北京大学16春-大学英语3-第5组作业答案

谋学网 作业ID： 58797 1.Have you ever visited the Summer Palace，_ there are many beautiful halls, ridges and a huge lake?A. A. whichB. B. thatC. C. whereD. D. when2. Mr. Obama will give a speech on the current situation at the meeting _ next week in Beijing.A. A. to holdB. B. heldC. C. holdingD. D. to be held3.It was in a small village in the south _ he spent his childhood and met his life-long friendthe local schoolmaster.A. A. whereB. B. whenC. C. whichD. D. that4.The car halfway for no reason.A. A. broke offB. B. broke downC. C. broke upD. D. broke out5.The police that he committed a series of crimes in the north of the city.A. A. swelledB. B. submittedC. C. surveyedD. D. suspected6. The manager lost his just because his secretary was ten minutes late.A. A. moodB. B. temperC. C. mindD. D. passion7.We gave out a cheer when the red roof of the cottage came view.A. A. fromB. B. inC. C. beforeD. D. into8.Today Mrs Smith _ herself in white like a nurse at the garden party.A. A. woreB. B. putC. C. sentD. D. dressed9.In road rules the red light is a _ for traffic to stop.A. A. signB. B. sightC. C. siteD. D. size10.I can _ you for your rude manners but you must apologize in public.A. A. forbidB. B. forgetC. C. forecastD. D. forgive11. General Blair had been in the army _ for 35 years when he retired from the navy.A. A. serviceB. B. workC. C. jobD. D. homework12.Linda is quite different _ her sister in character：she likes friends and goes out a lot while her sister always stays alone at home.A. A. toB. B. fromC. C. atD. D. on13.Jim was absent from school for the whole week _ a bad cold.A. A. because ofB. B. in addition toC. C. according toD. D. in front of14.Some people like to _ a small sum of money in case of urgent need.A. A. deal withB. B. use upC. C. set asideD. D. take off15.Mr. Smith feels greatly _ with his sons performance in school as he is always the top of his class.A. A. disturbedB. B. worriedC. C. distressedD. D. satisfied16. 改错请在以下句子划线部分中，挑出错误的选项。 They are going to have the serviceman to be installed an electric fan in the office tomorrow. A. A. are going toB. B. haveC. C. to be installedD. D. in17.Only under special circumstances freshmen are permitted to take make-up tests. A. A. underB. B. circumstancesC. C. freshmen areD. D. to take18. Its already 5 oclock now. Dont you think its about time we are going home?A. A. ItsB. B. oclockC. C. Dont youD. D. are going19.Despite the wonderful acting and well-developed plot the three-hours movie could not hold our attention.A. A. DespiteB. B. well-developedC. C. the three-hoursD. D. hold our attention20. People appreciate to have worked with him because he has a good sense of humor.A. A. to have workedB. B. becauseC. C. a good senseD. D. humor 21. It seems like every day theres some new research about whether our favorite drinks are good for us. One day, science says a glass of red wine a day will help us live longer. The next day, maybe not. It seems journalists are pretty interested in wine research and the same might be said for coffee. Now，there has been a lot of research into whether coffee is good for our health.“The results have really been mixed,” admits Neal Freedman who led the coffee study and published his findings in a medical journal recently. “Theres been some evidence that coffee might increase the risk of certain diseases and theres also been maybe more recent evidence that coffee may protect against other diseases as well.” Freedman and his colleagues undertook the biggest study yet to look at the relationship between coffee and health. They analyzed data collected from more than 400,000 Americans ages 50 to 71 participating in the study. “We found that the coffee drinkers had a modestly lower risk of death than the non-drinkers，”he said. Heres what he means by “modestly”：those who drank at least two or three cups a day were about 10 percent or 15 percent less likely to die for any reason during the 13 years of the study. When the researchers looked at specific causes of death, coffee drinking appeared to cut the risk of dying from heart disease, lung disease, injuries, accidents and infections. Now, Freedman stressed that the study doesnt prove coffee can make people live longer. A study like this can never prove a cause-and-effect relationship. All it can really do is to point researchers in the right direction for further investigation. And even if it turns out that coffee is really good for you, scientists have no idea why.According to the first paragraph, reporters would like to know the research findings of _.单选题A. A. teaB. B. beerC. C. alcoholD. D. coffeeAccording to the passage, which of the following is TRUE?单选题A. A. Freedman and his colleagues hired 400,000 Americans to collect data.B. B. About four hundred thousand Americans worked for Freedmans team full time for 13 years.C. C. People who took part in Freedmans research are about 50 to 70 years old.D. D. People who are 50 to 70 years old seldom drink coffee.According to the author, scientists _.单选题A. A. have already proved that coffee is good for human healthB. B. have a long way to go before they find a way to study coffeeC. C. have avoided the cause-and-effect approach to study coffeeD. D. are still unable to figure out why coffee is good for usThe word “mixed” in the first paragraph means “_”.单选题A. A. both good and badB. B. put togetherC. C. both sharp and softD. D. confusedWhich of the following is an appropriate title for this passage?单选题A. A. Can Beer Help You Live Longer?B. B. Can Coffee Help You Live Longer?C. C. Can Wine Help You Live Longer?D. D. Can Tea Help You Live Longer?22.请阅读以下文章，回答文章后的五个小题。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 that 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. 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 lightning 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 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 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 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 ArcticB. B. How to Protect the EnvironmentC. C. The Arctic Ts Home to Polar BearsD. D. Polar Bears in DangerWhere 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 closest in meaning to_单选题A. A. adultsB. B. babiesC. C. huntersD. 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 their 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 International?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.23.阅读文章，根据文意选择最佳选项。 By the time I finished high school, my interest in animals had grown, and I enrolled at a university to study biology. I learned soon enough that studying animals （1） this level was not in the animals best interests. I remember one midterm exam in （2） each student was handed a large, freshly-killed frog and instructed to dissect (解剖)and mark a set of body parts. I looked at the （3） frog in front of me and was saddened that her life was taken away for such a slight （4） . A year later, in the same lab （5） I dissected the frog, I performed a small act of animal liberation. We were experimenting on fruit flies, and it was time to record the distribution of characteristics in their next generation. Flies were （6） in small plastic bottles. Counting the number of flies with white or red eyes required first exposing them to ether (乙醚) so that they could not move. The flies were then spread onto a piece of white paper （7） and counted. When the data collection was complete, the flies had no further use, and our instructions were to （8） them into a small glass dish of oil at the center of each desk, which was to be their final resting place. Once my little pile of flies had been counted, I pushed them off the edge of the paper. As we recorded our data, I kept one eye （9） them. Within minutes the pile was humming (嗡嗡叫) as tiny legs and wings beat their way out of the ether fog. I was extremely excited as they took flight. That was my first （10） in refusing to conduct scientific research that treated nonhuman life in a cruel way.（1）单选题A. A. atB. B. withC. C. forD. D. off（2）单选题A. A. whatB. B. thatC. C. whereD. D. which（3）单选题A. A. aliveB. B. deadC. C. livingD. D. wounded（4）单选题A. A. r