高中英语外研版 (2019)必修 第一册Unit 6 At one with nature单元测试随堂练习题

这是一份高中英语外研版 (2019)必修 第一册Unit 6 At one with nature单元测试随堂练习题，共18页。试卷主要包含了5分，满分37等内容，欢迎下载使用。

 Unit 6 At one with nature
第一部分 听力（共两节，满分30分）略
第二部分  阅读（共两节，满分50分）
第一节（共15小题；每小题2.5分，满分37.5分）    阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A 
Learning while at home doesn't have to be a bore! Here are some super-fun ways to keep your brain active this month.
BITESIZE
The BBC's Bitesize website offers fun lessons on lots of subjects. Besides, Bitesize Daily on iPlayer and the Red Button has daily educational programmes hosted by experts, teachers and even famous faces. Cool!
• Head to bbc.co.uk/bitesize
IMPERIAL WAR MUSEUM
Feel surprised about what life was like during the war? Or which animals have helped in wartime? In their video Adventures in History (shown to the public every Wednesday at 2 pm), the Imperial War Museum's experts will bring great history right into your home.
• Check out iwm.org.uk/learning
ROYAL ACADEMY
Get your creative juices flowing ( 流动) with the Royal Academy's collection of artistic activities, encouraged by well-known artists. Try your hand at all kinds of art, from crayons to animation (动画制作)!
• Find out more at tinyurl.com/royalacademyfamily
MARINE CONSERVATION SOCIETY
Bring the sea indoors with the Marine Conservation Society's Cool Seas Explorers website. There are a lot of games and competitions where you can learn about everything from kelp forests to plastic ( 塑料) pollution. Plus, there are galleries of super sea living beings for you to find out about.
• Swim over to mcsuk.org/coolseas
21. Which website will a history-lover be interested in?
A. bbc.co.uk/bitesize.   
B. mcsuk.org/coolseas.
C. iwm.org.uk/learning.       
D. tinyurl.com/royalacademyfamily.
22. Which of the following centres on art?
A. MARINE CONSERVATION SOCIETY.
B. IMPERIAL WAR MUSEUM.
C. ROYAL ACADEMY.
D. BITESIZE.
23. What do we know about MARINE CONSERVATION SOCIETY?
A. It is made by the BBC.
B. It offers many interesting games.
C. It plays videos every Wednesday.
D. It introduces knowledge about the sea only.
B 
I grew up on a farm — but it was only 10 acres (英亩), so it was not a large farm. More of a hobby farm! But being in that environment and learning to operate (操作) machines really got me interested in farming. By the age of 16, I had begun my first farming job — using those 10 acres to plant onions. I had a lot of help! We had a family friend who owned a produce company, and he was the one that said, “If you're going to move into farming, we can guide you”. They really helped from start to finish, with everything from seed (种子) depth to when to water the onions. I learned a lot from them. This first taste made me realize that a life on the land was for me.
I love the fact that what I do influences so many families. I also get on with my workers and my customers. I use social media platforms to get in touch with buyers and to make it as clear as possible about how I produce food that ends up in our homes. There are a lot of misunderstandings about farming. So, I try to put out as much helpful media as I can. We work so hard to put food on the table, and we would like people to understand the ins and outs of what we do.
One of the most common misunderstandings about farming is pesticide (杀虫剂) use. Some people think that if it comes with a warning sign, it's going to kill everybody. In reality, there are important steps that we take to make sure that it's safe. We take the natural method wherever we can, but if we have to use some kind of pesticide, we read and understand the instruction before we use the product. Further down the line, we send some of our plants to the lab. We've never had any bad results.
I'm young, and I'm willing to take chances. I'd like people to say that I was a pioneer in farming.
