人教版新课标高中英语2019-2020学年必修五第四单元Unit4单元测试试题含答案

⼈教版新课标⾼中英语2019-2020学年必修五第四单元Unit4单元测试试题含答案
Unit 4 Making the news
第⼀节（共15⼩题；每⼩题2分，满分30分）
阅读下列短⽂，从每题所给的A、B、C和D四个选项中，选出最佳选项。

A
Dear students,
I am Jeremy C. Curimao and it is my great pleasure to share with you my experience in journalism.
What a year it has been! Since I decided to choose Journalism earlier on in the year, my ideas and thoughts about journalism in general have really changed. From the news articles I have written to the documentaries (纪录⽚) our class has watched, I have certainly gained quite a broad knowledge about journalism.
I am very thankful for this class. Believe it or not, I am going to college to major in Journalism! I am going to San Francisco State University in the fall to get my general education done and hopefully stay with my major, which is Online / Print Journalism! Taking this high school course was a really good choice on my part and I plan to develop my writing and publishing skills in college.
It is very unfortunate that Journalism will not be a main course next year, and I was really saddened by the news. Despite (不管) this discomforting piece of information, I am glad that the newspaper will still continue to be published in a school club.
I leave this course with a new confidence in writing. I hope that other writers now in Oceana will be equally inspired and finally join the Journalism Club in hopes of taking charge of The Weekly Fog.
Thank you.
Yours,
Jeremy C. Curimao
21. What did the author do in the past year?
A. He entered a college.
B. He learned a lot about journalism.
C. He published articles in a newspaper.
D. He changed his plan to take up Journalism.
22. What does the author plan to do this fall?
A. Attend San Francisco State University.
B. Take more high school courses.
C. Be a newspaper journalist.
D. Set up a training class.
23. Why is the author unpleased?
A. He will leave the class.
B. He has failed to inspire other students.
C. He has lost his chance to major in Journalism.
Keeping fit often means sharing a busy pathway (⼩路) with cyclists, runners and walkers, but imagine facing the task of doing it all without being able to see or hear. It is a challenge many disabled athletes face, unless someone agrees to be their eyes and ears.
Newly formed group Achilles Brisbane pairs vision- and hearing-impaired (视觉和听觉受损的) athletes with a person who would like to guide them.
“When we go out, we’re always going out into an unknown course,” said Achilles Brisbane president Jane Britt, who is both vi sion and hearing impaired. “It’s much less frightening to have someone beside you that has full hearing to listen for you and tell you what’s there.”
Ms Cullen and Ms Britt meet up most Saturday mornings to take part in the free five-kilometre Southbank park run. Their partnership is built on trust, but Ms Britt said that it took time to develop.
Ms Britt said it took an unexpected storm for her to trust Ms Cullen completely. “There was violent rain, my glasses were broken and we were walking together,” she said. “I suddenly had to tell her I couldn’t see anything, and I was going to have to
completely trust her. From that time I knew it was going to work because she was so good about dealing with the special situation we both found ourselves in.”
Isabella Allen and her seeing-eye dog Tatum are two new additions to the Achilles programme. Ms Allen kept active by running and cycling but found it difficult to keep going as her vision became worse. After nearly giving up completely, she worked up the courage to ask Brisbane to find someone to share a boat with her.
Ms Allen said the fear of not finding anyone to row with almost stopped her from reaching out to Achilles Brisbane. “But, they found people and matched me to them,” she said. “It’s the best thing I’ve ever done.”
24. What does Paragraph 1 try to show?
A. The exercise people do to keep fit.
B. The danger of walking on a busy road.
C. The difficulty the disabled athletes face.
D. The necessity of building roads for the blind.
25. How does Jane Britt feel about going out alone?
A. Worried.
B. Relaxed.
C. Excited.
D. Bored.
26. What happened in the heavy rain according to Ms Britt?
A. She fell down on the ground.
B. She led Ms Cullen forward on the road.
C. She developed a strong sense of teamwork.
D. She began to rely on Ms Cullen as her guide.
27. What was the best thing Ms Allen has done?
A. Asking Brisbane for help.
B. Working in Brisbane.
C. Exercising non-stop.
D. Meeting Tatum.
If you could design your own school and study whatever you wanted, what would you choose to learn?
This isn’t an unlikely question for students at Monument Mountain Regional High School, who are taking part in an activity called the Independent Project. The program is a special school within the Massachusetts public high sch ool that’s completely run by students — no teachers, parents, or adults are allowed — and they’re in charge of deciding their whole curriculum (课程).
These teens’ homework and what they study in the classroom are all totally up to them. Charles Tsai, a journalist, made a 15-minute film about the project that shows the wide variety of activities different students join.
Students aren’t taking this lightly — instead of reacting irresponsibly to the freedom to design their own studies, they’re dealing with thei r own interests by writing poetry collections, learning instruments and taking flight lessons.
The program is this: On Mondays students come up with questions in relation to one of their school subjects, then they spend the rest of the week researching and coming up with possible conclusions to these questions. On Fridays, they present this information to their classmates.
