1、公共英语四级-51 及答案解析(总分：88.00，做题时间：90 分钟)一、BSection Liste(总题数：0，分数：0.00)二、BPart A/B(总题数：1，分数：5.00)BRadio Program Announcement/B the day for IWisdom People Talking/I 1.time for My Favorite Discs 2.account by James Farmer of his travels by 3.usual pop music on Radio 4.interviews with live pop stars from 6
2、to 5.（分数：5.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_三、BPart B/B(总题数：1，分数：5.00)（分数：5.00）(1).What is the percentage of people who send cards to themselves on February 14？ _（分数：1.00）填空项 1:_(2).Why do some people send cards to themselves on February 14? _（分数：1.00）填空项 1:_(3).How did the 1/10 of the persons
3、get the cards on that day? _（分数：1.00）填空项 1:_(4).Which nation is the least romantic according to the passage? _（分数：1.00）填空项 1:_(5).What is the best gift for the French on February 14? _（分数：1.00）填空项 1:_四、BPart C/B(总题数：3，分数：11.00)（分数：4.00）(1).The passage is mainly concerned with _ of the United States
4、history? A. The agricultural trends of the 1950s. B. The unemployment rate in 1955. C. The general economic situation in the 1950s. D. The federal budget of 1952.（分数：1.00）A.B.C.D.(2).According to the passage, the number of unemployed people in 1955 was about A. One million B. Two million C. Three mi
5、llion D. Four million（分数：1.00）A.B.C.D.(3).It can be inferred from the passage that most people in the United States in 1955 viewed the national economy with an air of _. A. optimism B. confusion C. decision D. suspicion（分数：1.00）A.B.C.D.(4).Which of the following were LEAST satisfied with the nationa
6、l economy in the 1950s ? A. Farmers. B. Economists. C. Politicians. D. Steelworkers.（分数：1.00）A.B.C.D.（分数：3.00）(1).How long did Emily Dickinson live in the house where she was born? A. Almost all her life. B. Less than half her life. C. Until 1830. D. Before 1872.（分数：1.00）A.B.C.D.(2).Which of the fol
7、lowing is true of Emily Dickinson? A. She was not a productive poet. B. She saw many of her poems published. C. She was not a sociable person. D. She had contact only with a few poets.（分数：1.00）A.B.C.D.(3).When was Emily Dickinson widely recognized? A. After Henry James referred highly to her. B. Aft
8、er seven of her poems were published. C. After her poems became known to others. D. After she was dead for many years.（分数：1.00）A.B.C.D.（分数：4.00）(1).Whats Toms purpose of speaking to Mr. Clinton? A. Asking for housing. B. Asking for a promotion. C. Asking for a raise. D. Asking for some help for work
9、.（分数：1.00）A.B.C.D.(2).Whats Mr. Clintons comment on his work? A. He does his job enthusiastically, though he has not much efficiency. B. He didnt want to persist on his job from the beginning. C. He does his job adequately, but he doesnt do it well enough to deserve a raise. D. He should be dismisse
10、d anyway.（分数：1.00）A.B.C.D.(3).What does Mr. Clinton suggest that Tom should do? A. Take more initiative and show more enthusiasm for the job. B. Dont neglect the duty any more. C. Wait for some time patiently. D. Study more knowledge about his subject.（分数：1.00）A.B.C.D.(4).What does Tom threaten to d
11、o if he cant get what he wants? A. To shout out in front of the others. B. Not to leave the bosss office. C. To accuse the company. D. To quit his job.（分数：1.00）A.B.C.D.五、BSection Use o(总题数：1，分数：20.00)Being a dutiful father, Walt Disney used to take his small daughters to amusement parks, where he wo
12、uld wait patiently while they enjoyed the rides. As far as he was concerned, there was not U U 1 /U /Uthat was truly enjoyable about such places; the grounds were dirty, the material shabby, the parents bored. And so it is that, around 1934 or 35, the idea began to U U 2 /U /Uin his mind U U 3 /U /U
13、perhaps something could be done to bring more pleasure to children and adults U U 4 /U /U. It was a modest idea at first. When Disney brought itU U 5 /U /Uin the open in 1948 ,he was merely proposing a small amusement area U U 6 /U /Ua corner of the Burbank loteleven acres all U U 7 /U /U. Even so,
14、the plan was not modest enough for Roy, who vetoed it instantly, lecturing at U U 8 /U /Uabout loans, debts, and extravagant dreams.Walter kept dreaming, nonetheless, and adding to his first concept. There should be more U U 9 /U /Urides and merry-go-rounds, he thought; it would be nice to have shop
15、s for the parents, soda fountains and theaters for all, a horse-drawn street car, plenty of things to do and see. U U 10 /U /Uhe went, either in the United States or U U 11 /U /U, he visited parks, county fairs, circuses, carnivals, open air attractions of all kindsand, U U 12 /U /Uall, zoos. U U 13
16、 /U /U, Lilly announced that she would not travel with him U U 14 /U /Umore if it was to visit another zoo. Most of the places that he saw looked dirty and sad U U 15 /U /UDisney. The only amusement park that U U 16 /U /Uhis approval was Copenhagens Tivoli Gardens, because they were clean and cheerf
