1、大学英语三级 A 级-49 及答案解析(总分：100.00，做题时间：90 分钟)一、Reading Comprehensio(总题数：5，分数：100.00)Do you know how to use a mobile phone without being rude to the people around you? Talking during a performance irritates (激怒) people. If you are expecting an emergency call, sit near the exit doors and set your phone to
2、 vibrate (振动). When your mobile phone vibrates, you can leave quietly and let the others enjoy the performance. Think twice before using mobile phones in elevators, museums, churches or other indoor public placesespecially enclosed spaces. Would you want to listen to someone“s conversation in these
3、places? Worse yet, how would you feel if a mobile phone rang suddenly during a funeral! It happens more often than you think. Avoid these embarrassing situations by making sure your mobile phone is switched off. When eating at a restaurant with friends, don“t place your mobile phone on the table. Th
4、is conveys the message that your phone calls are more important than those around you. Mobile phones have sensitive microphones that allow you to speak at the volume you would on a regular phone. This enables you to speak quietly so that others won“t hear the details of your conversations. If you ar
5、e calling from a noisy area, use your hand to direct your voice into the microphone. Many people believe that they can“t live without their mobile phone. Owning a mobile phone definitely makes life more convenient, but limit your conversations to urgent ones and save the personal calls until you are
6、 at home.（分数：20.00）(1).What should you do when you need to answer a phone call during a performance?（分数：4.00）A.Call back after the performance.B.Answer it near the exit door.C.Talk outside the exit door.D.Speak in a low voice.(2).Putting your mobile phone on a restaurant table may make your friends
7、think _.（分数：4.00）A.you prefer to talk to your friends at the tableB.you value your calls more than your friendsC.you are enjoying the company of your friendsD.you are polite and considerate of your friends(3).When you are calling in a noisy area, you are advised to _.（分数：4.00）A.use a more sensitive
8、microphoneB.shout loudly into your microphoneC.go away quietly to continue the phone callD.use your hand to help speak into the phone(4).The author implies that the use of mobile phones in such places as museums should be _.（分数：4.00）A.limitedB.expectedC.forbiddenD.recommended(5).Which of the followi
9、ng is true according to the passage?（分数：4.00）A.You should limit your mobile phone calls to personal affairs.B.You should speak quietly into your phone while in a church.C.You are supposed to turn off your mobile phone at a funeral.D.You are supposed to use your mobile phone as much as possible.When
10、a rare disease ALD threatened to kill the four-year-old boy Lorenzo, his parents refused to give up hope. Doctors explained that there was no cure for ALD, and that he would probably die within three years. But Lorenzo“s parents set out to prove the doctors wrong. The parents devoted themselves to k
11、eeping their son alive and searching for a cure. But doctors and the families of other ALD patients often refused to take them seriously. They thought the efforts to find a cure were a waste of time, and drug companies weren“t interested in supporting research into such a rare disease. However, the
12、parents still refused to give up and spent every available hour in medical libraries and talking to anyone who would help. Through trial and error (反复实验), they finally created a cure from ingredients (调料) commonly found in the kitchen. The cure, named “Lorenzo“s Oil“, saved the boy“s life. Despite t
13、he good results, scientists and doctors remained unconvinced. They said there was no real evidence that the oil worked and that the treatment was just a theory. As a result, some families with ALD children were reluctant to try it. Finally, the boy“s father organized an international study to test t
14、he oil. After ten years of trials, the answer is: the oil keeps ALD children healthy.（分数：20.00）(1).Doctors said that Lorenzo might die within three years because _.（分数：4.00）A.they had never treated the disease beforeB.Lorenzo was too young to be curedC.no cure had been found for ALDD.ALD was a rare
15、disease(2).The families of other ALD patients thought that _.（分数：4.00）A.the research for the new cure would cost too much moneyB.the efforts of Lorenzo“s parents were a waste of timeC.Lorenzos parents would succeed in finding a cureD.Lorenzos oil was a real cure for ALD(3).Scientists and doctors bel