“I think the more choices we have in our school, the more students we will help develop into the kind of citizens that we need,”Principal (校长) Marianne Young explains in the film.
In the video, teens express their satisfaction with the program because it holds different kinds of learners, even those who don’t always succeed in a traditional study situation.
“I have difficulty in reading and writing. School has always been a big problem for me,” one student named Sergio explains in the video. “If it were not for this program, I don’t know if I’d be graduating —I don’t know where I’d be right now. I think this has really been my savior (救星) and got me through the last two years of high school.”
28. What is the Independent Project about?
A. Various activities for students.
B. Student-centered curricula.
C. A self-designed school.
D. Teacher-free classes.
29. How does the program work?
A. Teachers work out a curriculum for students.
B. Students research topics they put forward.
C. Teachers work together with students.
D. Students serve as teachers in turn.
30. What’s Marianne Young’s attitude towards the project?
A. Curious.
B. Doubtful.
C. Uncertain.
D. Optimistic.
31. What do we know about Sergio?
A. He finds it hard to graduate.
B. He has bitter memories of high school.
C. He feels grateful to the Independent Project.
D. He performs badly in the Independent Project.
Jeffrey Hall, a teacher of Communications from the University of Kansas (KU), has used his research to define (明确) the exact amount of time necessary to make friends with someone. He’s also found how long it will take to deepen a relationship. His new study found that it takes around 50 hours of time together to go from being someone’s acquaintance (泛泛之交) to casual (感情不深的) friend. It takes about 90 hours to go from being casual friends to friends, and more than 200 hours before considering someone a close friend or best friend.
But it isn’t spending just any kind of time together that deepens a friendship —hours spent working together, for example, don’t count as much as hours spent getting to know someone by hanging out, joking around, playing video games, and doing
more playful activities. The study explains that these kinds of activities help us to form a deeper connection with someone.“We have to put that time in,” Hall
said. “You can’t make a friend without any effort (努⼒).”
The results of the study come from analysis of 355 responses to an online survey from adults who said they had moved in the last six months and were looking for new friends in their new homes. Survey participants (参与者) were asked about new relationships as well as hours spent together and activities they did. They were then asked to rate their resulting relationships according to one of four
stages: acquaintance, casual friend, friend and close friend.
The main conclusion that Hall came to is that making close friends takes serious effort. So if you want to have some best friends, you have to know that spending time with someone is the most important thing.
32. How long does it take to turn an acquaintance into a friend?
A. About 50 hours.
B. About 90 hours.
C. About 140 hours.
D. About 200 hours.
33. Wh at does the underlined part “that time” in Paragraph 2 refer to?
A. Time spent working together.
B. Time spent finding new friends.
C. Time spent helping a new friend.
D. Time spent doing fun things together.
34. Which may help deepen a friendship according to the study?
A. Trying to understand your friend’s feelings.
B. Enjoying quality time with your friend.
C. Treating a new friend like a close one.
D. Being generous to your friend.
35. What is the main purpose of the text?
A. To solve a relationship problem.
B. To introduce a teacher from KU.
C. To present the findings of a new study.
D. To discuss the importance of friendship.
第⼆节（共5⼩题；每⼩题2分，满分10分）
However, few people know that body language in the two countries can be just as different.
37 For example, an American visiting France may be surprised when a waiter brings him three cups of coffee even though he thought he only ordered two. His problem? He held up his index finger (⾷指) and his middle finger to show the number two. Since the French start counting on the thumb (拇指), however, the waiter understood that to mean three.
Hand signals are not the only difference in body language between Americans and the French. 38 An American who asks a French person for her ideas may be surprised when she reacts by frowning. Americans tend to smile a lot, especially when responding to questions. The French, on the other hand, sometimes react by pouting (撇嘴). This facial expression shows that a French person is thinking.
The French also greet each other in a different way than Americans
do. 39 Americans do not touch nearly as often when they greet each other.
40 However, an American visiting France may still need more than a dictionary to communicate with the French.
A. Americans tend to be socially open minded.
B. Most people know that they speak different languages.
C. The French never meet each other as often as Americans do.
D. Facial expressions can also be different in the two countries.
E. The difference in hand signals could lead to cultural misunderstandings.
F. French friends kiss or shake hands every time they meet or say goodbye.
G. An American will probably find the unexpected surprise quite refreshing.
第三部分：语⾔知识运⽤（共两节，满分45分）
第⼀节（共20⼩题；每⼩题1.5分，满分30分）
阅读下⾯短⽂，从短⽂后各题所给的A、B、C和D四个选项中，选出可以填⼊空⽩处的最佳选项。

