广东省广州市黄埔区开元中学2022-2023学年八年级上学期期中英语试卷 (含答案)

这是一份广东省广州市黄埔区开元中学2022-2023学年八年级上学期期中英语试卷 (含答案)，共32页。试卷主要包含了阅读理解，写作等内容，欢迎下载使用。

2022-2023学年广东省广州市黄埔区开元中学八年级（上）期中英语试卷
一、语法选择 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从各题所给的A、B、C和D项中选出最佳选项，并在答题卡上将该项涂黑。
1．（15分）The Silk Road is the name of different roads that connected Europe，Africa and Asia long ago.It（1）　 　by Fvon Richthofen，who was（2）　 　famous German geographer.Scientists believe people began to travel the Silk Road about 3000 years ago and that people（3）　 　these different places along these roads.By the time the Chinese silk trade became important in the world，the Silk Road covered almost 7，000 kilometers.It went（4）　 　China to the West.
Businessmen travelled along the Silk Road to carry silk，of course.（5）　 　also carried and traded（6）　 　things like spices（香料），cloth，jewels and gold.
Along and around these ancient paths（小路），many fascinating（吸引人的） and mysterious stories happened.
It is said that Roman soldiers who（7）　 　a war travelled through central Asia.They decided（8）　 　somewhere near the ancient Chinese villagers.Some of these Romans （9）
　 　local Chinese women and the stories of the blond﹣haired，blue eyed tribes（部落） of China was started.
During its（10）　 　period，the Silk Road allowed people from many different cultures and countries（11）　 　each other and mix.The Silk Road allowed the sharing of valuable things and new ideas.It included people and trading goods from different areas.All these people travelled the Silk Road，（12）　 　they shared goods，stories，languages and cultures.
In modern times，the old Silk Road route（路线） are still used，but now they are crossed （13）　 　train instead of camels and horses.There （14）　 　even a Silk Route Museum in Jiuquan in China.It has over 35，000 objects from all along the Silk Road.（15）__　 　China protects the history of many countries and people.

（1）A.name
B.named
C.is named
D.was named
（2）A.a
B.an
C.the
D./
（3）A.reach
B.reached
C.was reached
D.was reaching
（4）A.for
B.from
C.in
D.since
（5）A.We
B.Our
C.They
D.Their
（6）A.other
B.others
C.another
D.the other
（7）A.lose
B.lost
C.to lose
D.losing
（8）A.live
B.living
C.to live
D.lived
（9）A.marry with
B.marry for
C.married
D.is married with
（10）A.the busiest
B.busy
C.busier
D.busiest
（11）A.meet
B.to meet
C.met
D.to meeting
（12）A.and
B.but
C.or
D.so
（13）A.on
B.in
C.by
D.through
（14）A.is
B.are
C.were
D.was
（15）A.On the way
B.By the way
C.In this way
D.To this way
二、完形填空 读下面短文，从短文后所给的A、B、C、D四个选项中选出能填入相应空白处的最佳选项，并在答题卡上将相应的字母编号涂黑。
2．（10分）Developing apps is not an easy thing，but some middle school students are inventing new apps.Recently，lots of middle school students（1）　 　an international competition in Shanghai，China.A group of middle school students from China showed their creative（2）_　 　 in the competition.
Lin Shao，a student from Shanghai，invented an app called Health Helper.His app is very useful.It can（3）　 　 people when and how to do exercise every day.By using this app，people can know their track（轨迹） of running as well as their health conditions.
Zhang Jichen，a Grade Nine student from Beijing，used to be troubled by the bad（4）　 　.So he invented an app that can calculate PM 2.5（5）　 　.To make people breathe fresh air，this app gives not only a lot of information about the weather but also some（6）　 　 about outdoor activities.
"It is（7）　 　to make an app.You have to be really careful and（8）　 　.Sometimes you have to（9）　 　 again and again.But I enjoy doing it，" said Yuqi，another student from Shanghai. "Many interesting apps leave a deep impression（印象）on the（10）　 　 from Google in the competition and we are waiting for their better performance in the future，" the news reporter said.

（1）A.took part in
B.handed in
C.came in
D.challenged to
（2）A.inventions
B.books
C.machines
D.papers
（3）A.ask
B.know
C.tell
D.answer
（4）A.vapour
B.air
C.oxygen
D.water
（5）A.easily
B.early
C.quietly
D.freely
（6）A.experience
B.advice
C.knowledge
D.difference
（7）A.interesting
B.surprising
C.important
D.difficult
（8）A.bored
B.pleased
C.tired
D.patient
（9）A.meet
B.introduce
C.try
D.watch
（10）A.actors
B.doctors
C.waiters
D.engineers
三、阅读理解（满分30分）
第一节、阅读短文，选出最佳选项。
3．（8分）Do you know your phone number well？Your number has 11 digits （数字）.You may sometimes find it hard to remember your number.That is because China has the longest mobile phone numbers in the world.Why is that？
The 11 digits include three parts.Each part has a different meaning.The first three numbers tell you the mobile phone service provider you are using.For example，135 is for the China Mobile Communication Corporation（中国移动） and 188 is for China Unicom（中国联通）.The fourth to the seventh digits tell you where the number is from.And the last four digits are random（随机的）.
The main reason for using 11 digits is that we have the largest population in the world.We once had 10 numbers.But as our population grew，there were not enough numbers for us to use.So we began to use 11 digits from 1999.
Eleven digits can make tens of billions of mobile phone numbers.That's enough for each person to have seven or eight phone numbers to use in China.Also，we can use the mobile phone numbers again.Usually，the service provider will use a canceled number again after three to six months.If you call a number that you haven't called for a long time，you may find its owner has changed.
Besides China，Britain and Japan also use 11﹣digit mobile phone numbers.But their numbers always start with 0.So they cannot make as many numbers as we can.Countries like the United States，Australia and India use phone numbers with 10 digits.Canada's mobile phone numbers are perhaps the world's shortest：they use seven digits.