16、ieved that Lorenzos Oil _.（分数：4.00）A.was really effectiveB.was a success storyC.only worked in theoryD.would save the boy“s life(4).Lorenzo“s father organized an international study to _.（分数：4.00）A.test Lorenzo“s OilB.get financial supportC.find a cure for the diseaseD.introduce the cure worldwide(5
17、).From the passage we can conclude that _.（分数：4.00）A.doctors remain doubtful of the effectiveness of the cureB.many ALD patients still refuse to use the oilC.various cures have been found for ALDD.the oil really works as a cure for ALDFifteen years ago, I entered the Boston Globe, which was a temple
18、 to me then. It wasn“t easy getting hired. But once you were there, I found, you were in. Globe jobs were for life-guaranteed until retirement. For 15 years I had prospered theremoving from an ordinary reporter to foreign correspondent and finally to senior editor. I would have a lifetime of securit
19、y if I struck with it. However, I had made a decision to leave. I entered my boss“s office. Would he rage? I wondered. He had a famous temper. “Matt, we have to have a talk,“ I began awkwardly. “I came to the Globe when I was 24. Now I“m 40. There“s a lot I want to do in life. I“m resigning.“ “To an
20、other paper?“ he asked. I reached into my coat pocket, but didn“t say anything. I handed him a letter that explained everything. It said that I was leaving to start a new media company. We were at a rare turning point in history. I wanted to be directly engaged in the change. “I“m glad for you,“ he
21、said, quite out of my expectation. “I just came from a board of directors meeting and it was 75 percent discouraging news. Some of that we can deal with. But much of it we can“t,“ he went on. “I wish you all the luck in the world,“ he concluded. “And if it doesn“t work out, remember, your star is al
22、ways high here.“ Then I went out of his office, walking through the newsroom for more goodbyes. Everybody was saying congratulations. Everybodyeven though I“d be risking all on an unfamiliar venture: all the financial security I had carefully built up. Later, I had a final talk with Bill Taylor, cha
23、irman and publisher of the Boston Globe. He had turned the Globe into a billion-dollar property. “I“m resigning, Bill,“ I said. He listened while I gave him the story. He wasn“t looking angry or dismayed either. After a pause, he said, “Golly, I wish I were in your shoes.“（分数：20.00）(1).From the pass
24、age we know that the Globe is a famous _.（分数：4.00）A.newspaperB.magazineC.templeD.church(2).If the writer stayed with the Globe（分数：4.00）A.he would be able to realize his lifetime dreamsB.he would let his long-cherished dreams fade awayC.he would never have to worry about his future lifeD.he would nev
25、er be allowed to develop his ambitions(3).The author wanted to resign because（分数：4.00）A.he had serious trouble with his bossB.he got underpaid at his job for the GlobeC.he wanted to be engaged in the new media industryD.he had found a better paid job in a publishing house(4).When the author decided
26、to resign the Globe was faced with _.（分数：4.00）A.a trouble with its staff membersB.a shortage of qualified reportersC.an unfavorable business situationD.an uncontrollable business situation(5).By saying “I wish I were in your shoes.“ (Para. 3) Bill Taylor meant that _.（分数：4.00）A.the author was to fai
27、lB.the author was stupidC.he would do the same if possibleD.he would reject the author“s requestDo you find it very difficult and painful to get up in the morning? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle. During the
28、hours when you labor through your work you may say that you“re “hot“. That“s true. The time of day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has disco
29、vered why this is so, but it leads to such familiar monologues as: “Get up, Peter! You“ll be late for work again!“ The possible explanation to the trouble is that Peter is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energ
30、y cycles mean, and which cycle each member of the family has. You can“t change your energy cycle, but you can learn to make your life fit it better. Habit can help, Dr. Kleitman believes. Maybe you“re sleepy in the evening but feel you must stay up late anyway. Counteract your cycle to some extent b
31、y habitually staying up later than you want to. If your energy is low in the morning, but you have an important job to do early in the day, rise before your usual hour. This won“t change your cycle, but you“ll get up steam and work better at your low point. Get off to a slow start which saves your e
