英语5年真题1年模拟汇编 专题04 阅读理解之说明文（学生卷+教师卷）

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5年（2018-2022）中考1年模拟英语真题分项汇编（广东专用）
专题03 阅读理解之说明文

（2022·广东广州·中考真题）
Charles Darwin
Early yearsCharles Darwin was one of the six children from a big family. His grandfather and father were doctors and the young Darwin went to Edinburgh University to study medicine. However, he hated to see blood and he soon realized that he couldn’t be a doctor. He then went to Cambridge University and discovered that he had a great interest in studying plants, insects and animals. Luckily, one of Darwin’s university teachers helped him, join the perfect trip for a biologist: a voyage around the world to study nature.
The Beagle

In 1831, Charles Darwin left Plymouth on The Beagle, a ship that took him around the world for five years. While he was travelling, he studied the plants and animals in the countries and on the islands that the ship visited. Darwin also spent his time on The Beagle writing notes about the things he had seen. When he finally arrived back in Britain, Darwin was already starting to create his famous theory that all living things had a common ancestor (祖先).
Down house

At home at Down House, a place that you can still visit today, Darwin wrote many articles and books about his travels, but he didn’t want to make anything about his theory known to the public. He worked in his study, where he wrote 250,000 words about his theory of evolution (进化论), but he was frightened about what people might say about his idea that monkeys were the ancestors of humans. He thought the public would be against it and was so frightened that he became ill with worry. However, when another scientist started to write about similar ideas, Darwin decided to print his book, On the Origin of Species.
Most scientists accepted Darwin’s theory and people continue to study it today. On 12th February, the day he was born, Darwin Day is celebrated around the world to encourage more people to study the natural world.
10．What caused Darwin to give up his study of medicine?
A．He didn’t like seeing blood. B．He found the studies too difficult.
C．He was pushed to give up by his family. D．He was advised to study natural science.
11．Why was the trip on The Beagle important to Darwin?
A．It helped him to finish his study at the university.
B．It allowed him to change his mind about his future.
C．It gave him ideas about the beginnings of human life.
D．It got him to complete his most famous book on the ship.
12．In what order did the following happen in Darwin’s life?
a. He arrived back in Britain in 1836.
b. He thought the public would not support his ideas.
c. He became interested in studying the natural world.
d. He printed his famous book, On the Origin of Species.
e. He received help to get a place on a trip around the world.
f. He studied the plants and animals on the islands he visited.
A．e→f→c→a→b→d B．c→e→f→a→b→d C．e→f→a→c→d→b D．c→e→f→d→a→b
13．Why did the writer include the last paragraph?
A．To introduce Darwin’s famous book.
B．To tell how people celebrate Darwin Day.
C．To explain why people accept Darwin’s ideas.
D．To show Darwin’s influence on natural science.
（2022·广东广州·中考真题）
When you and your friends turn to each other to talk about problems or troubles, you give each other advice and help. One important thing of our growth is to make decisions to help our friends and learn to support each other. This requires us to learn what it means to help friends and how to help them in right ways.
The first step toward helping others is to identify that they need help. We all know that difficulties are part of our daily lives. However, sometimes small things can lead to more serious problems that require more help. It’s important to make sure when to help a friend. For example, you may pick up some signs that your friends are not acting like themselves. These signs show they may not be well.
The next step toward helping others is to listen. Paying attention to others while listening is very important throughout our life. When we communicate with others, we need to learn when to speak and when not to. As listeners, we should try to understand what the speakers are feeling or experiencing and try to see things from their perspectives. Listening and paying attention to others when they speak is a sign of respect and a skill that will lead to deeper and better relationships.
19．What is the purpose of the passage?
A．To discuss why people help each other. B．To describe the problems of giving help.
C．To introduce the advantages of giving help. D．To explain how we can help others properly.
20．What does the underlined word “identify” in paragraph 2 mean?
A．Require. B．Discover. C．Suggest. D．Remember.
21．What is the main idea of paragraph 3?
A．Act as a good listener to your friends. B．Learn how to give advice to your friends.
C．Pay attention to your friends’ unusual acts. D．Build good relationships with your friends.
22．According to the writer, what should you do if your friends don’t follow your advice on their serious problems?
A．Keep their problems as secrets. B．Let them make their own decisions.
C．Find out the causes of their problems. D．Get help from their trusted teachers.
（2022·广东广州·中考真题）
Imagine you are in a new city. You ask someone how to get to a bookstore. They tell you to go straight, turn left, and you will find it on your left. In fact, you can also find your way with a phone. Now imagine you are in an outdoor game. You only have a map and a compass, and instead of running down a city road, you may need to run around in the woods, climb over rocks and go up and down hills. Welcome to orienteering!
In the game of orienteering, players use a map and a compass to find stations. These stations are called controls. A special flag, usually in bright colours, marks each control. Controls are not easy to find. They may be in front of a big rock or behind a tree. In most of the games, you’ll have to find controls in numbered order, but in some games you can change the order.
At each control, players mark a card they carry with them and the card will be marked in different ways ( See Figure 1 ). The cards are very important because players must find all the controls to win. If someone misses a control, they won’t have that mark on their cards. They might cross the finish line first, but the next person to finish with a full card will win the game.
Orienteering Control Card


Culture Note: The first compass was invented by ancient Chinese people. It helps you find your way by always pointing to the North.
Name
Start time
Course
Age
Class
Finish time
1