You may be surprised by a bird known as the starling (椋鸟). They are small or middle-sized and 41 in Asia, Europe and Africa, where they 42 mainly fruit and insects. However, when they come together in large groups, they perform the
most 43 formations (队形) that biologists, physicists, mathema-ticians and engineers find very 44 .
Large groups of starlings are known as a murmuration. It has always been believed that flying in murmurations can 45 themselves from their natural enemies. With so many birds flying together, it’s difficult to 46 just one of them. Other 47 of the murmuration are that the starling is a very social bird. They 48 together to attract the attention of other starlings that may wish to 49 them. The large group helps each bird to keep warm. It has also been said that the birds 50 with one another about different feeding areas.
51 can really explain how starlings are able to create these wonderful flying murmurations without 52 one another. It is only with recent developments in high powered video analysis that scientists are beginning to 53 . The Woodland Trust in England explains, “Each starling 54 the movement of six birds flying beside it. They have lightning-fast reactions where they can 55 within 100 milliseconds. If one bird changes speed or direction, those around it change, too.”
The best time to see a murmuration is in either autumn or winter. The
birds 56 perform before it gets dark at night. There have to be about 200 to 300 birds to 57 a murmuration. In 1990, over six million starlings grouped together one evening in southwest England.
There is growing 58 that these wonderful sights may become a thing of the past. In recent years the starling population has fallen 59 in some areas of the world. This is because of the 60 in chemicals used in farming and a shortage of feeding sites.
41. A. recognised B. found
42. A. eat B. require
C. keep
43. A. terrible B. amusing
C. important
D. amazing
44. A. interesting B. natural
C. boring
D. awful
45. A. free B. separate
C. protect
D. remove
46. A. search B. destroy
C. trouble
D. attack
47. A. examples B. suggestions
C. explanations
D. discussions
48. A. race B. fight
C. fly
D. hunt
49. A. join B. accept
C. help
D. guide
50. A. compete B. connect
C. celebrate
D. communicate
51. A. No one B. Someone
C. Everyone
D. Anyone
52. A. depending on B. crashing into
C. waiting for
D. worrying about
53. A. predict B. understand
C. agree
D. imagine
54. A. follows B. supports
D. mixes
55. A. speed B. process
C. react
D. notice
56. A. usually B. possibly
57. A. design B. lead
C. form
D. divide
58. A. interest B. concern
C. hope
D. opposition
59. A. partly B. equally
C. smoothly
D. rapidly
60. A. success B. progress
C. change
D. increase
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。

America’s first continuously-published newspaper, the Boston
News-Letter published its first issue on April 24, 1704. John Campbell, a bookseller and postmaster of Boston, was its first editor, printing the newspaper on 61. ________ was then referred to as a half-sheet. It originally appeared on a single page, 62.
________ (print) on both sides and issued weekly. In the first issue of the
News-Letter 63. ________ was only one advertisement. In the early years of its publication, the News-Letter dealt mostly with news from London journals 64.
________ (report) English politics and the European wars. The rest of the newspaper was filled with items listing ship arrivals, political appointments, fires, accidents etc. The paper was never very 65. ________ (success). In 1722, the Boston News-Letter 66. ________ (take) over by Bartholomew Green, its printer. As its editor, Green devoted less space to overseas events and 67. ________ (much) to domestic (国内的) news than before. When Green died after about ten years as its editor, his son John Draper took charge of the News-Letter, 68. ________ was also a printer. Draper proved 69. ________ (be) a better editor and publisher. He enlarged the paper to four good-sized pages, filling it with news from Boston, other 70.
________ (town) throughout the colonies (殖民地), and from abroad.
第四部分：写作（共两节，满分35分）
第⼀节：短⽂改错（共10⼩题；每⼩题1分，满分10分）
假定英语课上⽼师要求同桌之间交换修改作⽂，请你修改你同桌写的以下作⽂。

