北大15年秋英语3作业5答案.docx

1、北大15年秋英语3作业5答案 作业ID： 77004 1. 鼓励独立完成作业，严禁抄袭。词汇与结构 Please give Jim the schedule for tomorrows conference when he back. He is to chair the conference. A. A. will come B. B. come C. C. comes D. D. came 2. five minutes earlier, you would not have missed the last train for Shanghai, but you were late. A.

2、 A. Had you come B. B. Do you come C. C. Did you come D. D. Should you come 3.After he worked out the solution, appeared a smile on his face. A. A. it B. B. here C. C. what D. D. there 4. the former presidents supporters went out in streets to express their anger and dissatisfaction. A. A. A small a

3、mount of B. B. A large number of C. C. A little bit of D. D. A great deal of 5.To be honest, todays dinner was just so-so. It wasnt such a good one _ promised by the boss. A. A. that B. B. which C. C. as D. D. what 6.So many people _ the meeting had to be put off. A. A. being absent B. B. to be abse

4、nt C. C. were absent D. D. had been absent 7.We often advise him not to drink more is good for his health. A. A. as B. B. that C. C. than D. D. but 8.Did Charles vote in the last election? No, he wasnt . A. A. enough old then B. B. then enough old C. C. old then enough D. D. old enough then 9.By no

5、means look down on those who are less lucky in life than we are. A. A. we should B. B. should we C. C. we should not D. D. should we not 10.He didnt feel like that day so he stayed indoors reading. A. A. working B. B. works C. C. to work D. D. worked 11.No sooner had we started on the road it began

6、to rain. A. A. when B. B. than C. C. then D. D. whenever 12.He decided to go for a sailing holiday the fact that he was usually seasick (晕船). A. A. because of B. B. in spite of C. C. in case of D. D. as a result of 13.What you do in your spare time is your own _ . However it should not be harmful to

7、 others. A. A. business B. B. purchase C. C. bargain D. D. sale 14.As a gardener, Jim has to water the flowers and the grass in the garden every morning. A. A. trim B. B. improve C. C. refine D. D. repair 15.The firemen are still the small fires started by the plane crash. A. A. taking off B. B. set

8、ting aside C. C. getting along with D. D. putting out 16.改错请在以下句子划线部分中，挑出错误的选项。 The sun gives off light and warmth, that makes it possible for plants to grow. A. A. gives off B. B. that C. C. it D. D. for 17.Sand painting has also called dry or earth painting and is practiced byseveral American Indi

9、an artists. A. A. has also called B. B. and C. C. is practiced D. D. several American Indian artists 18.Humans, like many other animals, are warm-blooded with a fairly constantly body temperature. A. A. Humans B. B. like C. C. with D. D. fairly constantly 19.Now that the stress of examinations and i

10、nterviews are over, we can all relax for a while. A. A. Now that B. B. are C. C. all D. D. relax 20.The tallest of the twins went to search for the missing jewels, the picture of which you saw in todays newspaper. A. A. tallest B. B. search for C. C. the picture of D. D. which - 21. 请阅读以下文章，回答文章后的五个

11、小题。每个小题只有一个最佳选项。 The top of the world is a wonderland. In winter, the temperature often falls to -30F and the sun never rises. The ocean is surrounded by frozen ground. There are few people or trees, but to polar bears, the Arctic(北极)is home. Polar bears have thick fur, big paws and other features t

12、hat make them well prepared for life in their tough environment. In fact, they need the Arctic sea ice for survival. But climate change is causing larger and larger areas of summer sea ice to melt (融化). Experts say that if warming patterns continue, the Arctic could be free of summer sea ice by 2050

13、. That may cause two-thirds of the worlds 20,000 polar bears to be gone by then too.Polar bears cant survive for long on land. Seals are their main source of food. The only place where polar bears can hunt seals is on the ice. (79) Although these bears are strong swimmers, they are no match for ligh