2

3

4

5

6
7

8

9

10
11

12


Figure 1
23．What will players carry in the game?
A．A map, a compass and a flag. B．A flag, a compass and a card.
C．A compass, a map and a card. D．A phone, a compass and a map.
24．Which of the following is a rule of the game?
A．You don’t need to mark the cards.
B．You can’t miss any of the controls to win.
C．You have to find controls in numbered order.
D．You must be the first to pass the finish line to win.
25．How many controls has Anna finished in the game?
A．9. B．10. C．11. D．12.
（2019·广东中考真题）
In our daily life, robots are often found to do work that is too dangerous, boring, difficult, or dirty. And we often see kids play with toy robots.
But what exactly is a robot? There are some important characteristics(特征 ) that a robot must have. These characteristics might help you to decide what is and what is not a robot. It will also help you to decide what you will need to build into a machine before it can be considered as a robot. A robot has these important characteristics.
Sensing First of all, your robot would have to be able to sense the environment around it. Give your robot sensors (传感器)：light sensors( eyes ), touch sensors (hands), chemical sensors(nose), hearing sensors(ears) and taste sensors (tongue).
Movement A robot needs to be able to move around its environment. It can move on wheel, walk on legs or be driven by small engines(发动机). A robot can move either the whole body or just parts of it.
Energy A robot needs to be able to power itself. Some robots might power itself with sunlight, some might with electricity, while others with the battery(电池). The way your robot gets its energy will depend on what your robot needs to do.
Intelligence A robot needs some kind of "smarts". A programmer is the person who gives the robot its "smarts". The robot will have to have a certain way to receive the program so that it knows what it is to do.
42．The underlined word "it" in Paragraph 2 is about ____.
A．the toy B．the characteristic C．the machine D．the engine
43．The chemical sensors may help a robot to ____.
A．See B．catch C．hear D．smell
44．In how many ways can a robot power itself according to the passage?
A．Two. B．Three. C．Four. D．Five.
45．The Chinese meaning of "Intelligence" in the last paragraph is ____.
A．能源 B．勤奋 C．智能 D．外观
46．What is the main purpose of the passage?
A．To help people understand what a robot is.
B．To tell what a robot can do in our life.
C．To describe the movement of a robot.
D．To introduce the history of robots.
（2019·广东广州中考真题）
They say that “travel is the best teacher” and there is no better example of this idea than the Ming dynasty travel writer and geographer Xu Xiake (1587-1641). His book The Travel Notes of Xu Xiake, not only encouraged a love of travelling among Chinese people but provided important scientific information about the country's land and geography.
Born into a wealthy Jiangyin family, Xu became interested in books about different places at an early age and wanted to travel. When he was 18, however, Xu's father died and so, it seemed impossible for his travelling dreams. He now was responsible for the family farm and taking care of his 60-year-old mother as tradition required.
But his mother had different ideas. Understanding her son’s love of travel and valuing the knowledge he could get from such experiences, this modern-thinking woman refused to keep her son at home. She agreed that Xu could travel for three months every year, when there was less farm work.
So at the age of twenty and with his mother's support, Xu set off for the first time, leaving behind not only his mother but his new wife as well. He would repeat this goodbye each year for most of the next 30 years. During this time, he travelled throughout the Ming kingdom, carefully studying the lands he passed through and recording his experiences and many discoveries in a diary. This diary, which once had over 500,000 words, would eventually become The Travel Notes of Xu Xiake.
Although rich, Xu avoided comfortable travel, preferring to go almost everywhere on foot. This way he could research the environment in detail and get a true picture of the natural world. Many of his trips were to hard-to-reach mountain areas, and through wild forests where few people lived. His willingness to face hardships came at a cost, however. Progress was slow and tiring and he was frequently sick, robbed and beaten during his journeys
Sadly Xu became seriously ill during his last and longest journey, a 4-year trip through the Southwest of China. He died in 1641, soon after returning to his hometown for the last time. When his diary was finally printed years after his death, much of it had been destroyed or lost. Although incomplete, it still made Xu a travelling legend around the world.
47．What is the passage mainly about______.
A．The general details of Xu Xiake's life story
B．The difficulties Xu Xiake faced in his travels
C．The important discoveries made by Xu Xiake
D．The influence of Xu's book The Travel Notes of Xu Xiake
48．Which of the following best describes Xu's mother?
A．Strict but interesting B．Kind but uneducated
C．Helpful and hardworking D．Supportive and open-minded
49．Why did Xu prefer walking during his travels?
A．It gave him the chance to meet different kinds of people.
B．It helped him to save money and travel for a longer time.
C．It allowed him to see and study the environment in detail.
D．It was the only way to reach the places he was interested in.
50．What is true about Xu's book The Travel Notes of Xu Xiake?
A．It was only made public after Xu died.
B．It made Xu very famous during his lifetime.
C．It was the first travel book ever written in China.
D．It was mainly about the different people of China.
51．What is the correct order for the following events from Xu's life?
a. He went on his first journey.
b. His book was finally printed.
c. He returned to his hometown for the last time.
d. He developed an interest in books about other places.
e. He started managing the family farm after his father died.
A．a-e-d-c-b B．d-e-a-c-b C．d-e-a-b-c D．e-d-a-b-c
（2019·广东深圳市·中考真题）
Sending packets， shopping for everyday goods and even building a house， these are new skills that new robots show at the World Robot Exhibition．
RoBohoN
Scientists are recommending the latest talking robots． They can be highly intelligent in their responses． RoBohoN， just 10cm tall， makes a lively description of the Great Wall and the Palace Museum． It can speak Chinese， English or any other language you like．
Human Support
This robot stands at 1m tall and looks like a container with arms． It provides much support to different places and keeps in touch with the outside world through the internet．
HRP﹣5P
As world cities continue developing， there are building sites everywhere， but there aren't enough people to build them． HRP﹣5P looks like a strong builder． It stands at 1.8m tall and weighs 101 kg．
It is created to carry out the heavy building tasks．
CarriRo
CarriRo， in the shape of a toy bus， has friendly "eyes" on its front． It works as a postman and sends packages by rolling around the streets． It has a GPS to travel． The person who receives the package is sent a code to the smart phone to open the CarriRo and
get the package．
52．How tall is the RoBohoN？
A．0.1 meter B．1 meter C．1.8 meter D．101 meters
53．Which Robot is the best helper to the old people's homes？
A．RoBohoN B．Human Support Robot
C．HRP﹣5P D．CarriRo
54．How does the owner of the package open the CarriRo？
A．by working as a postman B．by rolling around the street
C．by following the GPS D．by using the code
55．In which part of a newspaper can we find this passage？
A．culture B．sports C．science D．people
（2019·广东深圳市·中考真题）
The journey to and from school is a major reason for stress throughout the world．And the journey can even make you sick．Yet one city has found a way to make its train journeys more comfortable while offering enjoyable reading at the same time，just like in a library．
On two train lines in Beijing，the underground cars（车厢）have been turned into libraries，but they're not traditional libraries．Instead of real copies of books，the underground cars provide e﹣books．
When passengers get into the cars，they can see pictures of different book covers on the walls and even doors．Passengers can browse（浏览）the books just like in any other library．Once they've made their choice，they can use a mobile phone to scan the QR code（扫二维码）on the cover of their chosen book．The QR code leads to an e﹣book app，on which the passengers can read the e﹣book for free．And they can still enjoy the book on the app even after leaving the train．
Thanks to the underground's idea，passengers can discover new stories every time they take a ride．In this way，the journey will not be boring any longer，and passengers will not complain about the journey either．Instead，they can benefit（受益）a lot from it．
Reading e﹣books can really make the journey more enjoyable﹣it's one of the things that successful passengers usually do．In fact，in this kind of special library，the books can go on forever！
56．How do passengers usually feel about their journeys to and from work？
A．Comfortable． B．Enjoyable． C．Painful． D．Cheerful．
57．Which statement is TRUE about passengers in paragraph 3？
A．They read paper books on the train． B．They can browse the QR code to buy the books．
C．They can scan the QR code to buy the books． D．They can enjoy the book on the app after the ride．
58．What does "it" refer to in the paragraph 4？
A．The journey． B．The story． C．The passenger． D．The underground．
59．Which is the best title for the passage？
A．The Best Train Ride． B．The Enjoyable Journey．
C．The Future Library． D．The Moving Library．
（2020·广东省中考真题）
It is necessary for students to learn some team skills like developing relationships, communicating well with others and solving problems. Here are two fun team activities.