24. What was the author's life like before the age of 16?
A. He was not quite into farming.
B. He had many different hobbies.
C. He visited a produce company often.
D. He got hands-on farming experience.
25. In what way was the family friend important to the author?
A. The friend provided machines for him.
B. The friend passed on knowledge to him.
C. The friend gave him some special seeds.
D. The friend watched him farm from start to finish.
26. Why is the author so active on social media?
A. To keep in touch with his workers.
B. To learn about farming from others.
C. To bring the truth about farming to light.
D. To show what ends up in his dishes daily.
27. How does the author use pesticide?
A. He only uses it when he has to.
B. He doesn't follow the instruction.
C. He brings it to the lab before using it.
D. He uses it by following natural methods.
C 
Hiking (徒步旅行) the Longji Rice Terraces in southern China is something I would advise everyone to do. The area covers over 16, 000 acres, with their creation beginning during the Yuan Dynasty. If you translate it, the name means “Dragon's Backbone” because of the fact that the rice terraces look just like a dragon's scales, while the top of the mountain looks like its backbone.
I began my visit from Ping'an, a small village, as I had stayed at the “Li Qing Guesthouse”. From where the bus drops you off you will pass small shops, and then you will hike up to get to the guesthouse. It's really hard, especially with your bag on, but the view of the hill and rice terraces from your bedroom window is really great. The people are also very helpful and friendly as they helped my group to get a guide for the Longji Rice Terraces hike. The rooms have air conditioning and an in-room bathroom. Moreover, the food is delicious, and you can choose either Western comfort food or local Zhuang food.
From Ping'an I hiked for 5 hours through the Longji Rice Terraces to the village of Dazhai. During the trip not only will you view nature at its most breathtaking, but you'll also get the chance to see colorfully dressed local Zhuang and Yao women working in the fields. The terraces are dotted (星罗棋布于) with small homes, and since I was with a local guide I got the chance to stop for lunch in one of them. It was really beyond all expectations that the woman would go out into the fields to “pick our lunch” before preparing a delicious meal of rice, egg, sweet potato leaves, and new potatoes (just like in America!). Although the break was nice, I honestly couldn't wait to get back to the trip and continue immersing (沉浸) myself in the beauty of the rice terraces. The only real way I can describe it is that you'll feel like you're on another planet the entire time, as scenery (风景) that beautiful is just unworldly.
28. What does the first paragraph mainly talk about?
A. The advice the author offers on hiking.
B. The popularity of the Longji Rice Terraces.
C. The background of the Longji Rice Terraces.
D. The reason why the author travels around China.
29. What did the author think of the place where he lived in Ping'an?
A. He thought it was boring.
B. He thought it was satisfying.
C. He thought it was hard to find.
D. He thought it was cleverly designed.
30. What surprised the author when he was traveling in the village of Dazhai?
A. The woman got the food directly from the field to cook.
B. The woman kept working in the field for a long time.
C. The woman showed the author around the village.
D. The woman prepared Western food.
31. Where does this text probably come from?
A. A history paper.                     
B. A travel magazine.
C. A geography textbook.           
D. An environment report.
D 
It's become accepted that exposure ( 暴露) to blue light — the type produced by electronic device's ( 设备的) screens — is bad for sleep. Researchers have understood that your body is controlled by its circadian rhythms. They are a set of repeated physical, mental, and behavioral changes. The clearest circadian rhythm is the one that makes you tired at night and watchful during the day. This process ( 过程) is directed by melatonin, a chemical produced by your body when it's dark outside. Nighttime light exposure can put this process into disorder, stopping melatonin production and keeping you up longer. Many studies have suggested blue light is an especially powerful melatonin suppressant (抑制剂).
That thinking about blue light has led to inventions meant to stop the influence, like “night mode (模式)” settings on your iPads or phones and glasses that say people believe decrease blue light.
But a paper by a group of researchers at the University of Manchester in the U. K. printed in Current Biology challenges that belief. After exposing mice to lights that were different in color but of the same brightness and watching their following activity, the team said that yellow light actually seems to stop sleeping more than blue. Warm light, they believed, could make the body think it's daytime, while cooler blue light more closely copies evening.