（1）What can we learn from the mobile phone number 188﹣4792﹣8343？ 　 　
A.The service provider is the China Mobile Communication Corporation.
B.The digits 4792 tell you the area the mobile phone number is from.
C.There are ten digits in the mobile phone number.
D.The digits 8343 tell you the number of service providers in China.
（2）Why do we use 11﹣ digit mobile phone numbers in China？ 　 　
A.There are many people in China.
B.People in China can remember numbers well.
C.11 is a lucky number for Chinese people.
D.It helps people to remember more phone numbers.
（3）What does the underlined word " canceled " mean in Chinese？ 　 　
A.新型的.
B.已撤销的.
C.有用的.
D.特殊的.
（4）The writer wrote this passage mainly to tell us 　 　.
A.what the meaning of cellphone numbers is
B.why Chinese cellphone numbers have 11 digits
C.when the first cellphone number was created
D which country has the longest cellphone number
4．（6分）Many parents make their children do chores（家务） around the house.For some families，teaching children what to do and how to do chores is easy.But in other families，getting children to do some housework can be a very big problem.Here is a survey（调查） about this problem.We asked 4，000 teenagers in China several questions.Half of them come from big cities like Beijing，Shanghai and Guangzhou.The others are from small villages.We made a diagram of the result of our survey.Let's have a look at it.
Chores
2，000 teenagers in small villages
2，000 teenagers in big cities
Take out the trash（垃圾）
1，600
1，000
Sweep the floor
1，200
850
Make the bed
1，400
600
Do the dishes
1，100
1，500
Fold the clothes
900
750
We found that teenagers from small villages do more chores than those from big cities.Wesuggestthatparentsshouldgivetheirchildrensomechorestodo .Choresaregoodforchildren，evenveryyoungones.Doing chores can teach children many important skills like working together.Chores also teach children what is fair.The skills and value from doing chores will be good for children all their life.All family members must work together to make house clean，and each person must do his or her share（份） of the work.We can do this by starting a plan of chores and responsibilities（责任） when children are young.

（1）Half of the teenagers in big cities choose to 　 　.
A.take out the trash
B.do the dishes
C.make the bed
D.fold the clothes
（2）Which is TRUE according to the passage？ 　 　
A.Teenagers in big cities do more chores than those from small villages.
B.Teenagers in small villages do many chores because their parents don't love them.
C.The writer suggests parents should ask their children to do chores when they are old enough.
D.The writer thinks doing chores can help to develop children's skills and responsibilities.
（3）The passage may be from 　 　.
A.a diary
B.a newspaper
C.an advertisement
D.a story book
5．（8分）Computers are very important in people's lives.About fifteen years ago，computers were not popular，and many people didn't want to learn computer skills.A few years later，computers became part of human lives，and they make our lives easier and more convenient.
First of all，computers play an important part in companies.People run their businesses with the help of computers.People can store millions of important files（文件） in computers because they have a large memory.And now they can even hold and attend meetings online.
Secondly，computers can help people get more knowledge.Students can use them to learn about some information.One day，our teacher asked us to do a paper on a topic （话题）.I really didn't know much about this topic，so I used one of the computers in my school to look for information about it.Finally，I completed the homework well.
Thirdly，computers give us a lot of fun when we are down.We can watch movies and videos，listen to music，and play games on the computers，and then we may feel better.We can also read novels and books through e﹣books and have conversations with people through chat apps and emails.
Fourthly，computers make our lives easier.We can order our meals and read news online.We can also work from home with the help of a computer.

（1）Which of the following is TRUE according to paragraph 2？ 　 　
A.Businessman makes lots of money from selling computers.
B.Computers with a larger memory may store more documents.
C.Computers are becoming more important to business owners.
D.With computers，students can attend classes online.
（2）What does the third paragraph mainly tell us？ 　 　
A.Computers play an important part in companies.
B.Computers can help people to learn.
C.Computers help people communicate easily.
D.Computers are not allowed to use in some middle schools.
（3）Which of the following is NOT true according to the passage？ 　 　
A.Computers started to get popular around fifteen years ago.
B.Computers can help people run business.
C.Computers can be used to store millions of files.
D.We can talk with people through chat apps on the computer.
（4）What is the passage mainly about？ 　 　
A.When computers became popular with young people.
B.The importance of learning computer skills.
C.How computers help people live a better life.
D.How we can have fun with the computer.
6．（8分）Anna Du was walking along the beach when she noticed plastics（塑料） there.She reached down to pick them up，and quickly realized a problem：there are many more small pieces than she could deal with.It seems impossible to clean them all up.
Du，12 years old at that time，tried to solve the problem like a good scientist—first，by doing a little research.That's how she learned that eight million tons of plastics end up in the oceans every year.Then she got to build something that could help solve the problem，a remote operated vehicle（遥控潜水器），or ROV.Her ROV could move through﹣water﹣and find plastics on the ocean floor.
The cool part of Du's invention is its detection system.She uses a camera along with three different kinds of light to find the plastics.She also uses visible light to find unnatural colors that make the plastic stand out.
"She has a very good engineering sense to break down a problem like this，and then go after it，" says engineer Carsey Machado，"It sounds simple，but it's a level of thinking that's really amazing."
Du started attending public events and workshops at a university when she was five years old.That was how she picked up the engineering skills necessary to build her ROV.She says actually getting her ROV to move through water well was not easy.She failed many times，but she never gave up trying and testing.
When asked about her future plans，she mentioned wanting to address the effects of climate （气候） change."I think there are a lot of problems that could be solved with new inventions，"says Du.
Du thanks her parents who for years have taken her to student outreach activities，for supporting her interest in science，technology，engineering and math （STEM）.She says she has been able to meet students and scientists there."I know I want to be an engineer because I like building things to help solve big world problems." says Du，"but I'm not sure what kind of engineer I want to be yet."

（1）What does the underlined word it in paragraph one refer to？ 　 　
A.To notice plastics on the beach.
B.To reach down.
C.To quickly realize.
D.To clean up plastics.
（2）What can Du's ROV do？ 　 　
A.It can solve problems like any good scientist
B.It can move through water and find plastics on the ocean floor.
C.It can help people develop a good engineering sense.
D.It can break down plastics.
（3）How did Du get her ROV move through water successfully？ 　 　
A.By looking up information online.
B.By failing and trying again and again.
C.By asking her parents for help.
D.By attending workshops at a university
（4）Which of the following is NOT the reason that made Du succeed in building her ROV？ 　 　
A.Her good engineering sense.
B.Her persistence（not giving up）.
C.Her parents' support.
D.Help from some engineers.
第二节阅读填空（满分5分）阅读短文及文后A～E选项，选出可以填入各题空白处的最佳选项，并在答题卡上将该选项编号涂黑（选择E选项时，请在答题卡上同时填涂AC 选项）。
7．（5分）Since 2017，short videos have got millions of views online.Many people create and share short videos on popular video app like Douyin and Kuaishou.（1）　 　They show people doing activities like cooking，exercising and singing.
（2）　 　According to a report，more than 50 percent of Grade 7 and 8 students said they enjoy watching these short videos.About 47 percent of them have posted their own videos.
From the videos，teenagers see funny and exciting things they won't usually see.（3）　 　For example，a13﹣ year﹣ old user named Xiao Qianyu has posted videos showing her learning jazz dance.This has won her many fans.
（4）　 　Some students spend too much time watching them and not enough time studying.Some videos are not suitable for teenagers and have a negative effect on them.
To deal with this problem，Douyin added a new function（功能）.（5）　 　Also，the government asked companies to make stricter rules for these apps and take away the unsuitable videos.