Activity 1: Water Relay (接力赛)
Tools
● Two large buckets (水桶) to hold water
● One small bucket for each team member
Instructions
● Fill one large bucket with water.
● Make holes in the bottom of the small buckets.
● Have the team members line up between the two large buckets.
● Pass the water from one large bucket to the other, using small buckets. Try to keep as much water as possible.
Why It’s Fun
● It’s fun to workout away to lose as little water as possible.
● It’s water. Isn’t it fun to get you wet on a hot summer day?

Activity 2: Truth and Lie
This activity will allow team members to learn about each other.
Instructions
● Have each team member think of three pieces of information about themselves, and one of them is a lie.
● Each team member tells the group all the three pieces of information. Let the other team members guess which is the lie.
Why It’s Fun
● Students love talking about themselves and this gives them the chance to do so.
● Members can learn about each other.
● Members will be surprised at what others think of them.
60．How many team skills does the writer mention (提及) in Paragraph 1?
A．One. B．Two. C．Three. D．Four.
61．What tools are needed for each team in Water Relay?
A．One large bucket for each member.
B．Two large buckets for each member.
C．One small bucket for each member and two large buckets.
D．Two small buckets for each member and one large bucket.
62．In order to win Water Relay, the team members should ________.
A．get themselves wet B．lose as little water as possible
C．pass the water as slowly as possible D．pass the large bucket to the other team
63．It is fun to play Truth and Lie because team members can ________.
A．talk about themselves B．share love with each other
C．tell lies to surprise others D．learn all the information about others
64．This passage is most probably from ________.
A．a science book B．a travel guide
C．a news website D．a school magazine
（2020·广东省中考真题）
Once there were many thousands of Gourma Desert (沙漠) elephants in Mali, a country in West Africa. Now, there are fewer than four hundred.
Why did the number of the elephants drop so quickly? On the one hand, the elephants’ main lake, their only water source (来源), dried up. On the other hand, the land which the elephants lived on was overused by humans.
To protect the elephants’ living environment, the Mali Elephant Project (MEP) was started in 2007. MEP met with local people and helped them make rules of using land and water. As a result, the situation became better and there was more food, forest and grassland.
However, from 2012 to 2016, poaching (偷猎) and illegal trade in the elephants increased rapidly. Eighty-three elephants were lost in 2015 alone, and another fifty-one elephant were killed in 2016. “If this situation goes on, all the Gourma elephants will be killed by 2020,” said a member of MEP.
Luckily, the voice of MEP was heard. More organizations (组织) have joined together to educate the local people that trading elephants is against the law. Elephant poaching has dropped to a very low level. The local people have learned to live peacefully with the elephants, one of the wildlife treasures in the world.
65．MEP was started to ________.
A．raise more elephants in Mali B．stop the main lake from drying up
C．discover water source for elephants D．protect the elephants’ living environment
66．What does the word “illegal” in Paragraph 4 mean in Chinese?
A．公平的 B．亏损的 C．非法的 D．合理的
67．Eighty-three elephants were lost ________.
A．in 2012 B．in 2015 C．in 2016 D．in 2020
68．We can learn from the last paragraph that ________.
A．the number of organizations has dropped B．there is much less elephant poaching now
C．the local people keep the elephants at home D．the whole world live peacefully with elephants
69．This passage is mainly about ________.
A．the rules of using land and water B．the education of the local people
C．the work of Mali Elephant Project D．the situation of Gourma Desert elephants
（2020·广东广州中考真题）
Five interesting sports
Our most unusual sports from around the world
Every country has a national sport and some popular sports are now played across the world, However, in most countries, people also play unusual sports, with strange or interesting rules. Here are our top five unusual sports from around the planet.
Man vs. Horse Marathon
This race takes place in a small town in Wales, about 200 miles from London. It’s called a marathon (马拉松),but it's actually 35.4km, not 42.2km like a usual marathon.People race against horses across the hills and mountains.It started in 1981, but a human did not win until 2004.
Camel Wrestling
In Turkey, camel（骆驼）wrestling is a very old sport. The largest camel wrestling competition takes place every year and thousands of people come. In the sport, two camels fight against each other. Sometimes the camels do not want to fight and they run through the crowds, which can be dangerous.
Dragon Boat Racing
Every year in China, thousands of people watch dragon boat races. A dragon boat is a traditional Chinese boat with a painted dragon's head on one end. There can be up to 36 people or more racing in each boat in the water. Dragon boat racing is also popular in some other Asian countries.
Caber Toss
In this sport, players compete to throw a large piece of wood called a caber as far as they can. There is no rule about the size of the caber, but it’s usually the size of a small tree. It’s an ancient Scottish sport. Visitors to the UK can check it out.
Chess Boxing
A good chess boxer needs to be both strong and smart. Players play a round of chess, followed by a round of boxing. There are eleven rounds in total. Chess boxing was invented in 1992 by an English comic book writer. The sport is more popular in England and Germany.
70．What can we learn about Man vs. Horse Marathon?
A．it is an outdoor sport. B．It first appeared 16 years ago.
C．No human has ever won the game. D．It follows the rules of a usual marathon.
71．Which of the following is mentioned about Camel Wrestling?
A．It should be stopped. B．It’s worth seeing.
C．It s unfair to the animals. D．It’s sometimes dangerous to watch.
72．Which picture best describes Caber Toss?
A． B． C． D．
73．Which sport is popular in Asia?
A．Man vs. Horse Marathon. B．Dragon Boat Racing.
C．Caber Toss. D．Chess Boxing.
74．How many sports have animals as players?
A．1 B．2. C．3. D．4.
（2020·广东深圳中考真题）
What will astronauts（宇航员）eat when a space trip takes years?
“Lots of fresh vegetables,” says Dr. Janet Williams, whose team have spent the last 10 years learning how to grow plants in a space station. And it’s a good thing that she has already started her work, because space gardening can be really hard.
As usual, astronaut George White looked into the closed plant room. He had planted Dr. Williams’s quick-growing seedlings in it, but none of the stems were showing. He opened the room to check and found the problem. The stems weren’t growing upward and the roots weren't growing downward. On Earth, gravity（重力）helps a plant’s stems and roots to find “up”and “down”. However, in the space station, there was almost no gravity.
Dr. Williams suggested a solution: give the plants more light, as plants also use sunlight to find their way. And it worked. When the plants had more light, the stems turned up and the roots went down.
Now Dr. Williams was free to worry about the next problem:Would her baby plants live to flower? Can we grow food on a space journey?
Many plants died in the space station. Dr. Williams thought she knew why: the space plants were hungry for air. Plants live by taking up CO2 from the air. Since a plant uses it up in the air around, the plant needs moving air to bring more CO2 close to its surface! On Earth, the air is always moving. Gravity pulls down cold air, and warm air rises. And with these air movements, plants get enough CO2.
Many earlier experiments with plants in space had used closed rooms.Dr. Williams tried a new greenhouse that had a fan to keep the air move. The plants loved it. They flowered and even produced more seeds. Using Dr. Williams's method, astronaut George completed the first seed-to-seed experiment in space, and moved one plant closer to a garden in space.
“And this,” says Dr.Williams, “is good news for long-term space travel.”
75．Why have Dr. Williams’s team tried to grow plants in space?
A．To produce fresh air for astronauts.
B．To help astronauts relax themselves.
C．To provide food for long space journeys.
D．To make the space garden more beautiful.
76．How did light help solve the problem mentioned in Paragraph 3?
A．It caused the gravity to change.
B．It encouraged the plants to grow faster.
C．It helped the plants to grow in the right direction.
D．It showed the astronauts where to plant vegetables.
77．Why did many plants die in the space station?
A．The light was too strong. B．There was too much CO2.
C．There was not enough room to grow. D．The air condition was not good enough.
78．The underlined word “it” in Paragraph 7 refers to________.
A．the moving air B．the closed room C．the space journey D．the space garden
79．What can we learn about Dr. Williams’s team from the passage?