Animal studies should be accepted with a certain degree of care, as they often do not translate directly to human behavior, says Dr. Cathy Goldstein. She is a sleep expert at Michigan Medicine. Though mice are often used in sleep research, Goldstein notes since they are active at night, they may behave differently to light than humans do.
Goldstein agrees research on how light from electronics influences sleep hasn't been conclusive. But she says there's no reason not to use night mode on electronics. Just remember to turn down the brightness, she says.
32. What will happen when there is more melatonin in your body?   
A. You'll feel sleepy.                 
B. You'll feel unhappy. 
C. You'll want to get up.           
D. You'll want more food. 
33. What did the study printed in Current Biology find?  
A. Brightness influences sleep more than color.
B. Blue light does very little harm to your health.
C. Your body could be influenced by circadian rhythms.  
D. Yellow light may be worse for sleep than blue light. 
34. What does Goldstein think of the study mentioned in Paragraph 3?  
A. Its research method is very creative.  
B. It will have a big influence on electronics. 
C. Its results may only be true to some degree. 
D. It may deepen our thinking about blue light.
35. What is the best title for the text? 
A. Is yellow light a melatonin suppressant?
B. Should I use night mode on my phone? 
C. Should animals be used in sleep research?  
D. Is blue light more useful than yellow light?
第二节（共5小题；每小题2.5分，满分12.5分）
阅读下面短文, 从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
Gardening is a great hobby to take up.  36  Whether you're looking to grow some delicious produce or beautiful flowers, these tips for beginners will get you started off on the right foot!
Don't be worried about finding a suitable place in your backyard, simply start a container garden anywhere you'd like. In this way you can make sure the soil is fertile ( 肥沃的) and easily prevent unwanted wild plants from growing there! You'll be more likely to follow through with your gardening if your container garden is near your back door or a window you use often.  37
Make sure your container has good soil, which means plenty of compost (混合肥料)!  38  Composting is easy; just save your food waste, especially eggshells, vegetable leaves and fruit cores (核)!
 39  You can check both at the United States Department of Agriculture's plant hardiness zone ( 耐寒区) map. When you've known that your plants will grow in your zone, make sure you plant them at the right time of year! Be sure to also check the seed's information — it will likely be spring or summer.  40  For easy-to-grow produce, some gardening experts recommend ( 推荐) tomatoes and onions. Easy-to-grow flowers include sunflowers and roses. Just ask your local plant experts to direct you to the “hardy” plants.
A. A gardener with no compost is no gardener at all.
B. First start small, then work your way up to a bigger garden.
C. Some plants are just known to be easier to grow than others.
D. It gets you outside, burning fat, and produces positive results.
E. You also need to plant the right type of plants, at the right time.
F. Make sure you give young plants plenty of water at the right time.
G. Plants that are over fertilized or treated with more chemicals can become weak.
第三部分  语言运用（共两节，满分30分）
第一节（共15小题；每小题1分，满分15分）
阅读下面短文，从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。
One day in 1998, scientist Matt Finn was doing research in Florida's 10,000 Islands area. But then he  41  something from his boat's tower. It was a sea turtle (海龟), he soon  42 , but one that wasn't acting quite  43 . “It kept trying to dive (潜水),” Finn says, “and it kept coming right back up to the surface.” 
Finn knew he had to  44 . “I took hold of her and pulled her aboard,” he says.
He could see that she was  45 . The sea turtle had a crack in her shell. Finn had to  46  a local wildlife conservation group. Soon they arrived and  47  the sea turtle to a rescue center in Clearwater.
From there, Finn and the sea turtle went in  48  directions. The scientist continued to work with protected animals in South Florida.
The sea turtle received  49  at the rescue center in Clearwater. She was nursed back to health, but she  50  floated ( 漂浮) like she used to, making it  51  for her to go back into the wild. She  52  Clearwater for five years, at which point a Shedd Aquarium volunteer suggested she might find a lifetime  53  in Shedd's Caribbean Reef.
Fast forward 13 years. The turtle had grown strong among the fishes of the Caribbean Reef. Finn was planning his first trip to Chicago and called Shedd about  54  the sea turtle he saved long ago.