A However，short video apps can also cause problems.
B.Most of the users on the apps are young people，including teenagers.
C.The videos are 15 seconds to a few minutes long.
D.Many teens also like to share the fun things they do with others.
E.It locks the app if someone uses the app for over two hours a day.
四、写作（共三节）
第一节语篇填词 阅读下面短文，根据其大意及所给单词的首字母写出所缺单词。在填写答卷时，要求写出完整单词。（每空限填一词）
8．（5分）School education is very important and （1）u　 　.Yet no one can learn everything at school and teachers can't teach their students everything they want to know.Their job is to show his students how to learn.He teaches them how to read and how to think.So the students can learn （2）m　 　more by themselves.
It is more important to know how to study by oneself.It's quite easy to learn something，but it's difficult to use it to solve problems.Great （3）i　 　do not get everything from school，but they still can invent many things to change the world a lot and make people live a（4）b 　 　life.
How can they do all of this？That's because they know how to study.A lot of things are not taught in the classroom.They get a lot of knowledge by reading outside school.They work hard and never （5）g　 　up all their lives.
第二节完成句子（共5题；每小题2分，满分10分）
9．（2分）我们应该保护那些濒危动物，不然它们很快就会灭绝．
We should protect the animals in danger，or they will　 　　 　soon．
10．（2分）你的成功取决于你的努力程度。
Your success　 　 how hard you work.
11．（2分）轮子可能是历史上最伟大的发明之一。
The wheel is perhaps 　 　　 　　 　　 　 inventions in history.
12．（2分）我的姐姐经常通过电子邮件与我们保持联系。
My elder sister often　 　　 　　 　　 　 us by e﹣mail.
13．（2分）格林家扔掉的玻璃和布朗家一样多。
The Greens throw away　 　　 　　 　　 　the Browns.
第三节书面表达（满分15分）
14．（15分）科学技术日新月异，新发明给人们的生活带来了很多便利。假如你家就有一台智能家用电器——扫地机器人，你的外国朋友对此很感兴趣，请你用英语写一篇短文，向朋友介绍你的机器人。短文需包括下表所有提示内容：
扫地机器人
外形
扫地机器人：圆形的底部有三个轮子
特点
自动清洁地板；使用电能，环保；可用手机控制
使用后的评价
（请补充两点）
注意：
（1）参考词汇：智能家用电器（smart appliance）、扫地机器人（robot cleaner）；
（2）词数：80词左右（短文的开头已给出，不计入词数）；
（3）不得透露班级、姓名等个人信息，否则不予评分。

Many inventions have changed people's life.My robot cleaner is one of them.

2022-2023学年广东省广州市黄埔区开元中学八年级（上）期中英语试卷
参考答案与试题解析
一、语法选择 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从各题所给的A、B、C和D项中选出最佳选项，并在答题卡上将该项涂黑。
1．（15分）The Silk Road is the name of different roads that connected Europe，Africa and Asia long ago.It（1）　D　by Fvon Richthofen，who was（2）　A　famous German geographer.Scientists believe people began to travel the Silk Road about 3000 years ago and that people（3）　B　these different places along these roads.By the time the Chinese silk trade became important in the world，the Silk Road covered almost 7，000 kilometers.It went（4）　B　China to the West.
Businessmen travelled along the Silk Road to carry silk，of course.（5）　C　also carried and traded（6）　A　things like spices（香料），cloth，jewels and gold.
Along and around these ancient paths（小路），many fascinating（吸引人的） and mysterious stories happened.
It is said that Roman soldiers who（7）　B　a war travelled through central Asia.They decided（8）　C　somewhere near the ancient Chinese villagers.Some of these Romans （9）　C　local Chinese women and the stories of the blond﹣haired，blue eyed tribes（部落） of China was started.
During its（10）　D　period，the Silk Road allowed people from many different cultures and countries（11）　B　each other and mix.The Silk Road allowed the sharing of valuable things and new ideas.It included people and trading goods from different areas.All these people travelled the Silk Road，（12）　A　they shared goods，stories，languages and cultures.
In modern times，the old Silk Road route（路线） are still used，but now they are crossed （13）　C　train instead of camels and horses.There （14）　A　even a Silk Route Museum in Jiuquan in China.It has over 35，000 objects from all along the Silk Road.（15）　C　China protects the history of many countries and people.