A．They mainly live on fresh vegetables.
B．They have successfully built a space garden.
C．They invented a special fan for their greenhouse.
D．They have worked on space gardening for many years.
（2020·广东深圳市·中考真题）
The Taojinshan Greenway (绿道) in Shenzhen has been open to citizens since July, 2019.Sitting at the west side of Shenzhen Reservoir, it is as long as 7.07 kilometers.
With plants along both sides and lakes lying at different sites, tourists can enjoy wonderful scenery all the way. If they are tired, they are free to take a rest at the 3 stops that were built for breaks. Additionally, five unused guard posts (岗亭) along the old route have remained. They serve as sightseeing platforms for visitors to feel the cultural spirit behind the place.
Of all its 13 scenic spots, 8 were designed to have AI helpers. From them, visitors can gain information on parking, tour guide services and more. The smart greenway, with free Wi-Fi available, also provides environmental date, such as temperature, wind speed and air quality. What's more, it can give visitors warnings of coming extreme ( 极端的) weather and natural disasters, including rainstorms and typhoons that may hit Shenzhen.
"Started in the middle of 2015,the building process of the Taojinshan Greenway has taken good care of the wildlife and environment nearby" said Yang Shiming, an official in charge of the project.
The greenway is an example of construction projects without doing ham to the nature. It also shows the role that technology plays in building a smart greenway for more life convenience."
80．How long did it take to finish the Taojinshan Greenway?
A．About 3 years B．About 4 years. C．About 5 years D．About 6 years.
81．What does the underlined word "They" in Paragraph 2 refer to?
A．Views. B．Visitors. C．Stops. D．Guard posts.
82．What is the main idea of Paragraph 3?
A．What AI helpers do. B．Technology changes life.
C．How AI helpers work. D．Technology protects humans.
83．What can we learn from this passage?
A．It is interesting to use AI helpers.
B．It is important to build greenways.
C．It is possible to balance nature and construction.
D．It is unnecessary to worry about terrible weather.
（2021·广东深圳市·中考真题）
Can plants talk? Modern research has found something amazing: they do communicate with each other.
It has been known for some time that plants use chemicals to conunicate with each other. This happens when a plant gets atacked by insects. The plant gives out chemicals from the leaves that are being eaten. This is like a warning, or a call for help: “I’m being attacked!” When another plant gets the chemicals, it starts to give out its own, different chemicals. Some of these chemicals drive insects away. Others attract the wasps（黄蜂; 蜜蜂）! The wasps kill the insects that are eating the plants. Scientists hope to learn more about this plant warning system, so that we can use it to grow more crops.
More surprisingly, plants also use sound to communicate. People can’t hear these sounds; but plants are making them. Some plants make noises with their roots. Com and chili plants do this. Some trees make clicking noises when there is not enough water.
Most surprisingly of all, plants have an amazing system of communication that can link nearly every plant in a forest. Scientists call this system the “wood wide web” . The wood wide web is linked underground by fungi（霉菌）. It links the roots of different plants to each other. It is in some ways similar to the Internet we use. Using the wood wide web, plants can share information and even food with each other. However, it may lead to bad effects. Plants may use it to steal food from each other, or spread chemicals to attack other plants. Perhaps one day scientists will learn how to create a “firewall” to help prevent these attacks within the wood wide web.
Scientists are learning more every day about the secret ways in which plants talk to each other. Maybe one day we will know enough about plant communication to be able to “talk” with them ourselves.
84．What will plants do when they are attacked by insects?
A．They will kill the insects by themselves.
B．They will control the wasps to kill the insects.
C．They will send out signals to ask for help.
D．They will produce chemicals as a warning or a call for help.
85．How are the wood wide web linked by fungi?
A．By making noises with their roots.
B．By connecting the roots of different plants to each other.
C．By sharing food and information with each other.
D．By spreading chemicals to each other.
86．What is the writer’s intention of the last paragraph?
A．To give people hope for further studies.
B．To praise scientists for their great achievements.
C．To call on people to protect the plants on Earth.
D．To inspire people to communicate with plants.
87．What is the structure of the passage?
A． B．
C． D．
88．Which is the best title for the passage?
A．The Secret Language of Plants B．The Study about the Plant Warning System
C．The Plants that Give Warnings D．Why Scientists Do Research about Plants
（2021·广东中考真题）
Welcome to Manor Farm U-pick Activities.