So Finn and the sea turtle met again. He rubbed his hands over her shell, clearly enjoying the  55 .
41. A. noticed           B. held                   C. got            D. imagined
42. A. proved         B. agreed         C. realized            D. suggested
43. A. fast            B. right                   C. seriously         D. wisely
44. A. leave              B. understand   C. act              D. wait
45. A. saved              B. injured         C. forgotten             D. caught
46. A. care about      B. deal with            C. point at               D. call in
47. A. invited            B. rushed         C. forced                D. guided
48. A. new             B. safe                  C. different              D. correct
49. A. training         B. treatment          C. attention             D. service
50. A. always            B. almost         C. also                   D. never
51. A. impossible      B. necessary           C. reasonable            D. natural
52. A. searched for    B. looked at          C. stayed at               D. showed around
53. A. home              B. friend          C. job                    D. guard
54. A. accepting        B. teaching             C. seeing                 D. choosing
55. A. research         B. expression   C. success                 D. connection
第二节（共10小题；每小题1.5分，满分15分）
阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。
Connecting with nature isn't anything new or a recent discovery. Humanity has had a close connection with nature since the beginning of time. Being able to satisfy that need is important to your health and well-being. As living areas become more urbanized ( 都市化的), your ability 56. ________ (connect) with nature decreases. Many who live in 57. ________ (serious) congested (拥挤的) cities have the poorest quality of life because 58. ________ (they) connection to nature is broken.
Many urban 59. ________ (community) are taking the time to plant trees and flowers around their neighborhoods in order to reconnect with nature. Such greenery improves more than just your quality of life. It also improves your connection with your own community.
Wide open environments have a unique way of 60. ________ (improve) your natural five senses. Being surrounded ( 围绕) by nature 61. ________ (help) you know more about your surroundings. Green or open space environments provide a sense of calmness 62. ________ allows you to hear, smell, and see things that you normally wouldn't be able to notice.
Connecting with nature has positive effects 63. ________ your overall health. Studies have shown that when patients are in hospital, being near greenery actually increases recovery ( 恢复) rates. What's more, 64. ________ has been proved that people who exercise in natural environments feel 65. ________ (comfortable) than those who jog down city streets.
第四部分  写作（共两节，满分40分）
第一节（满分15分）
假定你是李华，是某国际高中的学生。上周五你参加了校学生会举办的“Plants around us”主题讲座（lecture），请给你的美国笔友Simon写一封邮件，分享此次活动。内容包括：
1. 写信目的；
2. 讲座内容；
3. 自己的感受。
注意：写作词数应为80左右。
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
第二节（满分25分）
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。
“Luke! Amy! We need some apples,” said Grandma.
I looked outside. Darkness was falling in the yard. I didn't want to go up to the orchard (果园). My cousins had told me the orchard was mysterious (神秘的) and strange things were happening up there.
“Afraid to go? You're so timid ( 胆小的),” my brother Luke laughed and took hold of two containers. “Let's go.”
I wanted to show my bravery so I followed him. On the way to the orchard, we saw Mr. Smith feeding a carrot to his horse, Sandy. “How's Sandy?” I asked Mr. Smith. “He's always running off,” said Mr. Smith. Then I asked him whether he would like to pick apples with us. Mr. Smith shook his head and explained that the hill was too steep for him. I told him that we would pick some for him.
“That would be a treat.” Mr. Smith handed me an empty box.
Luke and I started up the hill. It was silly to be afraid, I told myself. I'd never seen anything mysterious. I'd only heard some stories from my cousins. As soon as we arrived at the orchard, Luke climbed a tree and started picking apples. I stood on the ground to pick from the lower branches of the next tree over. Luke filled Mr. Smith's box halfway with apples, and then started filling his own container. I filled my basket, and then filled Mr. Smith's box to the top. I tried picking up the box. It was too heavy.
Suddenly, I heard a strange sound! What was that? My heart beat fast. “Luke!” I called. “Luke?”
Luke looked over. “What's up?”