（1）A.name
B.named
C.is named
D.was named
（2）A.a
B.an
C.the
D./
（3）A.reach
B.reached
C.was reached
D.was reaching
（4）A.for
B.from
C.in
D.since
（5）A.We
B.Our
C.They
D.Their
（6）A.other
B.others
C.another
D.the other
（7）A.lose
B.lost
C.to lose
D.losing
（8）A.live
B.living
C.to live
D.lived
（9）A.marry with
B.marry for
C.married
D.is married with
（10）A.the busiest
B.busy
C.busier
D.busiest
（11）A.meet
B.to meet
C.met
D.to meeting
（12）A.and
B.but
C.or
D.so
（13）A.on
B.in
C.by
D.through
（14）A.is
B.are
C.were
D.was
（15）A.On the way
B.By the way
C.In this way
D.To this way
【考点】说明文；历史．版权所有
【分析】本文主要介绍了丝绸之路。
【解答】（1）动词辨析。A.name原形；B.named过去式；C.is named一般现在时的被动语态；D.was named一般过去时的被动语态。根据by Fvon Richthofen以及was可知，此处是一般过去时的被动语态。句意：它是由德国著名地理学家弗冯•李希霍芬命名的。故选D。
（2）冠词辨析。A.a一个（辅音音素前）；B.an一个（元音音素前）；C.the特指；D./零冠词。famous是辅音音素开头的单词，此处是泛指，表示"一个"用a。句意：它是由德国著名地理学家弗冯•李希霍芬命名的。故选A。
（3）动词辨析。A.reach原形；B.reached过去式；C.was reached一般过去时的被动语态；D.was reaching过去进行时。根据时间状语3000 years ago可知，为一般过去时；主语people和谓语reach之间是主动关系。句意：科学家们认为，人们大约在3000年前开始沿着丝绸之路旅行，并沿着这些道路到达这些不同的地方。故选B。
（4）介词辨析。A.for对于；B.from来自；C.in在......里面；D.since自从。from...to...从......到......，是固定搭配。句意：它从中国到西方。故选B。
（5）代词辨析。A.We我们；B.Our我们的；C.They他们；D.Their他们的。根据句意可知，此处用they代指上文Businessmen。句意：他们还携带和交易其它东西，如香料、布料、珠宝和黄金。故选C。
（6）形容词辨析。A.other其它的（后接名词复数）；B.others其它（＝other+名词复数）；C.another另一个（后接名词单数）；D.the other另一个（两者中）。根据things可知，符合"other+名词复数"的结构。句意：他们还携带和交易其它东西，如香料、布料、珠宝和黄金。故选A。
（7）动词辨析。A.lose原形；B.lost过去式；C.to lose不定式；D.losing现在分词或动名词。分析句子可知，此空作从句的谓语，排除选项CD；讲述过去发生的事情要用一般过去时。句意：据说，战败的罗马士兵经过中亚。故选B。
（8）动词辨析。A.live原形；B.living在分词或动名词；C.to live不定式；D.lived过去式。decide to do sth.决定做某事，是固定搭配。句意：他们决定住在中国古代村民附近的地方。故选C。
（9）动词辨析。A.marry with错误形式；B.marry for为......结婚；C.married结婚，娶（过去式）；D.is married with错误形式。根据local Chinese women（当地的中国女子）可知，是娶了中国女子。sb.marry sb.某人娶了某人。句意：这些罗马人中的一些人娶了当地的中国女子，中国金发碧眼部落的故事就这样开始了。故选C。
（10）形容词辨析。A.the busiest最忙碌的；B.busy忙碌的；C.busier更忙碌的；D.busiest最忙碌的。根据句意可知，在丝绸之路最忙碌的时期，最高级词前有形容词物主代词its，省去the。句意：在丝绸之路最繁忙的时期，来自不同文化和国家的人们得以相遇和融合。故选D。
（11）动词辨析。A.meet原形；B.to meet不定式；C.met过去式；D.to meeting介词和动名词。allow to sth.允许做某事，是固定搭配。句意：在丝绸之路最繁忙的时期，来自不同文化和国家的人们得以相遇和融合。故选B。
（12）连词辨析。A.and和；B.but但是；C.or或者；D.so所以。前句All these people travelled the Silk Road（所有这些人都走过丝绸之路）以及后句they shared goods，stories，languages and cultures.（他们分享货物、故事、语言和文化。）是并列关系，用and。句意：所有这些人都走过丝绸之路，他们分享商品、故事、语言和文化。故选A。
（13）介词辨析。A.on在......上面；B.in在......里面；C.by通过；D.through穿过（内部）。be crossed by被......穿过。句意：在现代，古老的丝绸之路仍在使用，但现在它们是通过火车而不是骆驼和马。故选C。
（14）动词辨析。A.is主语是单数，一般现在时；B.are主语是复数或第二人称，一般现在时；C.were主语是复数或第二人称，一般过去时；D.was主语是单数或第一人称I，一般过去时。主语a Silk Route Museum是单数，排除选项BC；描述的是客观事实，用一般现在时。句意：中国酒泉甚至还有丝绸之路博物馆。故选A。
（15）介词短语辨析。A.On the way在路上；B.By the way顺便问一下；C.In this way以这种方式；D.To this way往这边走。根据China protects the history of many countries and people.（中国保护着许多国家和人民的历史。）可知，是以这种方式。句意：以这种方式，中国保护了许多国家和人民的历史。故选C。
【点评】解答完形填空题需要快速阅读全文，了解文章大意，再带着选项去读，边读边做，注意联系上下文。
二、完形填空 读下面短文，从短文后所给的A、B、C、D四个选项中选出能填入相应空白处的最佳选项，并在答题卡上将相应的字母编号涂黑。
2．（10分）Developing apps is not an easy thing，but some middle school students are inventing new apps.Recently，lots of middle school students（1）　A　an international competition in Shanghai，China.A group of middle school students from China showed their creative（2）　A　 in the competition.
Lin Shao，a student from Shanghai，invented an app called Health Helper.His app is very useful.It can（3）　C　 people when and how to do exercise every day.By using this app，people can know their track（轨迹） of running as well as their health conditions.
Zhang Jichen，a Grade Nine student from Beijing，used to be troubled by the bad（4）　B　.So he invented an app that can calculate PM 2.5（5）　A　.To make people breathe fresh air，this app gives not only a lot of information about the weather but also some（6）　B　 about outdoor activities.
"It is（7）　D　to make an app.You have to be really careful and（8）　D　.Sometimes you have to（9）　C　 again and again.But I enjoy doing it，" said Yuqi，another student from Shanghai. "Many interesting apps leave a deep impression（印象）on the（10）　D　 from Google in the competition and we are waiting for their better performance in the future，" the news reporter said.

