1、大学英语四级模拟试卷 51及答案与解析 一、 Part I Writing (30 minutes) 1 For this part you are allowed 30 minutes to write A Letter of Inquiry about applying for admission to an English Course. You should write at least 120 words according to the outline given below in Chinese 假如你是某大学学生，叫王明，你从报纸 (电视、网络 )上获悉美国一所大学举办一个为海
2、外学生设计的为期三个月的英语短训班。写一封信说明你的情况并索取一份申请表。 A Letter of Inquiry 二、 Part II Reading Comprehension (Skimming and Scanning) (15 minutes) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions attached to the passage. For questions 1-7, mark： Y (for YES) if
3、the statement agrees with the information given in the passage; N (for NO) if the statement contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 2 A Cloud of Stem Cell The pressure on stem cell pioneer Woo Suk Hwang over the way he obta
4、ined human eggs for his research is intensifying-particularly in South Korea, where he had been a national hero. In the past week, several new claims have emerged that Hwang may have used eggs that were paid for, as well as eggs from junior members of his laboratory. Hwangs team, based at South Nati
5、onal University, has produced a string of landmark papers in stem cell research, including the first stem cells obtained from a cloned human embryo(胚胎 )(W. S. Hwang et al. Science 303, 1669-1674; 2004) and the first patient-matched embryonic stem cells(W. S. Hwang et al. Science 308, 1777-1783; 2005
6、). For South Korean scientist, cloning pioneer and Snuppy creator, Woo Suk Hwang, things keep going from bad to worse. Last month, he had to admit that as part of the groundbreaking stem cell research he published in 2004, one of his colleagues had paid some women for their egg donations, and that t
7、wo of the unpaid donors were Hwangs own junior researchers. Amid the moral controversy that followed, Hwang was in hospital for extreme fatigue and exhaustion. He was released earlier this week, only to find one of his former researchers on a national news broadcast claiming that the history-making
8、stem cell lines Hwang created were fake. The news broadcast was part of a multi-part investigative series by Koreas MBC-TV. Also in the broadcast, the researcher said that Hwang had told him to make up data in order to make it appear as if the South Koreans had created more stem cells, made from pat
9、ients with diseases, than they actually had. “This is something I shouldnt have done,“ said the researcher, whose face was not shown on camera and was only identified by his last name, Kim. “I had no choice but to do it.“ In a separate interview, Roh Sung Li, the doctor who had provided donated eggs
10、 to Hwangs research, said that Hwang had asked Science, the journal that published his paper on patient-specific stem cells, to withdraw the publication. A spokesperson at the journal said that they had not yet received a request to take back, but have e-mailed all 25 co-authors asking for clarifica
11、tion of the allegations(指控 ). Roh told news media that of the 11 stem cell lines created from patients with diseases, nine were fake. Whether the two remaining lines were valid, and photographed repeatedly to stand in for the other lines, is not clear. Roh also claims that after a visit to Hwang on
12、Thursday, he believes there were no stem cells at all, and that all of the colonies had died in the lab. “I heard some things that I havent been aware of when I visited Professor Hwang at his request, that there are no embryonic stem cells,“ he told MBC. These latest claim comes just 24 hours after
13、a former Hwang cooperator, Dr. Gerald Schatten of the University of Pittsburgh, charged Hwang with fabricating his data. Back in June, the two men had co-authored a paper published in Science that detailed how individual stem cell lines were created for 11 patients through cloning. When Hwangs immor
14、al deeds were uncovered last month, Schatten was already publicly distancing himself from his onetime colleague. But on Tuesday, Schatten, took the next step and asked that his name be removed from the work. His reasons? “Careful re-evaluations of published figures and tables,“ he said in his letter
15、, “along with new problematic information, now cast substantial doubts about the papers accuracy.“ Hwang has still not responded to these new accusations(指控 ), and Schatten has declined to comment further. Hwangs academic affair is the latest plot twist in a drama thats playing out in the Korean pre
16、ss. Several days after Schattens initial break with Hwang, Seouls news outlets cited a Korean government official and other sources in both Korea and the U.S., claiming that Schatten had met with Hwang in October and asked for 50% of the patent(专利权 ) on the patient-specific stem cell cloning techniq
17、ue. Schatten also reportedly asked to be named chairman of the board of the newly created World Stem Cell Hub, a research center funded jointly by the South Korean government and private interests. The South Koreans reportedly denied his requests. Despite all the negative publicity, Hwangs popularit