I listened, but now the sound was gone. “Never mind. Can you help me carry Mr. Smith's apples?” I said.
Together we carried the box down the hill to Mr. Smith's house and set it in his doorway. Mr. Smith thanked us and gave us each a cookie to eat while we walked.  
注意：
1. 续写词数应为150左右；
2. 请按如下格式在相应位置作答。
When we arrived back at the orchard, I was surprised to see some of my apples were missing.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
“Now we know who ate our apples,” said Luke, laughing. __________________
_______________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案
21-25 CCBDB        26-30 CACBA 31-35 BADCB      36-40 DBAEC       
41-45 ACBCB 46-50 DBCBD      51-55 ACACD      
56. to connect 57. seriously        58. their           59. communities
60. improving        61. helps               62. that / which
63. on / upon         64. it                 65. more comfortable   
写作
第一节
One possible version:
Dear Simon,
I attended a lecture called “Plants around us” last Friday and I'm writing to share my feelings on it with you.
Held by the student council, the lecture showed us many interesting facts about plants which are often unnoticed in our life. The speech not only broadened my views, but also helped me truly realize the importance of protecting those plants. Some plants showed in the lecture only grow in China, so I've attached some photos. Hope you will like them. 
Yours,
Li Hua
第二节
One possible version:
When we arrived back at the orchard, I was surprised to see some of my apples were missing. Some of Luke's apples were missing, too. He looked worried and said, “Let's pick a few more and go.” Luke climbed up a tree. I quickly picked apples from the lower branches. Then came a strange sound. I looked around and tried to see who was there. Branches reached out like arms. Something brushed against my back. I shouted. “What's the matter?” shouted Luke, going down the tree. The strange sound came again. I turned and relaxed. It was Mr. Smith's horse, Sandy. He almost frightened me to death.
“Now we know who ate our apples,” said Luke, laughing. “You found my horse,” Mr. Smith said when he saw Luke and I walking down the hill with Sandy. I smiled and asked him whether he knew Sandy was the mystery of the apple orchard. Mr. Smith shook his head and said that he'd heard strange things were happening up there but he didn't know it was Sandy. “So it is not surprising that he's always running off,” Mr. Smith added. We all laughed.
部分解析
阅读
第一节
A篇
主题语境：人与自我——生活与学习
本文是应用文。文章介绍了四个可供居家学习的节目。
21. C。细节理解题。根据IMPERIAL WAR MUSEUM介绍内容中的In their video Adventures in History (shown to the public every Wednesday at 2 pm), the Imperial War Museum's experts will bring great history right into your home可知，该节目主要是带领观众探索历史，因此历史爱好者最有可能会浏览iwm.org.uk/learning来获取相关知识。
22. C。细节理解题。根据ROYAL ACADEMY介绍内容中的Get your creative juices flowing  with the Royal Academy's collection of artistic activities, encouraged by wellknown artists可知，该节目主要聚焦于艺术。