17、ul, with friendly attendants and brightly painted attractions.The more he thought about his U U 17 /U /U, the more enthusiastic Disney felt about it. Although he was not U U 18 /U /Uto the business side of such a venture, the park U U 19 /U /Umore than a moneymaking device for him. He ;vas envisioni
18、ng it as “a place for people to find happiness and knowledge. a place for parents and children to U U 20 /U /Upleasant times in one anothers company; a place for teachers and pupils to discover greater ways of understanding and education.“（分数：20.00）(1). A. so B. a lot C. much D. such（分数：1.00）A.B.C.D
19、.(2). A. form B. occur C. happen D. exist（分数：1.00）A.B.C.D.(3). A. which B. that C. what D. why（分数：1.00）A.B.C.D.(4).A. altogetherB. all C. alike D. both（分数：1.00）A.B.C.D.(5). A. in B. away C. about D. out（分数：1.00）A.B.C.D.(6). A. on B. at C. of D. in（分数：1.00）A.B.C.D.(7). A. estimated B. together C. tol
20、d D. counted（分数：1.00）A.B.C.D.(8). A. length B. least C. best D. last（分数：1.00）A.B.C.D.(9). A. of B. further C. than D. with（分数：1.00）A.B.C.D.(10). A. Where B. Wherever C. When D. Whenever（分数：1.00）A.B.C.D.(11). A. home B. abroad C. everywhere D. Canada（分数：1.00）A.B.C.D.(12). A. above B. after C. in D. a
21、t（分数：1.00）A.B.C.D.(13). A. Firstly B. Lastly C. Initially D. Eventually（分数：1.00）A.B.C.D.(14). A. no B. further C. any D. much（分数：1.00）A.B.C.D.(15). A. to B. with C. at D. for（分数：1.00）A.B.C.D.(16). A. witnessed B. showed C. saw D. met（分数：1.00）A.B.C.D.(17). A. task B. project C. activity D. assignment
22、（分数：1.00）A.B.C.D.(18). A. ignorant B. active C. aware D. blind（分数：1.00）A.B.C.D.(19). A. proved B. turned C. served D. represented（分数：1.00）A.B.C.D.(20). A. kill B. share C. win D. enjoy（分数：1.00）A.B.C.D.六、BSection Readi(总题数：0，分数：0.00)七、BPart A/B(总题数：0，分数：0.00)八、BPassage 1/B(总题数：1，分数：4.00)“All work and
23、 no play makes Jack a dull boy“ is a popular saying in the United States. Other countries have similar sayings. It is tree that all of us need recreation. We cannot work all the time if we are going to maintain good health and enjoy life. Good physical and mental health in fact enables us to work mo
24、re efficiently.Everyone has his own way of relaxing. Perhaps the most popular way is to participate in sports. There are team sports, such as basketball, baseball, and football. There are also individual sports, such as golf and swimming. In addition, hiking, fishing, skiing and mountain climbing ha
25、ve a great attraction for people who like to be outdoors, Chess, card-playing, and dancing are forms of indoor recreation enjoyed by many people.Not everyone who enjoys sporting events likes to participate in them. Many people prefer to be spectators, either by attending the games in person, watchin
26、g them on television, or listening to them on the radio. When there is an important baseball game or boxing match, it is almost impossible to get tickets. Everyone wants to attend.It doesnt matter whether we play a fast game of ping-pong, concentrate over the bridge table, or go walking through the
27、woods on a brisk autumn afternoon. It is important for everyone to relax from time to time and enjoy some form of recreation.（分数：4.00）(1).What does the saying “All work and no play makes Jack a dull boy“ really mean? A. Jack likes work, but he doesnt like to play. B. Jack is a dull boy both in work
28、and in play. C. Jack will be dull if he always works without relaxing. D. Jack likes to play, but he has to work.（分数：0.80）A.B.C.D.(2).The most popular way of relaxing is perhaps _. A. to participate in sports B. to be good spectators C. to play chess with friends D. to watch ball matches on televisi
29、on（分数：0.80）A.B.C.D.(3).What is the difference between baseball and golf? A. Both are ball games. B. Baseball is a team sport, while golf is an individual game. C. Baseball is more popular than golf. D. Baseball is more difficult than golf.（分数：0.80）A.B.C.D.(4).Which of the following is NOT true? A. D
30、ancing is a form of indoor recreation. B. Many people who enjoy sports prefer to be spectators. C. Spectators have several ways to participate in sporting events. D. Almost everyone can get a ticket for an important baseball game or boxing match.（分数：0.80）A.B.C.D.(5).What is the main idea of the pass
31、age? A. Participating in sports is a very good way of recreation. B. There are different forms of sporting events. C. Many people prefer to be spectators. D. Some people like working without relax.（分数：0.80）A.B.C.D.九、BPassage 2/B(总题数：1，分数：4.00)In 1637 the French philosopher-mathematician Rene Descart
32、es predicted that it would never be possible to make a machine that thinks as humans do. In 1950, the British mathematician and computer pioneer Alan Turing declared that one day there would be a machine that could duplicate human intelligence in every way and prove it by passing a specialized test.
