大学英语四级分类模拟题493及答案解析.doc

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1、大学英语四级分类模拟题 493 及答案解析(总分：70.00，做题时间：90 分钟)一、Part Writing(总题数：1，分数：20.00)1.For this part, you are allowed 30 minutes to write a short essay on Facing Setbacks in a Positive Way by referring to the saying “ Life has to have cracks in it so that the sun can shine through. “ You can cite examples to ill

2、ustrate your point and then explain how you can develop your ability to face failure properly. You should write at least 120 words but no more than 180 words. （分数：20.00）_二、Part Reading Compr(总题数：0，分数：0.00)四、Passage One(总题数：1，分数：10.00)Some fish can swim in water below 0, low enough to freeze the bloo

3、d of most creatures. However, some fish and insects can stay alive in the freezing water. One key to survival is a special protein in the fish“s blood. The chemical is called the Antifreeze Protein, otherwise known as AFP and is commonly found in fish that live in cold waters. What does AFP do in th

4、ese fish? First, we need to understand what happens when water freezes. When the temperature of the water drops below-1.0, tiny particles of ice start forming in the water. Each particle becomes larger and then sticks to other particles, forming blocks of ice. Fish take in this water and tiny partic

5、les of ice also form inside a fish“s body. However, the AFP in the blood of the fish surrounds these particles, preventing them from sticking together to form bigger pieces of ice. The application of AFP is promising. For example, AFP can be used to alter the taste and texture of ice-cream. It can a

6、lso be used to store meat and vegetables more effectively by protecting food products from the formation of ice. Another application is in medical field, as AFP can help preserve organs for transplantation without freezing them. Scientists have known about AFP for more than 30 years, yet few of the

7、technologies that use the AFP exist today. The process of getting the necessary amount of AFP from fish to make products was only recently discovered. Some companies in the United States and Canada have already made products using AFP, but they have yet to become popular. Although some researchers i

8、n Japan discovered that some local fish contained AFP and succeeded in creating AFP in the laboratory, more research is necessary. AFP tests will continue for these fish out of the water.（分数：10.00）(1).The Antifreeze Protein _.（分数：2.00）A.is a kind of protein that many fish have stored in their bodies

9、B.is found in certain fish that live in extremely cold waterC.increases the freezing process of water in the oceanD.is the key to finding the location of fish in cold regions(2).How does AFP work?（分数：2.00）A.It covers the small ice particles so that they remain separated from each other.B.It turns ic

10、e back into water by breaking down ice piece by piece.C.It allows the fish to find places in the ocean that have warmer temperatures.D.It forms a protective layer around the fish“s body, keeping it warmer.(3).Why is AFP not widely used?（分数：2.00）A.It is only found in the blood offish that lives in co

11、lder seas.B.The technology to utilize AFP has yet to be improved upon.C.The protein will not be safe for another 30 years.D.Countries such as Canada and Japan want to do more research first.(4).What can AFP possibly do in the future?（分数：2.00）A.Make fresh fruits and vegetables taste better.B.Protect

12、dried meat from being damaged by ice.C.Keep meat and vegetables from going bad.D.Help doctors freeze organs for transplantation.(5).Which of the following statements is true?（分数：2.00）A.AFP was discovered more than three centuries ago.B.Few scientists are interested in continuing research on AFP.C.AF

13、P can raise the temperature of any liquid.D.Scientists are thinking of a variety of ways to use AFP.五、Passage Two(总题数：1，分数：20.00)Forget Brother, Can You Spare a Dime? The theme song of this recession might well be “Mother, Can You Write a Check?“ The distressing economy has resulted in increasing nu

14、mbers of parents and grandparents helping out their strapped adult children and grandkids with home down payments, credit-card bailouts (紧急财政援助), and spare cashoften at the same time as parents are trying to confront new retirement budgets. “We are seeing a ton of this,“ says Ross Levin, an Edina, M

15、inn., financial adviser. “Sometimes it“s a great idea and sometimes it is not. You have to make sure you put on your own oxygen mask first.“ Some 62 percent of visitors to G have helped their kids financially in the past year, with 70 percent of that group handing over cash to help their adult child

16、ren and grandchildren with daily expenses, says the site“s CEO, Jerry Shereshewsky. Another popular category is housing; in the last year many parents have coughed up down payments to help their kids get into homes while the $8,000 first-time home buyer“s credit was in effect. Then there“s the debt-

17、bailout situation. A survey recently conducted by Creditcards. com for Newsweek found that 42 percent of folks with adult children have helped them pay off car loans, credit cards, medical bills, and more. None of this is surprising to Shereshewsky, who sees the trend as a natural result of changing