We are known for our delicious strawberries. We invite you to visit the farm and enjoy our fresh products and great forming experiences. We’ll try our best to create a safe open-air environment for our customers under the circumstances (情况) of COVID-19 this year. Please read the instructions below.
To pick the strawberries, you need to make a reservation (预约) on our website. Reservations are open from 13:00 to 20:00 the day before the picking day.
Please don’t come to the farm if you are sick.
On the farm, you need to stay at least two meters away from anyone you don’t live with.
For safety, you must use our new baskets only. A basket alone costs 5 yuan. It holds about 2kg of strawberries and a basket of strawberries is priced at 50 yuan in total.
If children come, they MUST stay close to their parents. Running up and down the strawberry rows will NOT be allowed. Our workers will tell them where to start picking and the children should listen. We hope children will follow our safety rules in our fields.
No pets are allowed on the farm.
Any questions, please call us at 906-256-523.
89．If you go to the farm on August 8th, you can make a reservation at ________.
A．10:00 on August 6th B．10:00 on August 7th
C．14:00 on August 6th D．14:00 on August 7th
90．The farm provides new baskets ________.
A．to cut down the cost B．to protect the environment
C．to keep customers safe D．to carry more strawberries
91．On the farm, children are asked to ________.
A．plant some strawberries B．run along the rows
C．stay close to their parents D．look after their pets
92．For more information, you can ________.
A．write an email B．make a phone call
C．send a voice message D．watch news on TV
93．The instructions are most probably from ________.
A．a farm owner B．a teacher C．a news reporter D．a customer
（2021·广东中考真题）
According to a research more than 130 billion pounds of uneaten food go to waste in Laura’s country each year. That is about 30% of the yearly food supply (供应). It is a sad fact especially when you consider how many families and homeless people are in hunger.
When Laura saw her school dining hall throw away food that was not eaten at all every day, she came up with an idea. She started a project to help her school dining hall to give away uneaten food to homeless shelters (庇护所) in her community. In the past three years, the same project has spread to other schools and some fast food restaurants throughout the city. The project is called Feed& find, and has already fed thousands of people in her city.
How does it work? Through an app, Feed& Find matches local homeless shelters with school dining halls and restaurants that have uneaten food to provide. When dining halls or restaurants have uneaten food left, they can use the app to share the information about the food. A truck driver working for the project is then sent to pick it up and take it to a shelter.
Pretty cool, right? It’s not surprising that people in other cities have got in touch with Laura hoping that she could have develop similar projects for their communities.
Some people, however, have concerns about the safety of the uneaten food. They think such food may not be clean enough. Still, this project is a clever way to help solve the problem of food waste and it helps those in need.
94．The numbers in paragraph 1 tell us ________.
A．some people are poor B．food waste is serious
C．the population is large D．the research is interesting
95．Laura’s project first got food from ________.
A．her school dining hall B．her family
C．a fast food restaurant D．homeless shelter
96．People in other cities would like Laura to ________.
A．find a truck driver B．visit their communities
C．give away food to them D．help develop projects like hers
97．The underlined words “concerns” in this passage means ________.
A．ways B．secrets C．worries D．decisions
98．Which can be the best title for this passage?
A．A Dining Guide App B．A Food Sharing Project
C．A Driving Service APF D．A Food Safety Project
There's much to see under the sea, but you need to remember that light behaves differently in water than in air. The objects appear closer to you than they exactly are. You might find yourself reaching out to touch something and completely missing it.
Objects under water will appear larger than they would on the surface, too. Be careful not to tell any stories about the big fish that got away. That fish might not be so big after all! It's just because sometimes things can seem to be as much as about 33 percent bigger in water!
What's more, in deeper water, colors just don't seem as bright. In fact, it looks as if some colors are missing. Remember the color of an object results from the wavelengths（波长）of light that are reflected（反射）from its surface. And light is taken in as it moves down through the water.
Swimmers wear wet suits to keep warm underwater. Let's take a bright red, yellow, and blue wet suit as an example. These colors are hard to miss on the surface of water. Watch carefully the changes in color as you descend in the water. The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part. Even at a place of about 6 to 9 meters underwater, you will look terrible, like a ghost（鬼怪）! And you have to wait for your return to the surface to enjoy the bright colors again!
61．You miss the object underwater when you want to touch it because .
A．your eyesight is quite poor B．you are not quick enough
C．it is not as close as it seems D．it disappears very quickly
62．The example of the wet suit is used to explain the change of of an object underwater.
A．the size B．the color C．the position D．the weight
63．The underlined word “descend” probably means in Chinese in this passage.
A．上升 B．漂浮 C．屏息 D．下潜
64．Which of the following is TRUE?
A．A four-meter-long fish looks three meters long underwater.
B．The wavelengths of red light are longer than those of blue light.
C．Much water will be taken in by the swimmer deep in the water.
D．You will see a ghost if you go as deep as 6 to 9 meters into the sea.
65．The best title of this passage is .
A．The Standard of Color Underwater B．The Direction of Light Underwater
C．The Brightness of Color Underwater D．The Behavior of Light Underwater
Experts believe that there are more than 8 million restaurants in the world today. So it might surprise you to learn that restaurants, as we know them, have only existed for a few centuries. Before 1765, there were no restaurants. That is, there were no places that provided the restaurant experience. There was nowhere in which a waiter brought you food and drink that you picked from a menu. In fact, there were no menus anywhere.
There were eating places travellers could go to centuries before that. The countryside was full of inns that would serve food. And there were taverns where one could get drinks. The rich could also eat special meals prepared by private cooks. But none of them could be called a “restaurant”.
A man called Boulanger changed that. In 1765, he opened a place in Paris that sold soups(汤). On his sign he used the word "restaurant" to describe what he was selling. At that time, soups were considered something that could help "restore"(恢复)your health — in French the word "restore" is “restaurer” — so he called the soups "restaurants". Soon, people started buying Boulanger's soups even when they were not ill. And over time, people began to use the word "restaurant" to refer to a place selling soup rather than the soup itself. More "restaurants" opened in France, and people began to buy soups more often.
Later, restaurants in Paris began to serve other food besides soup. In the 1790s, menus started to appear. By the mid-1800s, there were many types of restaurants throughout the world. The United States offered coffee shops. Tea houses became popular throughout China. Paris created   beautiful restaurants for the rich. The British began to copy the French, and the restaurant idea spread throughout the British Empire.
Today cities are filled with all types of restaurants. Diners have millions of options from which to choose.
31．What is the passage mainly about?
A．How restaurants developed.
B．What made a good restaurant.
C．Who created the first restaurant.
D．Why restaurants became popular.
32．According to the first paragraph, what made restaurants different from earlier eating places?
A．Restaurants only served food.
B．Restaurants were more expensive.
C．Restaurants were mainly in cities.
D．Restaurants had a list of meal choices.
33．Who did Boulanger expect to come and eat at his restaurant?