14、tning swift seals in the water. A polar bear has brilliantly clever strategies to overcome this disadvantage. In winter the bear waits motionless beside a seals breathing hole, which is a narrow tunnel through the ice. Often many hours pass before the seal comes up for air and the bear kills it with

15、 a powerful blow of its paw. In summer, the polar bears that live on land eat very little and wait for the sea ice to return.With the sea ice forming later in the year and melting earlier, polar bears do not have enough opportunity to hunt and eat. Less sea ice makes it harder for the bears to catch

16、 the seals. The bears must swim longer distances between ice packs(大片浮冰), and they cant always make it. The ice is also getting thinner. These conditions can cause polar-bear cabs to become separated from their mothers, who provide them with food.Steven Amstrup is the chief scientist of Polar Bears

17、International. The group aims to save the bears and their home. The more people who see polar bears and understand their difficult situation, the better the chance well alter our warming path in time to save them, he says. Which is the best title for the passage? 单选题 A. A. Climate Change in the Arct

18、ic B. B. How to Protect the Environment C. C. The Arctic Ts Home to Polar Bears D. D. Polar Bears in Danger Where do polar bears usually hunt seals? 单选题 A. A. On land. B. B. In open water. C. C. In openings in the sea ice. D. D. At the bottom of the sea. The word cubs in the fourth paragraph is clos

19、est in meaning to_ 单选题 A. A. adults B. B. babies C. C. hunters D. D. enemies According to the passage, which of the following statements is TRUE? 单选题 A. A. Starving polar bears are increasingly coming into villages, where they may be killed either for food or safety. B. B. Polar bears can spend thei

20、r entire lives on land if the sea ice melts completely. C. C. Two-thirds of the worlds polar bears may disappear by 2050 as global warming continues. D. D. The growing distance between ice packs is not a problem for polar bears, because they are excellent swimmers. Whats the mission of Polar Bears I

21、nternational? 单选题 A. A. Saving energy. B. B. Conducting scientific research. C. C. Seeking international cooperation. D. D. Saving polar bears and their home. - 22.When were learning a foreign language, making sense of what we hear is the first step toward fluency. It sounds obvious, but until recen

22、tly, we didnt know much about how listening works. New research demonstrates that effective listening involves more than simply hearing the words that float past our ears. Rather, its an active process of receiving information and making meaning. This kind of engaged listening is a skill thats as cr

23、itical for learning a range of subjects at school and work as it is for learning to understand a foreign tongue. Studies of skilled language learners have identified specific listening strategies that lead to superior comprehension. Last year, for example, University of Ottawa researcher Larry Vande

24、rgrift published his study of 106 undergraduates who were learning French as a second language. Half of the students were taught in a conventional fashion, listening to and practicing texts spoken aloud. The other half, possessing the same initial (最初的) skill level and taught by the same teacher, we

25、re given detailed instruction on how to listen. It mined out that the second group “significantly outperformed”(胜过) the first one on a test of comprehension. So what are these listening strategies? Skilled learners go into a listening class with a sense of what they want to get out of it. They set a

26、 goal for their listening and they generate predictions about what the speaker will say. Before the talking begins, they mentally review what they already know about the subject, and form an intention to “listen out for” whats important or relevant. Once they begin listening, these learners maintain

27、 their focus; if their attention wanders, they bring it back to the words being spoken. They dont allow themselves to be thrown off by confusing or unfamiliar details. Instead, they take note of what they dont understand and make inferences about what those things might mean, based on other clues av

28、ailable to them: their previous knowledge of the subject, the context (语境) of the talk, the identity of the speaker, and so on. What is the main idea of this passage? 单选题 A. A. Effective listening means hearing the words that float past our ears. B. B. Developing your listening skills is the first step toward developing fluency. C. C. Skilled listeners use specific strategies to get the most out of what they hear. D. D. Listening is one of the most powerful tools we have to gain information. What does Vandergrifts research show? 单选题 A. A. Learners who adopt specif