⽂中共有10处语⾔错误，每句中最多有两处。

每处错误仅涉及⼀个单词的增加、删除或修改。

修改：在错的词下划⼀横线，并在该词下⾯写出修改后的词。

注意：1. 每处错误及其修改均仅限⼀词；2. 只允许修改10处，多者（从第11处起）不计分。

I’ve always been dreaming of visiting Chicago. Last summer I took trip there on my own, what got me thinking about the advantages of travelling alone. Something that I noticed immediately was the fact that I had the free to do what I wanted. After all, I don’t have to consider another person’s interests. While in Chicago, I got involving in a couple of workshops. During these workshops, we got the chance to talk with the local people. Days late, I went to the theatre alone and found myself having a conversation about travel with the lady sit beside me. To be honest, these conversations wouldn’t have been happened if I had travelled without a friend.
第⼆节：书⾯表达（满分25分）
假定你是学校英⽂报的通讯员，你校在上周末举办了⼀场诗歌⽐赛（poetry contest）。

请你根据所给提⽰，⽤英语为此次活动写⼀篇报道。

1. 参赛⼈员及⼈数；
2. ⽐赛内容；
3. 同学们及你的感受或评价。

注意：词数100左右。

_______________________________________________________________
_______________________________________________________________
选做题
阅读下列短⽂，从每题所给的A、B、C和D四个选项中，选出最佳选项。

A
Google Maps made some major progress in making it more accessible (可⽤的) for millions of users. It announced that its public transportation
navigation option (选
择) will now include a “wheelchair-accessible” feature (特⾊) that presents the best possible route for users in wheelchairs and with other physical disabilities. The new feature is only accessible in six major cities around the world.
If you do live in one of these cities, it’s very easy to program Google Maps to show you accessible routes. All you have to do is enter your start and end points in the app as usual, choose the public transportation option, and click (点击) “Options”. Now, you should see the “wheelchair-accessible” option; click it and go back to the route options, and you’ll see start, end, and transfer points (换乘点) that take place at stations accessible to everyone, including those who are in a wheelchair.
Google also notes that they’ve introduced other features to the app to increase accessibility. Google Maps users can now add accessibility details about restaurants, stores, and attractions to each location’s information page, where other users can check to see whether a place has a step-free entrance or wheelchair-friendly washroom. They’ve also sent Street View cameras into transfer stations and other busy areas so users can take a look at a place before going there and make sure they’ll be able to get in and out easily.
Transport for All, an organization that asks for more accessible public transportation in London, welcomed the opti on. “This is a big step forward. But the success of this new option will depend on accurate information to prevent disabled people from coming across broken lifts or inaccessible routes,” they wrote. In 2017, actor Zach Anner tried to make his way across New York City through public transportation, and found that he often couldn’t navigate his wheelchair around subway stations that were said to be accessible; the journey, which was supposed to take 28 minutes, according to Google Maps, ended up taking several hours.
1. What’s Google Maps’ new invention?
A. New means of transport.
B. Street View cameras.
D. A new photos app.
2. What is Paragraph 2 mainly about?
A. How to access the new option.
B. The features of Google Maps.
C. What wheelchair users should know.
D. The details of options in Google Maps.
3. What does Transport for All think of the invention?
A. It should be tested before coming into service.
B. It fails to guide disabled people.
C. It needs improvement.
D. It is a success.
4. How might Zach Anner feel about routes planned by Google Maps?
A. Time-saving.
B. Blocked.
C. Clear.
D. Busy.
B
The sun is up when the curtain is pulled back, and a group of strangers come in. They are talking to each other. I understand every word, I think.
They are asking me questions now. Someone is writing something; another is on a notebook computer. They are restless and dist racted. I’m asked if I have any questions for them. I lie and say no.
This was how my day usually started in hospital recovering from a cancer surgery (⼿术). And it’s how most patients in hospital began their day today during the ward round (查房).
After my surgeries were over, I decided to become a doctor.
I’m now in my final year of medicine in Sydney, and the first part of my journey from cancer patient to doctor is almost complete.
The lead doctor is running the show. They decide how the patient is greeted and who does or doesn’t get introduced. They decide what questions get asked and they choose whether to invite th e patient to ask questions. I can’t change the time of the round or slow the speed of it to make sure the patient knows who we are.
A study done at a hospital in New York City found fewer than half of patients leaving hospital knew their diagnosis (诊断). And fewer than one in five hospital patients could name the doctor in charge of their care, another study from the University of Chicago found.
A revolution is needed. And I believe the place to start should be the morning round.
We can start with small changes like giving patients notice of when the team will be at their bedside and the number of doctors present, looking for permission to begin the conversation, and providing clear introductions.
During the visit the lead doctor should sit at the patient’s l evel, someone could take notes to give to the patient, and chances to ask questions should be created. These seem like small steps. But for the person — sick, tired, confused — they are important.
5. Who are the strangers coming in to the ward?
A. Journalists.
B. Doctors.
C. Patients.
D. Visitors.
6. What does the underlined word “impotent” in Paragraph 6 probably mean?
A. Terrified.
B. Helpless.
C. Uneasy.
D. Bored.
7. What did the studies find?
A. Doctors cared little about their patients.
B. Doctors spent little time on the ward round.
C. Patients knew little about their doctors and diagnosis.
D. Patients paid little attention to their diagnosis and treatment.
8. What change does the author suggest?
A. Doctors should have good communication with patients.
B. A lively atmosphere should be created in the ward.
C. The number of doctors should be increased.
D. There should be more ward rounds.
参考答案
21-25 BADCA 26-30 DACBD
31-35 CCDBC 3 6-40 BEDFG 41-45 BADAC
46-50 DCCAD 51-55 ABBAC 56-60 ACBDD
61. what 62. printed 63. there
短⽂改错
71. ... took trip there ... trip前加a
72. ... what got me ... what → which
73. ... had the free ... free → freedom
74. ... I don’t have ... don’t→didn’t
75. ... I got involving ... involving → involved
76. ... we got the ... we → I
77. Days late, I ... late → later
78. ... sit beside me. sit → sitting
79. ... have been happened ... 去掉been
80. ... without a friend. without → with
书⾯表达
One possible version:
In order to help students learn more about poetry, our school held a poetry contest last Sunday. More than 50 students from different grades and classes gathered together, showing their works and expressing themselves. This activity was a great success and many students thought highly of it, saying that they learned a lot and developed their interest in poems.
This activity was really good for us. Not only did it bring us close to good poems, it also helped us learn from these competitors to find beauty in life.
部分解析
阅读理解
第⼀节
A篇
主题语境：⼈与⾃我——⽣活与学习
本⽂是应⽤⽂。