A．Rich people. B．Sick people. C．Travellers. D．Workers.
34．When it was first used. what did the word "restaurant" refer to?
A．A person. B．A place. C．Illness. D．Soup.
35．When did restaurants begin to grow internationally?
A．In the 1600s. B．In the 1700s. C．In the 1800s. D．In the 1900s.
When you go on a vacation, the hotel you choose and the room you stay in are important. There are many cool theme （主题）hotel rooms around the world. Here are some of them.
The Harry Potter Room
The George Castle Hotel in England gives its guests the experience of staying in Harry Potter’s world. This 19th century castle hotel is beside Harry Potter tour bus stop. The bus will take you to the Making of Harry Potter studio tour.
Ice Theme Room
An ice theme can be found at Hotel de Glace in Canada. In winter, you can get a fireplace and a private spa in the rooms.
The ice hotel has new rooms each year. This winter, it will build a room with the theme of Disney’s movie Frozen.
Pirate（海盗）Theme Room
If you want a more attractive theme room, the Adventure Island Hotel in America is the best choice. In their pirate theme rooms, you’ll feel like you’re on a pirate ship in a world of sea adventures.
Night at the Movie Room
At the Wensley Hotel in Australia, guests are crazy about the Night at the Movies Room. There they can see different things of Hollywood, such as Hollywood signs over the door, and hand-painted actors’ pictures above the bed.
26．What can guests do during their stay at the George Castle Hotel?
A．Visit a movie studio. B．Have a private spa. C．Enjoy a movie night. D．Play an adventure game.
27．Who is most likely to choose the Adventure Island Hotel?
A．Kids who love Disneyland. B．Kids who love pirate stories.
C．Adults who love castle tours. D．Adults who love watching movies.
28．What is the possible choice for a super fan of Hollywood movies?
A．The Wensley Hotel. B．Hotel de Glace. C．The George Castle Hotel. D．The Adventure Island Hotel.
29．Where is the text probably taken from?
A．A storybook. B．A history book. C．A science book. D．A travel guide book.
Shenzhen, Jan 1st, 2018-Shenzhen has become the world’s first city to make all its public buses, about 16,359, run on electricity. A total of 12,518 taxis, or 62. 5 percent of all the taxis in the city are electric ones. “We will replace（替换）the rest of the taxis with electric ones by 2020,” said Mr. Chen from the government.
“I have been a driver for twenty years,” said Mr. Zhang, a driver who started to drive e-buses a month ago. “We had several rounds of training and passed strict exams before we were allowed to drive the e-buses.”
The city has built 8,000 charging poles（充电柱）and 501 bus charging stations. “A bus can be fully charged within two hours and the charging poles can serve 300 buses a day at our station. Since the replacement, the bus terminal has become quiet, even as the e-buses are entering and exiting the station,” said Mr. Guan, the manager of Qinghu Bus Station.
The use of e-buses and e-taxis plays an important role in improving air quality. In a year, the e-buses use 72.9 percent less energy than the traditional ones. The e-taxis will save the energy of 119,000 tons of standard coal.
Shenzhen was one of the first 13 cities to take part in the National New-energy Vehicle Program（NNVP）. In 2017, the city spent 3.3 billion yuan on e-buses and the charging equipment. The city also encourages people to buy new-energy cars or e-cars by reducing their payment.
38．How many e-taxis were there in Shenzhen in January, 2018?
A．8,000 B．12,518 C．16, 359 D．11,900
39．What is the influence of the replacement according to Mr. Guan?
A．It saves 72. 9 percent energy. B．It helps to improve air quality.
C．The bus station has become quiet. D．People will pay more if they buy e-cars.
40．What can we infer（推断）from the passage?
A．It is not easy to be an e-driver. B．Shenzhen is the first to use e-taxis.
C．13 cities are in the NNVP besides Shenzhen. D．There are 300 charging poles at each bus station.
41．What is the main idea of the passage?
A．E-buses and e-taxis can save more energy in Shenzhen.
B．Shenzhen took part in the National New-energy Vehicle Program.
C．It is fast and convenient for the e-buses to be changed in Shenzhen.
D．Shenzhen is replacing its public buses and taxis with electric ones.
Artificial intelligence(人工智能), or AI in short, is the science of giving computers and machines ability to think and work like humans. AI scientists and engineers have made a lot of cool technologies.
AI is rapidly catching up with the human ability to read faces. As a result, facial recognition(识别) is used a lot in the world. Chinese police use this technology to identify criminals(罪犯). Once they caught a criminal when he attended a concert. It also checks the ID of ride-hailing(网约车) drivers and lets people pay for things with a smile.
AI is also used in self-driving cars, which are believed to be the future of driving. Most drivers may wave or nod at passers-by to let them cross the street, but self-driving cars don't have this ability. Carmakers are testing a light signal system to help them "speak" to humans. The system can show what self-driving cars will do. For example, if a driverless car is yielding(让路), it will flash two white lights side to side. A rapidly flashing light tells passers-by that the car is about to speed up.
Service Robots also show you how powerful AI is. Imagine this—you come back home from school and your robot housekeeper is waiting for you at the door. After dinner, he teaches you to play the piano, just like a real music teacher. Such thoughts will soon happen in the real world. In the future, more and more service robots will become good home helpers.
AI is so powerful that it can help human beings and even replace us in many jobs.
42．What does the underlined word "identify" in Paragraph 2 probably mean?
A．To let somebody know his mistakes. B．To come to realize and tell who is who.
C．To take somebody to the police station. D．To inform somebody of something important.
43．According to the passage, what is facial recognition used for?
A．Driving cars. B．Making people smile.
C．Calling the police. D．Checking people's information.
44．Which technology has been used in real life according to the passage?
A．Service Robots at school. B．Robots as ride-hailing drivers.
C．Facial recognition for payment. D．Light signals for self-driving cars.
45．What can we learn from the passage?
A．People use AI in many different ways. B．AI will take the place of human beings in all jobs.
C．Self-driving cars will be able to talk like humans. D．A criminal was caught for inventing facial recognition.
（2022·广东·华南师大附中三模）It seems like technology is everywhere. Computers and smart phones are at the centre of almost everything we do. They constantly require our attention. We text our friends with them during the day. Sleep with them by our beds and check our messages as soon as we wake up.
In the future, technology will no longer be interrupting us all the time, we will use calm technology which was first developed by scientist Mark Weiser in the 1970s. In his opinion, calm technology works quietly but constantly. We know it is there, but we don’t pay much attention to it. According to Mark, the best technology should be invisible and let you live your life. We already use many different types of calm technology in our everyday lives. Do you have a smoke alarm in your houses? That smoke alarm is always there, checking the air for smoke and quietly keeping you safe. It only reminds you it is there when you’ve burnt your bread! Or there may be lights in your home or school. When somebody passes in front of their sensors(感应器), the lights turn on. You don’t think about this type of technology until you see the light go on.
In the future, we can imagine our houses will use calm technology to open the curtains for us in the morning, to turn down the heat when we leave, or even to choose the best music for our moods. The minute we walk through the door, our house will respond by turning on the lights and music, and perhaps even starting to prepare our dinner!
31．Which of the following is an example of calm technology?
A．A computer. B．A smart phone. C．A smoke alarm. D．A radio.
32．What does the underlined word “interrupting” mean?
A．Hurting. B．Protecting. C．Helping. D．Troubling.
33．What’s the main idea of the third paragraph?
A．Calm technology keeps us safe in many ways.
B．Calm technology are useful in our daily lives.
C．Calm technology has been used in our daily lives.