23. B。细节理解题。根据MARINE CONSERVATION SOCIETY介绍内容中的There are a lot of games and competitions where you can learn about everything from kelp forests to plastic pollution可知，该节目为人们提供了诸多有趣的游戏。
B篇
主题语境：人与自我——生活与学习
本文是记叙文。作者自幼受周围环境影响而对农业产生极大兴趣并逐渐以此为生。
24. D。细节理解题。根据第一段中的I grew up on a farm以及But being in that environment and learning to operate machines really got me interested in farming可知，作者很小的时候就体验农场生活。
25. B。推理判断题。根据第一段中的They really helped from start to finish, with everything from seed depth to when to water the onions. I learned a lot from them可知，这个朋友给作者传授经营农场的知识。
26. C。推理判断题。根据第二段中的So, I try to put out as much helpful media as I can. We work so hard to put food on the table, and we would like people to understand the ins and outs of what we do可知，作者希望通过社交媒体让大家了解农场经营的真相。
27. A。推理判断题。根据第三段中的We take the natural method wherever we can, but if we have to use some kind of pesticide可知，作者会在自然处理法不见效的时候才去使用杀虫剂。
C篇
主题语境：人与自我——生活
本文是记叙文。作者分享了自己游览龙脊梯田的所见所闻。
28. C。段落大意题。作者写作本文是要分享他游览龙脊梯田的所见所闻，第一段首句即文章主题句，点明他浏览的地点——龙脊梯田，接下来从该梯田的覆盖面积、始建时间以及名字来历等方面介绍了龙脊梯田的相关背景知识。
29. B。推理判断题。根据第二段中的the view of the hill and rice terraces from your bedroom window is really great ... The rooms have air conditioning and an in-room bathroom ... the food is delicious, and you can choose either Western comfort food or local Zhuang food可知，作者对他在平安村住的旅店比较满意。
30. A。细节理解题。根据第三段中的It was really beyond all expectations that the woman would go out into the fields to “pick our lunch” before preparing a delicious meal of rice, egg, sweet potato leaves, and new potatoes (just like in America!)可知，令作者感到意外的是那名妇女直接从田野里面采摘食材并准备午饭。
31. B。文章出处题。作者分享了自己在游览龙脊梯田时的所见所闻，并建议读者亲自去领略龙脊梯田的壮美。由此可知，本文最有可能来自于旅游杂志。
D篇
主题语境：人与社会——科学与技术
本文是议论文。文章讨论了电子屏幕产生的蓝光和黄光是否会影响睡眠的问题。
32. A。推理判断题。根据第一段中的This process is directed by melatonin, a chemical produced by your body when it's dark outside. Nighttime light exposure can put this process into disorder, stopping melatonin production and keeping you up longer可知，夜晚人体内褪黑激素停止分泌的话，会让人清醒的时间变长，反之，体内褪黑激素增多，人会感到困倦。
33. D。细节理解题。根据第三段中的the team said that yellow light actually seems to stop sleeping more than blue. Warm light, they believed, could make the body think it's daytime, while cooler blue light more closely copies evening可知，这项研究发现黄光可能比蓝光更能干扰睡眠。
34. C。推理判断题。根据第四段中的Animal studies should be accepted with a certain degree of care, as they often do not translate directly to human behavior以及Goldstein notes since they are active at night, they may behave differently to light than humans do可知，Goldstein认为实验中动物的行为并不一定能直接反映人类的行为，且白鼠是夜间活动的动物，它们表现出的行为可能和人类不一样，由此可推知，Goldstein应该认为该研究的结果可能仅在一定程度上是正确的。
35. B。标题归纳题。通读全文可知，本文讨论了电子屏幕产生的蓝光和黄光是否影响睡眠的问题。根据第二段和最后一段可判断，B项标题能够起到统领全文的作用。
第二节
主题语境：人与自然——自然生态
本文是说明文。文章主要介绍了园艺新手打造自己花园的方法。
36. D。D项中的It指代上文中的Gardening，且该项中的gets you outside、burning fat以及produces positive results承接文章首句，说明了园艺的诸多好处。
37. B。B项中的First start small以及work your way up to a bigger garden分别与上文中的start a container garden和follow through with your gardening相照应，作者在该段建议园艺新手们从简单的盆栽园艺入手，然后再逐步开始打理大的花园。