⽂章是作者写给学⽣们的⼀封信，分享了⾃⼰学习新闻学的经历。

21. B。

细节理解题。

根据第⼆段中的I have certainly gained quite a broad knowledge about journalism可知，在过去的⼀年中作者学到了很多新闻学的知识。

22. A。

细节理解题。

根据第三段中的I am going to San Francisco State University in the fall可知，作者这个秋季打算上⼤学。

23. D。

推理判断题。

根据第四段中的It is very unfortunate that Journalism will not be a main course next year, and I was really saddened by the news可知，作者得知新闻学将不再是主课之后很难过。

B篇
主题语境：⼈与社会——社会服务
本⽂是记叙⽂。

Achilles Brisbane组织为残障运动员匹配志愿者向导，使他们能继续进⾏训练。

24. C。

推理判断题。

根据第⼀段中的sharing a busy pathway with cyclists, runners and walkers和a challenge many disabled athletes face可知，第⼀段主要讲述了残疾⼈⾯临的困难。

25. A。

推理判断题。

根据第三段中的When we go out, we’re always going out into an unknown course和It’s much less frightening to have someone beside you that has full hearing to listen for you and tell you what’s there可知，Jane Britt很担⼼⼀个⼈出⾏。

26. D。

细节理解题。

根据倒数第三段中的I was going to have to completely trust her 可知，Britt在那场⼤⾬中开始完全信赖她
27. A。

细节理解题。

根据末段中的Ms Allen said the fear of not finding
anyone ... “But, they found people and matched me to them及倒数第⼆段中的she worked up the courage to ask Brisbane to find someone to share a boat with her可知，Allen认为⾃⼰做得最正确的事情是向Brisbane组织申请为她配对训练的⼈。