D．Calm technology plays an important part in schools.
34．What can we learn from the passage?
A．The light won’t go on unless we touch the sensor.
B．Calm technology will make our life more convenient.
C．People will depend more on smart phones in the future.
D．People won’t have to work because of calm technology.
（2022·广东清远·二模）For almost 100 years, the Winter Olympics have been a celebration for snow and ice sports around the world. The special event only happens once every four years.
Although the Winter Olympics started with just four sports in France in 1924, they have grown to include seven sports. They have been hosted in 12 countries across three continents. In 2022, for the first time in the history, Beijing becomes the first city to host both the Summer and Winter Olympics. China has got many achievements since it took part in the Winter Olympics for the first time in 1980. In this short time, China’s sports players have won many medals in the event. They are quite good at short track speed skating (短道速滑).
China’s love for winter sports has been growing. Our country has planned to build 5, 000 special schools by 2025 to improve winter sports education. Primary and high schools will add winter sports to their subjects. Many provinces and cities have already acted. Classes will be set up in schools in northern China to improve interest in winter sports. In southern China, schools can work with winter sports clubs. Beijing has already set a good example. Nearly 840, 000 students in the city has begun taking winter sports lessons, including skating and skiing lessons.
35．How often does the Winter Olympics happen?
A．Once a year. B．Twice a year.
C．Once every two years. D．Once every four years.
36．When does Beijing become the first city to host both the Summer and Winter Olympics?
A．In 2022. B．In 2025. C．In 2030. D．In 2050.
37．What does the word “medals” in Paragraph 3 mean in English?
A．Honour B．Chances C．Awards D．Projects
38．Which of the following is TRUE according to the passage?
A．The Winter Olympics started with just five sports in Greece in 1924.
B．China has built 5, 000 special schools in 2020 to improve winter sports education.
C．China’s love for winter sports has been growing.
D．840, 000 students in the city has begun taking winter sports lessons.
39．The passage is mainly about ________.
A．the history of the Winter Olympics
B．both the Summer and Winter Olympics are held in China
C．the achievements of Greece in the Winter Olympics
D．the Winter Olympics and winter sports in China
（2022·广东·珠海市文园中学三模）Ever since the 19th century, people’s search for improved ways of producing electricity has never stopped. Now a UK company has developed a new kind of floor. It is very special. There is a system that can produce a certain amount of electricity very cheaply using the energy from footsteps. That is to say, every time people step on this special floor, electricity is produced.
The inventor of the floor came up with the idea when he was a student and worked in an energy business. The business asked him to find ways to power up street lights in the city center using the energy from the sun, but it soon became clear that this might not work because many city centers didn’t get enough sunlight because of tall buildings. Then he thought of a better plan.
Why not use the energy produced by people who walk past the street instead? The right technology could be used to convert this energy into electricity right under people’s feet.
The floor could actually be very efficient (效率高的). This is especially true when it is used in very busy areas. And the reason is that a lot of energy is produced simply because of large numbers of people walking across the floor. The floor can have other uses too, such as recording how many people visit a particular (特定的) place at particular times. This kind of information is very useful for certain people. For example, shop owners near the place would be interested in knowing what time of the day they have the highest customer numbers. The technology was created out of a hope of making energy that is untouchable closer to people. The business also said it tried to find a way for people to further their understanding of problems of climate change and sustainability (可持续性).
40．What is special about the new kind of floor?
A．It can be used in many busy areas in cities.
B．It depends on sunlight to produce electricity.
C．It can provide customers shopping information.
D．It produces electricity with the energy from footsteps.
41．Many city centers fail to get enough sunlight because ________.
A．the traffic is always busy B．the skies aren’t clear
C．the buildings are tall D．the environment is polluted
42．The underlined word “convert” probably means ________ in this passage.
A．carry B．change C．collect D．avoid
43．We can learn from the passage that ________.
A．it is really difficult to produce electricity by using sunlight
B．the use of the floor may help solve the problem of climate change
C．the more people walk on the floor, the more electricity can be produced
D．the floor could be of little help to the shop owners near the street using it
44．The best title for the passage is ________.
A．A Creative Business B．A Talented Inventor
C．A Discussion on Sunlight D．A New Way of Producing electricity
（2022·广东·东莞市东华初级中学三模）Why are some people just 1.5 meters tall, while others reach 2 meters? Studies have found that genes（基因）decide one’s height. There are about 4,000 genetic variants（变异体）that play a role. Each of them might make a person’s height less than 1 mm taller or shorter.
Now US scientists have found the most important genetic variant for deciding height so far. This genetic variant causes people to be shorter.
Each piece of this genetic variant can make a person’s height 2.2 cm lower more or less. If people have two pieces from their parents, they will be 4.4 cm shorter more or less.
These findings were developed from a study of Peruvians（秘鲁人）. They are known for being short. The average height of men is 1.65 meters, while women are 1.52 meters on average.
Scientists said only people with native American ancestry（血统）have this genetic variant. About 80 percent of the genes of a Peruvian come from this ancestry.
Scientists also found that Peruvians living by the sea have more of the genetic variant than those living in mountains or rainforests. This shows that height might also be affected（影响）by one’s environment.
One more question, why can’t we keep growing taller?
We grow taller because our bones grow. Bones increase in length because of the growth plates inside them. However, when we reach puberty（青春期）, the growth plates become fully grown. At the end of puberty, they stop growing. So we can’t grow taller any more.
45．According to Paragraph 1, we know that ________.
A．Nobody can grow over 2 meters
B．Each of us has about 4,000 genetic variants
C．About 4,000 genetic variants decide a person’s height
D．A person’s height is decided by a certain genetic variant
46．A person has three pieces of genetic variants from his parents, he might be ________ shorter.
A．2.2 cm B．4.4 cm C．6.6 cm D．8.8 cm
47．What does the underlined word “average” in Paragraph 4 mean in Chinese?
A．绝对的 B．平均的 C．异常的 D．特殊的
48．According to Paragraph 6, ________ might decide a person’s height.
A．ancestry B．lifestyle C．environment D．growth plates
49．What is the passage mainly about?
A．What causes us to be tall or short.
B．The latest studies of human genes.
C．Height differences around the world.
D．The average heights of native Americans.
Healthy Use of sunflower seeds
（2022·广东·东莞市东华初级中学三模）Sunflower seeds（向日葵籽）are so popular as snacks in China. You can see people having them while waiting for tables outside the restaurants or watching TV. In fact, this snack is very good for your health. Sunflower seeds are rich in vitamin E. The vitamin is an antioxidant（抗氧化剂）that helps you prevent cancer, heart disease, eye problems and possibly aging. Aging is a problem that most people care about. It not only brings lines on your skin, but also slows you down in thinking and actions.
However, do most of us get enough vitamin E from diet alone? No, surely we don’t get enough of the necessary food for body. Here is the advice that can help us know how to get vitamin E each day.
The benefit（好处）of seeds
       Different food contains（包含）different vitamins. Experts say people need 90 milligrams(mg) of vitamin E every day. The following table shows different amount of vitamin E in every 10 grams(g) of food.

