1、专业英语四级听力-51及答案解析 (总分：100.00，做题时间：90分钟)一、BPART DICTATIO(总题数：1，分数：40.00)1.Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the second and third readings, t
2、he passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minutes to check through your work once more.Life Span（分数：40.00）_二、BPART LIST
3、ENIN(总题数：0，分数：0.00)三、BSECTION A CONVE(总题数：3，分数：20.00)In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 sec
4、onds to answer the questions.Now listen to the conversation. （分数：6.00）(1).Why does the woman tell the man the story? A. To inform him about a class he missed. B. Because he is eating fish sticks. C. Because she tutors him. D. To encourage him to eat a healthier lunch.（分数：2.00）A.B.C.D.(2).Why is it i
5、mportant to quick freeze fresh food? A. The cells of plants and animals are damaged by slow freezing. B. It saves time in the food production process. C. It reduces the amount of energy required to freeze the food. D. The food defrosts more quickly.（分数：2.00）A.B.C.D.(3).What was Clarence Birdseye sur
6、prised to learn? A. A fish could survive being frozen. B. The fish were easier to catch in the winter. C. Food can be kept frozen indefinitely. D. Solutions that freeze slowly form large crystals.（分数：2.00）A.B.C.D.Questions 4 to 6 are based on the following conversation. At the end of the conversatio
7、n, you will be given 15 seconds to answer the questions.Now listen to the conversation. （分数：6.00）(1).What happened after the man built his first computer? A. He turned to become an enthusiastic reader. B. He went on to build a machine for his Junior High School. C. He became obsessed with computer e
8、ngineering. D. He was brushed by a hook.（分数：2.00）A.B.C.D.(2).What does the man see the future of computers? A. We will always have traditional PCs. B. We will see PowerMacs getting popular with people. C. Computers will be more friendly. D. There will be an era of distributed devices.（分数：2.00）A.B.C.
9、D.(3).What does the man say about the criticism of technology? A. We should ignore the criticism. B. We need to consider what technology may bring us. C. He feels bad about the criticism. D. He thinks the criticism is far-fetched.（分数：2.00）A.B.C.D.Questions 7 to 10 are based on the following conversa
10、tion. At the end of the conversation, you will be given 20 seconds to answer the questions.Now listen to the conversation. （分数：8.00）(1).What are speakers mainly discussing? A. The effect of the atmosphere on rainfall. B. How conditions on Earth support life. C. How water originated on Earth. D. A ne
11、w estimate of the age of Earth.（分数：2.00）A.B.C.D.(2).What did recent photographs from a space satellite indicate? A. The surface of the ocean is expanding. B. Volcanic activity is increasing. C. The surface of Earth contains tons of cosmic dust. D. Thousands of comets are colliding with Earths atmosp
12、here.（分数：2.00）A.B.C.D.(3).According to the new theory, where did ocean water come? A. From disintegrating comets. B. From gases in the atmosphere. C. From underground water that rose to the surface. D. From water vapor.（分数：2.00）A.B.C.D.(4).Which group disagree with the new theory described in the co
13、nversation? A. Biologists. B. Geologists. C. Oceanographers. D. Astronomers.（分数：2.00）A.B.C.D.四、BSECTION B PASSA(总题数：3，分数：20.00)In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.Questions 11 to 13 are based on the following pas
14、sage. At the end of the passage, you will be given 15 seconds to answer the questions.Now listen to the passage. （分数：6.00）(1).The speaker tells the students that they are not likely to succeed if they _. A. are too selfish B. do everything as others do C. are not greedy enough D. dont get a right de
15、gree（分数：2.00）A.B.C.D.(2).In the speakers opinion, learning does NOT include _. A. participating in new assignments B. developing new skills C. renewing skills D. going to the right school（分数：2.00）A.B.C.D.(3).The illiterate of the future refers to those people who cant _. A. renew their knowledge B.
16、forget the old knowledge C. know what they are doing D. read or write（分数：2.00）A.B.C.D.Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.Now listen to the passage. （分数：8.00）(1).When was the first actual radio broadca
17、st made? A. On Christmas Eve of 1906. B. On Christmas Eve of 1960. C. On Christmas Eve of 1895. D. On Christmas Eve of 1859.（分数：2.00）A.B.C.D.(2).Where did De Forest begin regular radio broadcasts? A. In Massachusetts. B. On ships. C. In New York. D. On ships in New York harbor.（分数：2.00）A.B.C.D.(3).A
18、ccording to the passage, who owned receivers in the early days of radio? A. Military communications officers. B. People who treated radio technology as a hobby. C. People who lived in big cities. D. People with an interest in music.（分数：2.00）A.B.C.D.(4).According to the passage, what did David Sarnof
19、f predict about radios? A. They would get smaller in size. B. Their signals would travel further. C. They would become less popular than television. D. They would be common household items.（分数：2.00）A.B.C.D.Questions 18 to 20 are based on the following passage. At the end of the passage, you will be
20、given 15 seconds to answer the questions.Now listen to the passage. （分数：6.00）(1).According to the passage, what were the beliefs of the Greek philosophers based upon? A. How the natural world was described in Greek mythology. B. What they observed directly. C. The writings of philosophers from other
21、 societies. D. Measurements made with scientific instruments.（分数：2.00）A.B.C.D.(2).What does the speaker say about ancient Greeks who traveled south? A. They noticed an apparent change in the position of the North Star. B. They observed eclipses at different times of the year. C. They were the first