33、 In this test, a computer and a human hidden from view would be asked random identical questions. If the computer were successful, the questioner would be unable to distinguish the machine from the person by the answers.Inspired by Turings theory, the first conference on AI convened at Dartmouth Col
34、lege in New Hampshire in 1956. Soon afterwards an Al laboratory was started at Massachusetts Institute of Technology by John McCarthy and Marvin Minsky, two of the nations leading AI proponents. McCarthy also invented the Al computer language, Lisp; but by the early 1990s Al itself had not been achi
35、eved. However, logic programs called expert systems allow computers to “make decisions“ by interpreting data and selecting from among alternatives. Technicians can run programs used in complex medical diagnosis, language translation, mineral exploration, and even computer design.Machinery can outper
36、form humans physically. So, too, can computers outperform mental functions in limited areasnotably in the speed of mathematical calculations. For example, the fastest computers developed are able to perform roughly 10 billion calculations per second. But making more powerful computers will probably
37、not be the way to create a machine capable of passing the Turing test. Computer programs operate according to set procedures, or logic steps, called algorithms. In addition, most computers do serial processing; operations of recognition and computation are performed one at a time. The brain works in
38、 a manner called parallel processing, performing operations simultaneously. To achieve simulated parallel processing, some supercomputers have been made with multiple processors to follow several algorithms at the same time.Critics of this approach insist that solving a computation does not indicate
39、 understanding, something a person who solved a problem would have. Human reasoning is not based solely on roles of logic. It involves perception, awareness, emotional preferences, values, evaluating experience, the ability to generalize and weigh options, and more. Some proponents of AI have, there
40、fore, suggested that computers should be patterned after the human brain, which essentially consists of a network of nerve cells.By the early 1990s, the closest approximation to Al was a special silicon chip built to behave like a human brain cell. It was modeled after the internal workings of neuro
41、ns in the human cerebral cortex. Unlike the conventional silicon chip, which works in digital mode, the new silicon chip works in analog mode, much the way a human brain cell works.（分数：4.00）(1).According to Turing, a computer has human-like intelligence in a special test if A. the computer gives bet
42、ter answers. B. the questioner falls to give identical questions. C. the questioner cant tell between the answers of a person and a computer. D. the questioner cant find the person hidden by the computer.（分数：0.80）A.B.C.D.(2).What significance did Turings theory have on the development of AI? A. It s
43、tarted the research on AI. B. It established the expert system. C. It taught technicians how to use complicated programs. D. It invented the A1 computer language.（分数：0.80）A.B.C.D.(3).In what way is the computer superior to the human brain? A. It calculates much faster. B. It is more logical. C. It d
44、oes better on the Turing test. D. It can perform several operations simultaneously.（分数：0.80）A.B.C.D.(4).Which of he following is the way that a computer does its processing? A. Recognition and computation separately. B. Recognition and computation simultaneously. C. Computation followed by checking.
45、 D. Recognition, reasoning and then computation.（分数：0.80）A.B.C.D.(5).Critics of AI would probably agree with the statement that A. logic plays the most important part in human reasoning. B. fast computation shows the ability of understanding. C. the new silicon chip is working in the way that human
46、brain works. D. reasoning is something too complicated to be duplicated by the computer.（分数：0.80）A.B.C.D.十、BPassage 3/B(总题数：1，分数：5.00)In the first year or so of Web business, most of the action has revolved around efforts to tap the consumer market. More recently，as the Web proved to be more than a fashion, companies have started to buy and sell products and services with one another. Such business-to-business sales make sense because businesspeople typically know what product theyre looking for.Nonetheless，many companies still hesitate to use the