How to serve
       Eat alone as a snack, on top of salads, in bread, and in vegetable dishes.
Even if you’re in perfect health—exercise regularly, keep less stress and eat a balanced diet, you can still benefit from vitamin E. But studies show that vitamin E may be less safe at very high intake, and may throw off the balance of other things in your body. So eat them more, but don’t too much.
50．Which vitamin do sunflower seeds have?
A．Vitamin B． B．Vitamin E. C．Vitamin A． D．Vitamin C．
51．What does the vitamin in sunflower seeds do?
a. It prevents cancer.
b. It protects people from heart disease.
c. It makes people’s eyes healthier.
d. It makes people’s skin darker.
A．abc B．abd C．acd D．bcd
52．To get enough vitamin E, how many grams of sunflower seeds should we eat every day?
A．10 g. B．20 g. C．30 g. D．40 g.
53．What is a good way to eat sunflower seeds?
A．Eat them with vegetables. B．Put them in water first.
C．Eat them along with other snacks. D．Cook them with milk.
54．We can probably read the passage from ______.
A．an adventure novel B．a travel guidebook
C．a health magazine D．a gardening website
（2022·广东中山·三模）As the development of modern technology, people tend to use all kinds of apps and gadgets to trace their health status because being a fit and healthy person is very important for them today. According to a survey, some people like running and exercising a lot that they become obsessed with (痴迷于) keeping track of it.
Due to the fitness apps and gadgets, people can measure every step they take, record the food they eat and calorie (卡路里) they burn. They might wear a special watch on the wrist, shoes on the feet or use different apps on their phones to measure their movements. Nowadays in China, we have this kind of stuff made by technology companies such as XiaoMi, HuaWei. Importantly, once they have done the exercises, they post it on social media so that all the friends can see what they have done in daily life. Is that familiar to you ?
Doctor Daniel Kraft from the United States makes gadgets for people like this. He told us that these people, known as “track-holies”, would become the norm in the future. And I think he is right. I can see the world of health and fitness changing around me every day. One of my friends, named Anna, is always using the latest fitness gadgets. Her favorite app called Xiao Mi health App. She uses it on her phone to measure her steps, heart rate and amount of calories she has burnt. She always posts these things and pictures of herself exercising on social media. “It is nice to know exactly how much exercise you have done, rather than guess”, she said. “That way I can keep pushing myself to improve.”
Also, my friends in China use We-chat to compare how many steps they have taken each day. They are very competitive about this!
55．People Like to use all kinds of apps to ________.
A．improve their work B．record their daily life
C．trace their health status D．share their advice about health
56．The second paragraph talks about ________.
A．how fitness apps and gadgets work
B．what fitness apps and gadgets can do
C．how fitness apps and gadgets affect social media
D．why people use fitness apps and gadgets on social media
57．Doctor Daniel Kraft that ________.
A．fewer people will use fitness gadgets B．more people will make fitness gadgets
C．fitness gadgets will become more popular D．fitness gadgets don’t help people keep fit
58．The underlined word gadgets probably means ________.
A．science B．tool C．service D．guide
59．The main idea of the passage is about ________.
A．the development of technology
B．a brief introduction of different kinds of apps
C．reasons why people use fitness apps and gadgets
D．using fitness apps and gadgets to trace people’s health status