（1）A.took part in
B.handed in
C.came in
D.challenged to
（2）A.inventions
B.books
C.machines
D.papers
（3）A.ask
B.know
C.tell
D.answer
（4）A.vapour
B.air
C.oxygen
D.water
（5）A.easily
B.early
C.quietly
D.freely
（6）A.experience
B.advice
C.knowledge
D.difference
（7）A.interesting
B.surprising
C.important
D.difficult
（8）A.bored
B.pleased
C.tired
D.patient
（9）A.meet
B.introduce
C.try
D.watch
（10）A.actors
B.doctors
C.waiters
D.engineers
【考点】说明文．版权所有
【分析】文章介绍了在中国上海参加了一场国际App制作比赛的一些信息。
【解答】（1）A 动词及短语辨析。A参加，B上交，C进来，D挑战，根据an international competition应该是参加比赛，故答案是A。
（2）A 名词辨析。A发明，B书，C机器，D论文，根据上句参加比赛，应该是中国的中学生展示他们有创造力的发明，故答案是A。
（3）C 动词辨析。A询问，B知道，C告诉，D回答，根据后面when and how to do exercise every day应该是它能告诉人们每天锻炼的时间和方式，故答案是C。
（4）B 名词辨析。A蒸气，B空气，C氧气，D水，根据Zhang Jichen，a Grade Nine student from Beijing来自北京和常识，应该是被不好的空气所困扰，故答案是B。
（5）A 副词辨析。A容易地，B早地，C安静地，D自由地，根据上句被不好的空气所困扰，可知发明的App应该是轻易地测量出PM2.5的值，故答案是A。
（6）B 名词辨析。A经历，B建议，C知识，D不同，根据后面about outdoor activities.应该是这个应用也给出关于户外运动的建议，故答案是B。
（7）D 形容词辨析。A有趣的，B惊讶的，C重要的，D困难的，根据下文描述和常识，制作一个应用肯定是很难的，故答案是D。
（8）D 形容词辨析。A无聊的，B高兴的，C累的，D耐心的，根据上句制作一个应用肯定是很难的，可知你不得不去小心和耐心的准备，故答案是D。
（9）C 动词辨析。A遇见，B介绍，C尝试，D观看，根据Sometimes you have to（9）again and again.应该是不得不去一次又一次地尝试，故答案是C。
（10）D 名词辨析。A演员，B医生，C服务员，D工程师，根据Many interesting apps leave a deep impression（印象）on the（10）from Google in the competition应该是许多有趣的应用程序给参加比赛的谷歌工程师留下了深刻的印象，故答案是D。
【点评】考查完形填空。根据所给的短文对意思有所了解，然后根据短文的大体意思，选择每个符合题意的答案，使短文更通顺。
三、阅读理解（满分30分）
第一节、阅读短文，选出最佳选项。
3．（8分）Do you know your phone number well？Your number has 11 digits （数字）.You may sometimes find it hard to remember your number.That is because China has the longest mobile phone numbers in the world.Why is that？
The 11 digits include three parts.Each part has a different meaning.The first three numbers tell you the mobile phone service provider you are using.For example，135 is for the China Mobile Communication Corporation（中国移动） and 188 is for China Unicom（中国联通）.The fourth to the seventh digits tell you where the number is from.And the last four digits are random（随机的）.
The main reason for using 11 digits is that we have the largest population in the world.We once had 10 numbers.But as our population grew，there were not enough numbers for us to use.So we began to use 11 digits from 1999.
Eleven digits can make tens of billions of mobile phone numbers.That's enough for each person to have seven or eight phone numbers to use in China.Also，we can use the mobile phone numbers again.Usually，the service provider will use a canceled number again after three to six months.If you call a number that you haven't called for a long time，you may find its owner has changed.
Besides China，Britain and Japan also use 11﹣digit mobile phone numbers.But their numbers always start with 0.So they cannot make as many numbers as we can.Countries like the United States，Australia and India use phone numbers with 10 digits.Canada's mobile phone numbers are perhaps the world's shortest：they use seven digits.

（1）What can we learn from the mobile phone number 188﹣4792﹣8343？ 　B　
A.The service provider is the China Mobile Communication Corporation.
B.The digits 4792 tell you the area the mobile phone number is from.
C.There are ten digits in the mobile phone number.
D.The digits 8343 tell you the number of service providers in China.
（2）Why do we use 11﹣ digit mobile phone numbers in China？ 　A　
A.There are many people in China.
B.People in China can remember numbers well.
C.11 is a lucky number for Chinese people.
D.It helps people to remember more phone numbers.
（3）What does the underlined word " canceled " mean in Chinese？ 　B　
A.新型的.
B.已撤销的.
C.有用的.
D.特殊的.
（4）The writer wrote this passage mainly to tell us 　B　.
A.what the meaning of cellphone numbers is
B.why Chinese cellphone numbers have 11 digits
C.when the first cellphone number was created
D which country has the longest cellphone number
【考点】记叙文；互联通讯．版权所有
【分析】本文主要介绍了中国手机号码为什么是11位，并介了其他国家手机号码数字。
【解答】（1）细节理解题。根据原文.For example，135 is for the China Mobile Communication Corporation（中国移动） and 188 is for China Unicom（中国联通）.The fourth to the seventh digits tell you where the number is from.And the last four digits are random（随机的）.（例如，135是中国移动通信公司，188是中国联通。第四位数到第七位数告诉你这个数字来自哪里。最后四个数字是随机的。）可知第四到第七位数告诉你这个号码是来自哪里，最后四位数字是随机的。故答案为B。
（2）细节理解题。根据原文But as our population grew，there were not enough numbers for us to use.So we began to use 11 digits from 1999.（但随着人口的增长，没有足够的数字供我们使用。所以我们从1999年开始使用11位数字。）可知使用11位数字的主要原因是我们拥有世界上最多的人口。故答案为A。
（3）词句猜测题。根据第四段Also，we can use the mobile phone numbers again.Usually，the service provider will use a canceled number again after three to six months.If you calla number that you haven't called for a long time.you may find its owner has changed.（此外，我们可以再次使用手机号码。通常情况下，服务提供商会在3到6个月后再次使用已取消的号码。如果你拨打一个很久没打过的号码，你可能会发现它的主人变了。）可知如果你拨打一个你很长时间没有拨打的号码，你可能会发现它主人已经变了，由此推测此处是表示服务提供商会在三到六个月后重新使用被取消的号码，划线单词表示"已撤销的"，故选B。
（4）主旨大意题。通读全文，可知本文主要介绍了中国手机号码为什么是11位，并介了其他国家手机号码数字。故答案为B。
【点评】做这类题，要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项写出正确答案。
4．（6分）Many parents make their children do chores（家务） around the house.For some families，teaching children what to do and how to do chores is easy.But in other families，getting children to do some housework can be a very big problem.Here is a survey（调查） about this problem.We asked 4，000 teenagers in China several questions.Half of them come from big cities like Beijing，Shanghai and Guangzhou.The others are from small villages.We made a diagram of the result of our survey.Let's have a look at it.
Chores
2，000 teenagers in small villages
2，000 teenagers in big cities
Take out the trash（垃圾）
1，600
1，000
Sweep the floor
1，200
850
Make the bed
1，400
600
Do the dishes
1，100
1，500
Fold the clothes
900
750
We found that teenagers from small villages do more chores than those from big cities.Wesuggestthatparentsshouldgivetheirchildrensomechorestodo .Choresaregoodforchildren，evenveryyoungones.Doing chores can teach children many important skills like working together.Chores also teach children what is fair.The skills and value from doing chores will be good for children all their life.All family members must work together to make house clean，and each person must do his or her share（份） of the work.We can do this by starting a plan of chores and responsibilities（责任） when children are young.