18、 families and the distribution of wealth. “This is where all the money isand it“s where the money is, despite the fact that we“ve had this meltdown.“ In general, the baby-boom generation is far wealthier than their children are, and has a lower unemployment rate than 20-somethings. He says that the

19、vast majority of multi-generation households now involve adult children (and sometimes their children) moving in with aging parents. Baby-boom parents generally aspire to helping their kids and their grandchildren and don“t want to wait until they are dead to do it. “You should give while you“re you

20、ng enough to enjoy the fruits of what you“re doing,“ says Shereshewsky, who is personally considering getting a reverse mortgage on his home when it comes time to help his 20-something kids with home purchases.（分数：20.00）(1).According to the passage, people are regarded as “strapped“ if they are _.（分

21、数：4.00）A.jobless in the recessionB.in financial difficultiesC.dependent on their parentsD.troubled by credit card debt(2).Ross Levin thinks that sometimes, it is not a great idea that _.（分数：4.00）A.parents have confronted new retirement budgetB.adult children disregard parents“ difficultiesC.adult ch

22、ildren spend more than they earnD.parents help out their adult children(3).With the first-time home buyer“s credit, _.（分数：4.00）A.children did not have to turn to parents for helpB.children found it easier to deal with down paymentC.parents still had to help pay for the down paymentD.parents felt rel

23、ieved from expense on housing(4).What do we know about the people of the baby-boom generation?（分数：4.00）A.Most of them prefer to live with their children.B.Most of them become parents in their twenties.C.They have a higher employment rate than their kids.D.They are willing to take care of their aging

24、 parents.(5).Shereshewsky is most likely to agree that _.（分数：4.00）A.parents should enjoy their own livesB.young people should help their parentsC.young people should be independentD.parents should help out their adult kids六、Part Translation(总题数：1，分数：20.00)2.下午茶中国饮茶的传统可以追溯到公元前 3000 多年，但“下午茶”的概念却是到 17

25、 世纪中叶 (the mid 17th century)才在英国出现的。当时那里时兴的晚餐时间是晚上 8 点，所以一位 公爵夫人 (Duchess)养成了在下午 4 点约朋友吃糕点的习惯。很快下午茶成为当时的社会潮流。随着东西方文化交流的加深，这个英国传统逐渐进入中国。如今，下午茶在国内日渐流行起来，尤其是在广东和福建地区。 （分数：20.00）_大学英语四级分类模拟题 493 答案解析(总分：70.00，做题时间：90 分钟)一、Part Writing(总题数：1，分数：20.00)1.For this part, you are allowed 30 minutes to write a

26、 short essay on Facing Setbacks in a Positive Way by referring to the saying “ Life has to have cracks in it so that the sun can shine through. “ You can cite examples to illustrate your point and then explain how you can develop your ability to face failure properly. You should write at least 120 w

27、ords but no more than 180 words. （分数：20.00）_正确答案：()解析：参考范文 As the saying goes, “Life has to have cracks in it so that the sun can shine through.“ Everyone wishes to have things go their way. Yet the journey through life is not always the case and we should face all the setbacks positively. Twists an

28、d turns are part of life and setbacks often occur. No one can avoid these unexpected changes in our daily lives. However, failure may be a route toward success. This causes us to reflect on what has happened, face it positively and as a result we build up and accumulate experience. Jack Ma, for inst

29、ance, one of the most prestigious entrepreneurs in China, experienced many failures in starting his own business before he made Alibaba one of the Chinese Internet giants. In general, it is failure that encourages us to work harder and eventually leads to success. Twists and turns in life are unavoi

30、dable and are not always bad. We should have a more optimistic view on life and try to make the most of it, learning from the twists and turns along the way.二、Part Reading Compr(总题数：0，分数：0.00)四、Passage One(总题数：1，分数：10.00)Some fish can swim in water below 0, low enough to freeze the blood of most cre

31、atures. However, some fish and insects can stay alive in the freezing water. One key to survival is a special protein in the fish“s blood. The chemical is called the Antifreeze Protein, otherwise known as AFP and is commonly found in fish that live in cold waters. What does AFP do in these fish? Fir

32、st, we need to understand what happens when water freezes. When the temperature of the water drops below-1.0, tiny particles of ice start forming in the water. Each particle becomes larger and then sticks to other particles, forming blocks of ice. Fish take in this water and tiny particles of ice al

33、so form inside a fish“s body. However, the AFP in the blood of the fish surrounds these particles, preventing them from sticking together to form bigger pieces of ice. The application of AFP is promising. For example, AFP can be used to alter the taste and texture of ice-cream. It can also be used t