18、y didnt seem to be suffering too much. At home, he is enjoying emotional swells of support from thousands of women who have lined up outside his lab doors pledging their willingness to donate eggs to his research. Still, Hwang has a lot of explaining to do. He is already being investigated by his ow
19、n university. And earlier this week, eight stem cell scientists, led by Dolly cloner lan Wilmut, submitted a letter to Science, noting that “accusations made in the press about the validity(合法性 ) of the experiments published in South Korea are, in our opinion, best resolved within the scientific com
20、munity.we encourage Hwangs laboratory to cooperate with us to perform an independent test of his cell lines.“ At stake, say the scientists, is the new field of stem cell science, which holds the potential of introducing new ways to treat disease. Until the testing completed, it seems the rumors and
21、the accusations will only continue to deepen. Hopefully, once Hwang is back in the lab, the questions around in the press about his work will be answered. Unfortunately, that may take a while. Hwang is back in the hospital, this time in the mental ward. The effects of the claims on the stem cell fie
22、ld and on Hwangs research are unclear. On 15 November, after the news of Schattens separation, the Korean government laid out plans to invest 11.5 billion won in the World Stem Cell Hub led by Hwang. But it also proposed to separate the center from Seoul National University and make it an independen
23、t body. Many potential overseas cooperators have said their plans are on hold until the claims are resolved. How these events will affect Hwangs teams ability to publish is another open topic. “Its pretty clear that the editor of any journal would be on heightened alert if they received a piece of w
24、ork from them, and would probably examine it very carefully for the ethics of the work at the very least,“ says Gregory Curfman, executive editor of The New England Journal of Medicine. 2 The passage depicts the difficulty of stem cell research in South Korea. （ A） Y （ B） N （ C） NG 3 Hwangs team has
25、 published some milestone papers in stem cell research. （ A） Y （ B） N （ C） NG 4 Faced with all kinds of accusation Hwang insisted that the eggs were from donations. （ A） Y （ B） N （ C） NG 5 Doctor Roh claimed that most of the stem cell lines created from patients with diseases were fake. （ A） Y （ B）
26、N （ C） NG 6 Despite Hwang didnt react to his new accusation Schatten would still keep explaining his claim. （ A） Y （ B） N （ C） NG 7 Lots of Koreans including Korean government believe that Hwang has created genuine stem cells. （ A） Y （ B） N （ C） NG 8 The support from Korean women shows that Hwang is
27、 still respectable in his country. （ A） Y （ B） N （ C） NG 9 Scientists led by Dolly cloner lan Wilmnt advised that Hwangs data should be investigated inside the_. 10 The rumors about Hwangs research will not stop except when _. 11 Due to the impact of Hwangs academic event editors of journals would p
28、ay much more attention to the_. Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each
29、question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. （ A） It may not be warm enough. （ B） The woman can wear it all winter. （ C） It will not fit if the woman loses weight. （ D） The woman may have trouble paying fo
30、r it. （ A） Ask Johnston one more time. （ B） Ask Johnston to extend the deadline. （ C） Ask Johnston to clarify the submission date. （ D） Ask Johnston to spend more time explaining. （ A） Bob has also been mad at her recently. （ B） The man should ask Bob to apologize. （ C） Bob might not be really angry
31、 with the man. （ D） Bob will probably remain angry until the man apologizes. （ A） No one was interested in discussing politics. （ B） People avoid discussing politics. （ C） The woman is not being serious. （ D） Politics is a sensitive topic. （ A） Business courses have become popular. （ B） The school o
32、nly offers business courses. （ C） The business school has a new program. （ D） The school has just started to offer business courses. （ A） She hasnt cleaned her room, either. （ B） She left her room on time this morning. （ C） She can help the man clean up his room. （ D） She doesnt know the mess the ro
33、an have made in her room. （ A） He had to cancel his interview. （ B） Hes disappointed with his interview （ C） He shouldnt have applied for the job. （ D） He doesnt want to discuss the interview now. （ A） Wait for the video to come out. （ B） Not to see it since its not her type. （ C） See it later when
34、she is not so busy. （ D） Not to see it since she has seen it before. （ A） He lost all his data in his work. （ B） He cant find his data in the computer. （ C） He cant find the phone number of a company. （ D） His computer is crashed in the middle of his work. （ A） Take the computer to a small company.