（1）Half of the teenagers in big cities choose to 　A　.
A.take out the trash
B.do the dishes
C.make the bed
D.fold the clothes
（2）Which is TRUE according to the passage？ 　D　
A.Teenagers in big cities do more chores than those from small villages.
B.Teenagers in small villages do many chores because their parents don't love them.
C.The writer suggests parents should ask their children to do chores when they are old enough.
D.The writer thinks doing chores can help to develop children's skills and responsibilities.
（3）The passage may be from 　B　.
A.a diary
B.a newspaper
C.an advertisement
D.a story book
【考点】日常生活；细节理解．版权所有
【分析】本文主要讲了大城市和农村的青少年分别做家务的次数。
【解答】（1）A.细节理解题。根据表格内容，2，000 teenagers in big cities，Take out the trash，1，000，在大城市的2000个青少年，倒垃圾，1000，可知有一半的城市青少年倒垃圾。故选A。
（2）D.细节判断题。根据第二段The skills and value from doing chores will be good for children all their life.We can do this by starting a plan of chores and responsibilities（责任） when children are young.做家务的技能和价值将对孩子的一生都有好处，我们可以在孩子还小的时候就开始制定家务和责任的计划，据此判断作者认为做家务可以帮助提升孩子的技能和责任。故选D。
（3）B.文章来源题。根据第一段We asked 4，000 teenagers in China several questions.我们问了4000名中国青少年几个问题。可知本文主要讲了青少年做家务的相关调查，据此判断本文可能来自报纸。故选B。
【点评】阅读全文，理解文章大意，阅读题目后返回原文，在原文中找出与题目对应的内容，选择符合原文原意的答案，完成后再次阅读并检查。
5．（8分）Computers are very important in people's lives.About fifteen years ago，computers were not popular，and many people didn't want to learn computer skills.A few years later，computers became part of human lives，and they make our lives easier and more convenient.
First of all，computers play an important part in companies.People run their businesses with the help of computers.People can store millions of important files（文件） in computers because they have a large memory.And now they can even hold and attend meetings online.
Secondly，computers can help people get more knowledge.Students can use them to learn about some information.One day，our teacher asked us to do a paper on a topic （话题）.I really didn't know much about this topic，so I used one of the computers in my school to look for information about it.Finally，I completed the homework well.
Thirdly，computers give us a lot of fun when we are down.We can watch movies and videos，listen to music，and play games on the computers，and then we may feel better.We can also read novels and books through e﹣books and have conversations with people through chat apps and emails.
Fourthly，computers make our lives easier.We can order our meals and read news online.We can also work from home with the help of a computer.

（1）Which of the following is TRUE according to paragraph 2？ 　B　
A.Businessman makes lots of money from selling computers.
B.Computers with a larger memory may store more documents.
C.Computers are becoming more important to business owners.
D.With computers，students can attend classes online.
（2）What does the third paragraph mainly tell us？ 　B　
A.Computers play an important part in companies.
B.Computers can help people to learn.
C.Computers help people communicate easily.
D.Computers are not allowed to use in some middle schools.
（3）Which of the following is NOT true according to the passage？ 　A　
A.Computers started to get popular around fifteen years ago.
B.Computers can help people run business.
C.Computers can be used to store millions of files.
D.We can talk with people through chat apps on the computer.
（4）What is the passage mainly about？ 　C　
A.When computers became popular with young people.
B.The importance of learning computer skills.
C.How computers help people live a better life.
D.How we can have fun with the computer.
【考点】记叙文；科技创新．版权所有
【分析】文章告诉我们计算机如何帮助人们过上更好的生活。
【解答】（1）细节判断题。根据原文People can store millions of important files（文件） in computers because they have a large memory.（人们可以在计算机中存储数百万个重要文件，因为它们有很大的内存。）可知内存大的计算机可以存储更多的文件。故答案为B。
（2）主旨大意题。根据原文Secondly，computers can help people get more knowledge.Students can use them to learn about some information.One day，our teacher asked us to do a paper on a topic （话题）.I really didn't know much about this topic，so I used one of the computers in my school to look for information about it.Finally，I completed the homework well.（其次，电脑可以帮助人们获得更多的知识。学生可以用它们来学习一些信息。一天，老师让我们就一个题目写一篇论文。我真的不太了解这个话题，所以我用学校的一台电脑来查找相关的信息。最后，我很好地完成了作业。）可知第二段告诉我们电脑可以帮助人们学习。故答案为B。
（3）细节判断题。根据原文About fifteen years ago，computers were not popular，and many people didn't want to learn computer skills.（大约15年前，计算机不流行，许多人不想学习计算机技能。）可知十五年前并不流行。故答案为A。
（4）主旨大意题。根据原文A few years later，computers became part of human lives，and they make our lives easier and more convenient.（几年后，计算机成为人类生活的一部分，它们使我们的生活更容易、更方便。）可知文章告诉我们计算机如何帮助人们过上更好的生活。故答案为C。
【点评】做这类题，要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项写出正确答案。
6．（8分）Anna Du was walking along the beach when she noticed plastics（塑料） there.She reached down to pick them up，and quickly realized a problem：there are many more small pieces than she could deal with.It seems impossible to clean them all up.
Du，12 years old at that time，tried to solve the problem like a good scientist—first，by doing a little research.That's how she learned that eight million tons of plastics end up in the oceans every year.Then she got to build something that could help solve the problem，a remote operated vehicle（遥控潜水器），or ROV.Her ROV could move through﹣water﹣and find plastics on the ocean floor.
The cool part of Du's invention is its detection system.She uses a camera along with three different kinds of light to find the plastics.She also uses visible light to find unnatural colors that make the plastic stand out.
"She has a very good engineering sense to break down a problem like this，and then go after it，" says engineer Carsey Machado，"It sounds simple，but it's a level of thinking that's really amazing."
Du started attending public events and workshops at a university when she was five years old.That was how she picked up the engineering skills necessary to build her ROV.She says actually getting her ROV to move through water well was not easy.She failed many times，but she never gave up trying and testing.
When asked about her future plans，she mentioned wanting to address the effects of climate （气候） change."I think there are a lot of problems that could be solved with new inventions，"says Du.
Du thanks her parents who for years have taken her to student outreach activities，for supporting her interest in science，technology，engineering and math （STEM）.She says she has been able to meet students and scientists there."I know I want to be an engineer because I like building things to help solve big world problems." says Du，"but I'm not sure what kind of engineer I want to be yet."