34、o store meat and vegetables more effectively by protecting food products from the formation of ice. Another application is in medical field, as AFP can help preserve organs for transplantation without freezing them. Scientists have known about AFP for more than 30 years, yet few of the technologies

35、that use the AFP exist today. The process of getting the necessary amount of AFP from fish to make products was only recently discovered. Some companies in the United States and Canada have already made products using AFP, but they have yet to become popular. Although some researchers in Japan disco

36、vered that some local fish contained AFP and succeeded in creating AFP in the laboratory, more research is necessary. AFP tests will continue for these fish out of the water.（分数：10.00）(1).The Antifreeze Protein _.（分数：2.00）A.is a kind of protein that many fish have stored in their bodiesB.is found in

37、 certain fish that live in extremely cold water C.increases the freezing process of water in the oceanD.is the key to finding the location of fish in cold regions解析：解析 细节题。文章第一段最后一句指出 known as AFP and is commonly found in fish that live in cold waters，由此可知答案为 B。(2).How does AFP work?（分数：2.00）A.It co

38、vers the small ice particles so that they remain separated from each other. B.It turns ice back into water by breaking down ice piece by piece.C.It allows the fish to find places in the ocean that have warmer temperatures.D.It forms a protective layer around the fish“s body, keeping it warmer.解析：解析

39、细节题。文章第二段最后指出 the AFP in the blood of the fish surrounds these particles, preventing them from sticking together to form bigger pieces of ice，选项 A 表述与原文接近，故选 A。(3).Why is AFP not widely used?（分数：2.00）A.It is only found in the blood offish that lives in colder seas.B.The technology to utilize AFP has

40、 yet to be improved upon. C.The protein will not be safe for another 30 years.D.Countries such as Canada and Japan want to do more research first.解析：解析 细节题。短文第三段中间指出 yet few of the technologies that use the AFP exist today 即现在能利用 AFP 的技术还很少。故选项 B 正确。(4).What can AFP possibly do in the future?（分数：2.0

41、0）A.Make fresh fruits and vegetables taste better.B.Protect dried meat from being damaged by ice.C.Keep meat and vegetables from going bad. D.Help doctors freeze organs for transplantation.解析：解析 细节题。短文第三段开头主要讲 AFP 的用途。由 It can also be used to store meat and vegetables more effectively by.可知它可以用来储存肉和

42、蔬菜，防止变质。故选项 C 正确。(5).Which of the following statements is true?（分数：2.00）A.AFP was discovered more than three centuries ago.B.Few scientists are interested in continuing research on AFP.C.AFP can raise the temperature of any liquid.D.Scientists are thinking of a variety of ways to use AFP. 解析：解析 细节题。

43、短文第三段内容表明科学家正在研究 AFP 的多种用途，故选项 D 正确。根据Scientists have known about AFP for more than 30 years 可排除选项 A；根据文中提到的美国、加拿大、日本等国家的研究者都在研究 AFP，可知选项 B 错误；选项 C 在文中没有提及。故选 D。五、Passage Two(总题数：1，分数：20.00)Forget Brother, Can You Spare a Dime? The theme song of this recession might well be “Mother, Can You Write a

44、Check?“ The distressing economy has resulted in increasing numbers of parents and grandparents helping out their strapped adult children and grandkids with home down payments, credit-card bailouts (紧急财政援助), and spare cashoften at the same time as parents are trying to confront new retirement budgets

45、. “We are seeing a ton of this,“ says Ross Levin, an Edina, Minn., financial adviser. “Sometimes it“s a great idea and sometimes it is not. You have to make sure you put on your own oxygen mask first.“ Some 62 percent of visitors to G have helped their kids financially in the past year, with 70 perc

46、ent of that group handing over cash to help their adult children and grandchildren with daily expenses, says the site“s CEO, Jerry Shereshewsky. Another popular category is housing; in the last year many parents have coughed up down payments to help their kids get into homes while the $8,000 first-t

47、ime home buyer“s credit was in effect. Then there“s the debt-bailout situation. A survey recently conducted by Creditcards. com for Newsweek found that 42 percent of folks with adult children have helped them pay off car loans, credit cards, medical bills, and more. None of this is surprising to She

48、reshewsky, who sees the trend as a natural result of changing families and the distribution of wealth. “This is where all the money isand it“s where the money is, despite the fact that we“ve had this meltdown.“ In general, the baby-boom generation is far wealthier than their children are, and has a lower unemployment rate than 20-somethings. He says that the vast majority of multi-generation households now involve adult children (and sometimes their children) moving in with aging parents. Baby-boom parents generally aspire to helpin