32、nergy. Get up with a leisurely yawn and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible, do routine work in the afternoon and save requiring more energy or concen
33、tration for your sharper hours.（分数：20.00）(1).If a person finds getting up early a problem, most probably _.（分数：4.00）A.he is a lazy personB.he refuses to follow his own energy cycleC.he is not sure when his energy is lowD.he is at his peak in the afternoon or evening(2).Which of the following may lea
34、d to family quarrels according to the passage?（分数：4.00）A.Unawareness of energy cycles.B.Familiar monologues.C.A change in a family member“s energy cycle.D.Attempts to control the energy cycle of other family members.(3).If one wants to work efficiently at his low point in the morning, he should _.（分
35、数：4.00）A.change his energy cycleB.overcome his lazinessC.get up earlier than usualD.go to bed earlier(4).You are advised to rise with a yawn and stretch because it will _.（分数：4.00）A.help to keep your energy for the day“s workB.help you to control your temper early in the dayC.enable you to concentra
36、te on your routine workD.keep your energy cycle under control all day(5).Which of the following statements is NOT true?（分数：4.00）A.Getting off to work with a minimum effort helps save one“s energy.B.Dr. Kletman explains why people reach their peaks at different hours of the day.C.Habit helps a person
37、 adapt to his own energy cycle.D.Children have energy cycles too.There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the pro
38、blem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the enti
39、re earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil) is creating a “greenhouse effect“conserving heat reflected from the earth and raising the world“s average tempe
40、rature. If this view is correct and the world“s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water. Another view, less widely held, is that increasing particular matter in the atmosphere is blocki
41、ng sunlight and lowering the earth“s temperaturea result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of the
42、se conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies wilt offset each other and the world“s temperature will stay about the same as it is now. Driven
43、by economic profits, people neglect the damage on our environment caused by the “advanced civilization“. Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?（分数：20.00）(1).As pointed out at the beginning of the passage, people used to t
44、hink that air pollution _.（分数：4.00）A.cause widespread damage in the countrysideB.affected the entire eastern half of the United StatesC.had damaged effect on healthD.existed merely in urban and industries areas(2).As to the greenhouse effect, the author_.（分数：4.00）A.shares the same view with the scie
45、ntistB.is uncertain of its occurrenceC.rejects it as being ungroundedD.thinks that it will destroy the world soon(3).The word “offset“ in the second paragraph could be replaced by _.（分数：4.00）A.slip intoB.make up forC.set upD.catch up with(4).It can be concluded that _.（分数：4.00）A.raising the world“s
46、temperature only a few degrees would not do much harm to life on earthB.lowering the world“s temperature merely a few degrees would lead major farming areas to disasterC.almost no temperature variations have occurred over the past decadeD.the world“s temperature will remain constant in the years to
47、come(5).This passage is primarily about _.（分数：4.00）A.the greenhouse effectB.the burning of fossil fuelsC.the potential effect of air pollutionD.the likelihood of a new ice age大学英语三级 A 级-49 答案解析(总分：100.00，做题时间：90 分钟)一、Reading Comprehensio(总题数：5，分数：100.00)Do you know how to use a mobile phone without
48、being rude to the people around you? Talking during a performance irritates (激怒) people. If you are expecting an emergency call, sit near the exit doors and set your phone to vibrate (振动). When your mobile phone vibrates, you can leave quietly and let the others enjoy the performance. Think twice be
49、fore using mobile phones in elevators, museums, churches or other indoor public placesespecially enclosed spaces. Would you want to listen to someone“s conversation in these places? Worse yet, how would you feel if a mobile phone rang suddenly during a funeral! It happens more often than you think. Avoid these embarrassing situations by making sure your mobile phone is switched off. When eating at a restaurant with friends, don“t place your mobile phone on the table. This conveys the message th