35、（ B） Call computer company a visit. （ C） Ask help from the company suggested by the woman. （ D） Switch off his computer. （ A） He could refer to her name to Marlow. （ B） He should mention his computers name. （ C） Try again before switch off the computer. （ D） Switch off the computer. （ A） At a televi
36、sion studio. （ B） On a radio program. （ C） In a job interview. （ D） In a factory. （ A） tie thinks people are more likely to buy music than books. （ B） He believes that there is a demand for books on music. （ C） He thinks that there isnt much future for e-books. （ D） He thinks that there is a good ch
37、ance that the business will develop. （ A） The prize was worth $100, 000. （ B） It was for the best book published in electronic form. （ C） It was for the best book at the Frankfurt Book Fair. （ D） It was for the best software company. （ A） To boost book sales. （ B） To encourage publishers to publish
38、e-books. （ C） To advertise their machine. （ D） In order to advertise their software. Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question
39、, you must choose the best answer from the four choices marked A, B, C and D. （ A） Helping the needy to survive. （ B） Sharing risks of possible losses. （ C） Being compulsory in most countries. （ D） Covering differently according to different situations. （ A） To tell us that accidents may take place
40、at any time. （ B） To prove that it is wise to spend money on insurance. （ C） To prove that buying insurance is a wasted investment. （ D） To tell us that the sense of security is very important in driving. （ A） Car, retirement and life insurance. （ B） Business, poverty and health insurance. （ C） Unem
41、ployment, home and life insurance. （ D） Possessions, disability and health insurance. （ A） Separating the fire. （ B） Reducing the heat. （ C） Removing the fuel （ D） Cutting off the oxygen. （ A） Wheal it breaks out. （ B） How it comes about. （ C） What kind it is. （ D） Where it takes place. （ A） Another
42、 class of fires. （ B） Another type of extinguishers. （ C） How fires break out. （ D） How fires can be prevented. （ A） Because lions are cruel animals. （ B） Because lions are clever animals. （ C） Because lions like to take every chance to eat. （ D） Because lions like to take advantage of other animals
43、. （ A） Lions make most kills in the daytime. （ B） Males care more about eating than active killing. （ C） It doesnt take lions too much time to make a kill. （ D） Lions are curious about things happening around them. （ A） They depend on each other. （ B） They look after each other well. （ C） They enjoy
44、 each others company. （ D） They readily share what they have. （ A） Powerful Lions （ B） Lions at Work and Play （ C） Lions, Social Cats （ D） Lions, Skilled Hunters Section C Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen
45、 carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can eith
46、er use the exact words you have just heard or write down the 37 Its official that married people are healthier, or at least they think they are. An American 【 B1】 _ of over 100,000 people shows that, despite changing social 【 B2】 _ in society, there is a link between being married and being 【 B3】_.
47、One reason could be that people with physical, mental or 【 B4】 _ problems are 【 B5】 _ likely to marry in their first place, but married people also 【 B6】_ from greater support from family and friends and this 【 B7】 _ their health. Divorce and loss of a close friend or relative increase depression, a
48、s well as affecting many people 【 B8】 _. Married people are less likely than single people to smoke, drink heavily or drive after they have been drinking. 【 B9】 _. All of these reduce the chances of disease or injury. Single people, by contrast, 【 B10】 _. So it seems that the best advice is get marr
49、ied, but make sure you find the right partner. If you get it wrong, 【 B11】 _. 37 【 B1】 38 【 B2】 39 【 B3】 40 【 B4】 41 【 B5】 42 【 B6】 43 【 B7】 44 【 B8】 45 【 B9】 46 【 B10】 47 【 B11】 Section A Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choi