（1）What does the underlined word it in paragraph one refer to？ 　D　
A.To notice plastics on the beach.
B.To reach down.
C.To quickly realize.
D.To clean up plastics.
（2）What can Du's ROV do？ 　B　
A.It can solve problems like any good scientist
B.It can move through water and find plastics on the ocean floor.
C.It can help people develop a good engineering sense.
D.It can break down plastics.
（3）How did Du get her ROV move through water successfully？ 　B　
A.By looking up information online.
B.By failing and trying again and again.
C.By asking her parents for help.
D.By attending workshops at a university
（4）Which of the following is NOT the reason that made Du succeed in building her ROV？ 　D　
A.Her good engineering sense.
B.Her persistence（not giving up）.
C.Her parents' support.
D.Help from some engineers.
【考点】记叙文；科技创新．版权所有
【分析】材料介绍了Anna Du设计并制作成可以在水中移动，并在海底找到塑料的机器。
【解答】（1）代词指代题。根据原文She reached down to pick them up，and quickly realized a problem：there are many more small pieces than she could deal with.It seems impossible to clean them all up.（她伸手把它们捡起来，很快意识到一个问题：小碎片太多了，她无法处理。要把它们全部清理干净似乎是不可能的。）可知it指的是"清理塑料"这件事。故答案为D。
（2）细节理解题。根据原文Then she got to build something that could help solve the problem，a remote operated vehicle（遥控潜水器），or ROV.Her ROV could move through﹣water﹣and find plastics on the ocean floor.（然后，她要制造一些可以帮助解决问题的东西，一个远程操作的飞行器，或ROV。她的水下机器人可以在水中移动，并在海底找到塑料。）可知它可以在水中移动，在海底找到塑料。故答案为B。
（3）细节理解题。根据原文She says actually getting her ROV to move through water well was not easy.She failed many times，but she never gave up trying and testing.（她说，让她的水下机器人在水井中移动并不容易。她失败了很多次，但她从未放弃尝试和测试。）可知通过失败和一次又一次的尝试。故答案为B。
（4）细节判断题。根据原文She has a very good engineering sense to break down a problem like this，and then go after it（她有很好的工程意识，可以解决这样的问题，然后继续解决它）以及Du thanks her parents who for years have taken her to student outreach activities，for supporting her interest in science，technology，engineering and math （STEM）.（Du感谢多年来带她参加学生拓展活动的父母，感谢他们支持她对科学、技术、工程和数学（STEM）的兴趣。她说，她在那里见到了学生和科学家。）可知并没有得到工程师的帮助。故答案为D。
【点评】做这类题，要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项写出正确答案。
第二节阅读填空（满分5分）阅读短文及文后A～E选项，选出可以填入各题空白处的最佳选项，并在答题卡上将该选项编号涂黑（选择E选项时，请在答题卡上同时填涂AC 选项）。
7．（5分）Since 2017，short videos have got millions of views online.Many people create and share short videos on popular video app like Douyin and Kuaishou.（1）　C　They show people doing activities like cooking，exercising and singing.
（2）　B　According to a report，more than 50 percent of Grade 7 and 8 students said they enjoy watching these short videos.About 47 percent of them have posted their own videos.
From the videos，teenagers see funny and exciting things they won't usually see.（3）　D　For example，a13﹣ year﹣ old user named Xiao Qianyu has posted videos showing her learning jazz dance.This has won her many fans.
（4）　A　Some students spend too much time watching them and not enough time studying.Some videos are not suitable for teenagers and have a negative effect on them.
To deal with this problem，Douyin added a new function（功能）.（5）　E　Also，the government asked companies to make stricter rules for these apps and take away the unsuitable videos.