C篇
主题语境：⼈与⾃我——⽣活与学习
本⽂是说明⽂。

⽂章介绍了⼀所⾼中的独⽴项⽬，该项⽬完全由学⽣负责，他们可以根据⾃⼰的兴趣、爱好和特长制定⾃⼰的学习内容。

28. C。

细节理解题。

根据第⼀段中的If you could design your own school和第⼆段中的The program is a special school ... completely run by students可知，该项⽬是⼀个由学⽣⾃⼰设计的学校。

29. B。

细节理解题。

根据第五段中的On Mondays students come up with questions ... researching and coming up with possible conclusions to these questions可知，学⽣们提出问题并对其进⾏研究。

30. D。

推理判断题。

根据倒数第三段中的I think the more choices we have in our school, the more students we will help develop into the kind of citizens that we need
可知，校长赞成这个项⽬，对其持乐观的态度。

31. C。

推理判断题。

根据末段中的I think this has really been my savior可知，Sergio 认为该项⽬是他的救星，由此可推断，他很感激这个项⽬。

D篇
主题语境：⼈与社会——⼈际沟通
本⽂是说明⽂。

⼀项新的研究表明，交朋友和加深友谊都需要相应的时间投⼊，付出认真的努⼒。

32. C。

细节理解题。

由第⼀段中的it takes around 50 hours of time together to go from being someone’s acquaintance to casual friend. It takes about 90 hours to go from being casual friends to friends可知，把⼀个泛泛之交变成真正的朋友需要⼤约140个⼩时的相处时间。

33. D。

篇章结构题。

分析第⼆段的内容和结构可知，that time指的是朋友们在⼀起做有趣的事情的时间。

34. B。

细节理解题。

由最后⼀段可知，这项研究告诉我们，多花点时间与朋友⼀起做些有意思的事情有助于增进友谊。

35. C。

写作⽬的题。

通读全⽂可知，本⽂报道了⼀项新的研究成果，交朋友以及加深友谊都需要相应的时间投⼊。

故选C。

第⼆节
主题语境：⼈与社会——⽂化
本⽂是说明⽂。

⽂章介绍了美国与法国之间肢体语⾔的差异。

36. B。

根据设空处下⼀句However, few people know that body language in the two countries can be just as different可知，设空处与之相反，B项“多数⼈知道两国之间的区别是语⾔差异”符合语境。

37. E。

根据第三段中承上启下的句⼦Hand signals are not the only difference in body language between Americans and the French可知，第⼆段讲述的是两国之间的⼿势语差异，故E项符合此处语境。

38. D。

根据设空处后的描述可知，本段讲述了两国之间⾯部表情的差异。

39. F。

根据此空前的greet和此空后Americans do not touch nearly as often when they greet each other可知，本段主要阐述打招呼⽅式的不同，F项描述了法国⼈打招呼的⽅式，符合该处语境。

40. G。

G项中的find the unexpected surprise quite refreshing与此空后的However 和may still need构成对⽐，意为：虽然美国⼈可能发现在法国遇到的意想不到的情景很新奇有趣，但是美国⼈与法国⼈之间还是存在很⼤的⽂化差异。

语⾔知识运⽤
第⼀节
主题语境：⼈与⾃然——⾃然⽣态
本⽂是说明⽂。

作者主要介绍了椋鸟的⽣活习性、迁徙时壮观的⼤鸟群、保持队形的秘密以及它们⾯临的环境问题。

41. B。

42. A。

根据该句中的in Asia, Europe and Africa及mainly fruit and insects 可知，椋鸟被“发现（found）”⽣活在亚洲、欧洲和⾮洲，它们主要“吃（eat）”⽔果和昆⾍。

43. D。

44. A。

根据下⽂中的wonderful flying murmurations可知，椋鸟群是“令⼈惊叹的（amazing）”，⽽且⽣物学家、物理学家、数学家及⼯程师都觉得椋鸟群很“有趣（interesting）”。

45. C。

46. D。

根据该句中的their natural enemies可知，鸟群可以“保护（protect）”椋鸟不受天敌的侵扰。

椋鸟成群飞⾏的话，它们的天敌就很难只“攻击（attack）”其中的⼀只。

47. C。

48. C。

49. A。

根据本段对椋鸟成群飞⾏的习性的描述及the starling is a very social bird可知，其它关于椋鸟群的“解释（explanations）”是椋鸟是⼀种群居鸟类，它们成群地“飞（fly）”是为了吸引其它椋鸟的注意并“加⼊（join）”它们。

50. D。

根据下⽂中的different feeding areas可知，据说这种鸟还会彼此“交流（communicate）”不同的觅⾷地点。