38. A。根据上文中的Make sure your container has good soil, which means plenty of compost可知，作者在该段主要强调了肥料的重要性。
39. E。设空处是本段的主旨句。下文中You can check both中的both指代E项中的the right type of plants以及the right time，同时E项中的the right type of plants和the right time分别与下文中的Be sure to also check the seed's information以及make sure you plant them at the right time of year相照应。
40. C。C项中的be easier to grow与下文中的For easytogrow produce以及Easytogrow flowers相照应，作者在此处主要向园艺新手们推荐了容易种植和打理的植物。
语言运用
第一节
主题语境：人与自然——环境保护
本文是记叙文。文章讲述了一名科学家与他十八年前救过的海龟重逢的感人故事。
41. A。由下文中的It was a sea turtle及It kept trying to dive可推断，Finn应该是看到或者发现有个东西。四个选项中，只有noticed（注意到）符合语境。
42. C。空后描述的是Finn进一步的发现。可见此处的动词应表示“发现，意识到”，故选realized。
43. B。下文中的 It kept trying to dive ... and it kept coming right back up to the surface说明这只海龟表现不正常，right符合语境。
44. C。下文中的 I took hold of her and pulled her aboard可提示Finn采取了行动，故填act。
45. B。下文中的The sea turtle had a crack in her shell说明海龟受伤了，故选injured。
46. D。下文中Soon they arrived中的they指代本句中的a local wildlife conservation group。由此可推断，Finn应该是联系了当地的一个野生动物保护团体，向他们求助，故选call in。call in 请来……（帮忙处理）。
47. B。由海龟当时的处境及下文中的The sea turtle received ... at the rescue center in Clearwater可知，海龟被送往了一家救助中心。四个选项中，只有rushed（速送）符合语境。
48. C。由下文中的The scientist continued to work with protected animals in South Florida和The sea turtle received ... at the rescue center in Clearwater可知，Finn继续做动物保护工作，而海龟则待在Clearwater的一家救助中心。也就是说，从那儿他们分路而行，different 符合语境。
49. B。上文中提到海龟受伤了。结合下文中的She was nursed back to health可知，海龟在救助中心接受了康复“治疗（treatment）”。
50. D。51. A。由下文中的She ... Clearwater for five years及The turtle had grown strong among the fishes of the Caribbean Reef可知，海龟没有回到自然环境中去。结合本句中的She was nursed back to health, but可知，海龟“再也无法（never）”像以前那样漂浮，这使得她“不可能（impossible）”再回到大自然环境中。
52. C。由上文可知，海龟不可能再回到大自然环境中。结合下文中的Fast forward 13 years. The turtle had grown strong among the fishes of the Caribbean Reef可推断，她在Clearwater“待了（stayed at）”五年。
53. A。由下文的描述可知，海龟后来一直待在Caribbean Reef。也就是说Caribbean Reef成了她永久生活的家园，故选home。
54. C。文章最后一段中的So Finn and the sea turtle met again和He rubbed his hands over her shell可提示Finn想见自己十八年前救过的海龟，故选seeing。
55. D。结合全文可知，Finn意外遇到受伤的海龟，并且救了她。十八年后，他俩又再次见面。结合本句中的He rubbed his hands over her shell可知，设空处应该表示他们的这次见面或者他们之间奇妙的缘分，connection（联系）符合语境。
第二节
主题语境：人与自然——环境保护
本文是说明文。文章主要介绍了人与自然关系的重要性。
56. to connect。考查动词不定式作定语的用法。设空处作后置定语，修饰名词ability。ability to do sth. 做某事的能力。
57. seriously。考查副词。设空处作状语，修饰形容词congested，用副词，故填seriously。
58. their。考查代词。根据语境可知，此处表示的是“他们”与自然的关系，故填形容词性物主代词their。
59. communities。考查可数名词的复数。community意为“社区”，为可数名词，根据上文中的Many以及下文中的系动词are可知，此处表示复数意义，故填communities。
60. improving。考查动词-ing形式作宾语的用法。设空处作介词of的宾语，故填improving。
61. helps。考查主谓一致。根据语境可知，此处描述的是客观事实，用一般现在时，又因句子的主语为动词-ing形式结构Being surrounded by nature，谓语动词用第三人称单数形式，故填helps。
62. that / which。考查关系代词。设空处引导限制性定语从句，指代先行词sense，且在从句作主语，故填关系代词that或者which。
63. on / upon。考查介词。have an effect on / upon ... 对……产生影响。
64. it。考查it的用法。设空处作形式主语，句子真正的主语为后面that引导的从句，故填it。
65. more comfortable。考查形容词比较级。根据语境以及空后的than those who jog down city streets可知，此处表示比较意义，故填more comfortable。