A However，short video apps can also cause problems.
B.Most of the users on the apps are young people，including teenagers.
C.The videos are 15 seconds to a few minutes long.
D.Many teens also like to share the fun things they do with others.
E.It locks the app if someone uses the app for over two hours a day.
【考点】说明文；科普知识．版权所有
【分析】本文讲了自2017年以来，短视频在网上获得了数百万的浏览量。详细地介绍了视频受欢迎的原因和存在的一些问题等。
【解答】细节推理题。
（1）根据前句Many people create and share short videos on popular video apps like Douyin and Kuaishou.（许多人在抖音和快手等热门视频应用程序上创建和分享短视频。）可知说的是一些视频，结合选项，应说这些视频长达15秒到几分钟。故选C。
（2）根据后句According to the report，more than 50 percent of Grade 7 and 8 students said they enjoy watching these short videos.（根据报告，超过50%的七年级和八年级学生表示他们喜欢看这些短视频。）可知说的是使用人群，结合选项，应说这些应用程序的大多数用户是年轻人，包括青少年。故选B。
（3）根据后句For example，a 12﹣year﹣old user named Xiao Qianyu has posted videos showing her learning jazz dance.This has won her many fans.（例如，一位名叫肖倩玉的12岁用户发布了视频，显示她正在学习爵士舞。这为她赢得了很多粉丝。）可知说的是分享的内容，结合选项，应说许多青少年也喜欢与他人分享他们做的有趣的事情。故选D。
（4）根据后句Some students spend too much time watching them and not enough time studying.Some videos are vulgar and not suitable for teenagers.（有些学生花了太多时间观看，而没有足够的时间学习。一些视频低俗，不适合青少年观看。）可知说的是带来的问题，结合选项，应说然而，这些视频也会带来麻烦。故选A。
（5）根据前句To deal with this problem，Douyin added a new function.（为了解决这个问题，抖音添加了一个新功能。）可知说的是一个新功能，结合选项，应说如果有人每天使用该应用超过两个小时，它就会锁定该应用。故选E。
【点评】做题时结合原文和题目有针对性找出相关语句进行仔细分析，保证上下文意思通顺，结合选项选出正确答案。
四、写作（共三节）
第一节语篇填词 阅读下面短文，根据其大意及所给单词的首字母写出所缺单词。在填写答卷时，要求写出完整单词。（每空限填一词）
8．（5分）School education is very important and （1）u　seful　.Yet no one can learn everything at school and teachers can't teach their students everything they want to know.Their job is to show his students how to learn.He teaches them how to read and how to think.So the students can learn （2）m　uch　more by themselves.
It is more important to know how to study by oneself.It's quite easy to learn something，but it's difficult to use it to solve problems.Great （3）i　nventors　do not get everything from school，but they still can invent many things to change the world a lot and make people live a（4）b 　etter　life.
How can they do all of this？That's because they know how to study.A lot of things are not taught in the classroom.They get a lot of knowledge by reading outside school.They work hard and never （5）g　ive　up all their lives.
【考点】说明文；教育．版权所有
【分析】本文讲述了学校教育是非常重要的，但是不是所有的东西都在学校里学会的，老师应该教会学生如何去思考问题。
【解答】（1）考查形容词。句意：学校教育是非常重要和有用的。根据School education is very important（学校教育是非常重要）及其首字母提示，可知说的是重要和有用的。故填useful。
（2）考查短语。句意：所以学生可以自学更多。根据He teaches them how to read and how to think.（他教他们如何阅读和思考。）及其首字母提示，可知much more更多，故填much。
（3）考查名词。句意：伟大的发明家不是从学校学到所有东西，根据but they still can invent many things to change the world a lot （但是他们仍然可以发明很多东西来改变世界很多）及其首字母提示，可知说的是发明家，由do，知道这里主语是复数。故填inventors。
（4）考查形容词。句意：但他们仍然可以发明很多东西来改变世界，让人们过上美好的生活。根据but they still can invent many things to change the world a lot （但是他们仍然可以发明很多东西来改变世界很多）及其首字母提示，可知说的是让生活更好。故填better。
（5）考查动词。句意：他们努力工作，一辈子都不放弃。根据They work hard （他们努力工作）及其首字母提示，可知give up放弃，句子是一般现在时，主语是复数。故填give。
【点评】首字母填空类型题要充分理解句意，再根据首字母提示完成试题，注意时态，单复数，词性等变化。
第二节完成句子（共5题；每小题2分，满分10分）
9．（2分）我们应该保护那些濒危动物，不然它们很快就会灭绝．
We should protect the animals in danger，or they will　die　　out　soon．
【考点】简单句．版权所有
【分析】We should protect the animals in danger，or they will die out soon．
【解答】根据题干，可知需要翻译的是" 灭绝"，其英语表达形式是"die out"，will+动词原形．句意：我们应该保护那些濒危动物，不然它们很快就会灭绝．
故答案为die out．
【点评】做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化．
10．（2分）你的成功取决于你的努力程度。
Your success　depends on　 how hard you work.
【考点】简单句．版权所有
【分析】Your success depends on how hard you work.
【解答】根据题干，可知考查：depend on取决于，由句意可知时态是一般现在时。主语是单数，用动词第三人称单数形式。
故答案为 depends on．
【点评】做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化。
11．（2分）轮子可能是历史上最伟大的发明之一。
The wheel is perhaps 　one　　of　　the　　greatest　 inventions in history.
【考点】形容词的最高级．版权所有
【分析】轮子可能是历史上最伟大的发明之一。
【解答】根据句意可知，此题考查固定短语"one of the +形容词最高级+名词复数"，表示"...之一。great"伟大的"的最高级为greatest。
故答案为：one ，of ，the ，greatest。
【点评】根据句意，确定考查形容词的等级比较，写出正确形式。
12．（2分）我的姐姐经常通过电子邮件与我们保持联系。
My elder sister often　keeps　　in　　touch　　with　 us by e﹣mail.
【考点】简单句．版权所有
【分析】My elder sister often keeps in touch with us by e﹣mail.
【解答】keep in touch with sb.与某人保持联系；根据句意用一般现在时，主语是第三人称单数，谓语动词用第三人称单数形式。
故答案是keeps in touch with
【点评】此题考查汉译英，在熟知每个汉语的英语翻译的基础上，根据语法结构，组合短语或者句子，便可得出正确答案。
13．（2分）格林家扔掉的玻璃和布朗家一样多。
The Greens throw away　as　　much　　glass　　as　the Browns.
【考点】简单句．版权所有
【分析】The Greens throw away as much glass as the Browns.
【解答】根据题干，可知考查：as much glass as和……一样多的玻璃。glass此处是不可数名词。
故答案为as much glass as．
【点评】做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化。
第三节书面表达（满分15分）
14．（15分）科学技术日新月异，新发明给人们的生活带来了很多便利。假如你家就有一台智能家用电器——扫地机器人，你的外国朋友对此很感兴趣，请你用英语写一篇短文，向朋友介绍你的机器人。短文需包括下表所有提示内容：
扫地机器人
外形
扫地机器人：圆形的底部有三个轮子
特点
自动清洁地板；使用电能，环保；可用手机控制
使用后的评价
（请补充两点）
注意：
（1）参考词汇：智能家用电器（smart appliance）、扫地机器人（robot cleaner）；
（2）词数：80词左右（短文的开头已给出，不计入词数）；
（3）不得透露班级、姓名等个人信息，否则不予评分。

Many inventions have changed people's life.My robot cleaner is one of them.
【考点】科普知识与现代技术．版权所有
【分析】【高分句型一】
It's as smart as a human being because it can clean the floor itself in a house.它和人类一样聪明，因为它能自己打扫房子里的地板。
as +adj/adv原级 +as，表示……和……一样。
【高分句型二】
Above all，its more convenient for us to use it because we can control it by using our mobile phones.最重要的是，我们使用它更方便，因为我们可以用手机控制它。
because，因为，引导原因状语从句。
【解答】Many inventions have changed peoples life.My robot cleaner is one of them.
It's a round smart appliance，just like a big cake UFO with three wheels at the bottom of it so that it can move freely.（外形） It's as smart as a human being because it can clean the floor itself in a house.【高分句型一】What's more，it works with electricity，so it will not pollute the air.Above all，its more convenient for us to use it because we can control it by using our mobile phones.（特点）【高分句型二】
In my opinion，the robot cleaner is a great invention and our good friend.It saves time and helps us live a better life.（好处）Why not have a try and buy one for yourselves？
【点评】能够根据提示进行书面表达，能够围绕主题准确使用一定的语法、词汇、短语和句型等，清楚连贯地表达自己的思想，进而完成写作任务。