22、to estimate the distance between heavenly bodies. D. They wanted to prove that the Earth was flat.（分数：2.00）A.B.C.D.(3).What does the speaker say the term stadium refers to? A. A place for making astronomical observations. B. An instrument used for observing stars. C. A unit of measurement. D. The No
23、rth Star.（分数：2.00）A.B.C.D.五、BSECTION C NEWS (总题数：5，分数：20.00)In this section, you will hear several news items. Listen to them carefully and then answer the questions that follow.Questions 21 and 22 are based on the following news. At the end of the news item, you will be given 10 seconds to answer t
24、he questions.Now listen to the news. （分数：4.00）(1).Where does the Tropical storm make landfall? A. In Escambia County. B. Along the Gulf Coast. C. In pensacola area. D. Along the Mexican Gulf Coast.（分数：2.00）A.B.C.D.(2).Who are allowed to return home tonight? A. The evacuated residents. B. Escambia Co
25、unty spokeswoman Sonya Smith. C. People who fight hurricane. D. People who fight tropical storm.（分数：2.00）A.B.C.D.Questions 23 and 24 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.Now listen to the news. （分数：4.00）(1).Until January 1
26、st, Congress and the President have to agree on the plan to _. A. cut the governments spending B. decrease the countrys debt C. lower taxes for all Americans D. reduce the poverty rate（分数：2.00）A.B.C.D.(2).What will happen if the Congress doesnt act? A. Medicare payment will drop sharply by 10%. B. M
27、any cities will be able to pay its debts. C. Defense spending will be decreased. D. More families will go hiking.（分数：2.00）A.B.C.D.Questions 25 and 26 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.Now listen to the news. （分数：4.00）(1
28、).What is the main idea of the news item? A. A fire broke out when people were busy scooping up the petrol. B. More than 100 people were engulfed by flames. C. A fire caused by gas spill put 57 people to death. D. As the petrol started to spill, local people ran up with cans to collect it.（分数：2.00）A
29、.B.C.D.(2).According to the officials, the total death is _. A. 57 B. 60 C. 86 D. 67（分数：2.00）A.B.C.D.Questions 27 and 28 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.Now listen to the news. （分数：4.00）(1).What caused the collapse of
30、 the Dutch government? A. The disagreement over policies on Afghanistan. B. The disagreement over policies on NATO. C. The disagreement between PM and the queen. D. The disagreement between PM and labor party.（分数：2.00）A.B.C.D.(2).Who is in charge for now in case of emergency? A. The Labour Party. B.
31、 The Prime Minister. C. The queen. D. NATO.（分数：2.00）A.B.C.D.Questions 29 and 30 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.Now listen to the news. （分数：4.00）(1).Whats announced by Harvard President? A. A plan to improve females a
32、ptitude for science. B. A plan to improve conditions for scientists. C. A plan to improve the conditions of the university. D. A plan to improve conditions for female scientists.（分数：2.00）A.B.C.D.(2).How much might the plan cost? A. Fifteen million dollars. B. Five million dollars. C. Fifty million d
33、ollars. D. Fifty-five million dollars.（分数：2.00）A.B.C.D.专业英语四级听力-51答案解析 (总分：100.00，做题时间：90分钟)一、BPART DICTATIO(总题数：1，分数：40.00)1.Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to unders
34、tand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minutes to check throug
35、h your work once more.Life Span（分数：40.00）_正确答案：()解析：听力原文Life SpanAbout a century ago, /the average life span for Americans was about 50 years. /Today, the typical American lives for around seventy-eight years. /According to a German aging study, /the maximum life span in industrialized countries has
36、 increased by two years every decade /since the mid-19th century. /What accounts for such increased longevity? /Between 1900 and 1950, /inventions such as refrigeration and sewage treatment meant that/young people were able to survive longer. /Moreover, medical breakthroughs helped contain diseases/
37、such as some fatal ones that killed many children. /These advances helped increase the average life span. /Medical discoveries after World War II tended to benefit older people. /Treatments for heart disease, /for example, have allowed the elderly to live longer on average. /This means that future m
38、edical breakthroughs will result in even longer average life span./解析 这篇听写有一定的难度，整体上句子比较长且多为复合句。不过，在理解大意的基础上如果能迅速地把握关键词life span，就基本能判断文章的主要内容：即随着科学技术日新月异的发展，许多曾影响人类寿命的疾病得到根治，因此人类的寿命大大地延长了。另外，account for是个关键性词组，听懂并快速理解这个词组对把握下面有关人类寿命延长的原因至关重要。此外，要注意refrigeration这个词的拼写。二、BPART LISTENIN(总题数：0，分数：0.00)
39、三、BSECTION A CONVE(总题数：3，分数：20.00)In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the
40、questions.Now listen to the conversation. （分数：6.00）(1).Why does the woman tell the man the story? A. To inform him about a class he missed. B. Because he is eating fish sticks. C. Because she tutors him. D. To encourage him to eat a healthier lunch.（分数：2.00）A.B.C.D.解析：听力原文 W: UI see you are having t
41、he fish for lunch./U M: Thats right. Fish sticks and tomato soup, my favorites. W: I bet they were frozen. M: What? W: The fish sticks. M: Of course they were frozen. We are hundreds of miles from the Ocean. The cafeteria cant afford to fly in fresh fish. W: I just mentioned it because an anecdote P
42、rofessor Chambers told me in my American social history class this morning. M: He talked about fish sticks? W: Not exactly. But he did talk about frozen fish. OK, this is back in 1912, right? Its 20 degrees below zero. And this guy Clarence Birdseyes out ice-fishing. M: Where is this, Antarctica? W:
43、 No. Massachusetts I think. Anyway he catches a fish and drops it beside him on the ice and it freezes solid. M: So? W: So, Ulater at home he thaws out the fish in a bucket of water and its alive. Of course Birdseye is amazed./U But he eventually figures out that the fish froze so fast that no large
44、 ice crystals formed. M: What do you mean? W: ULook, usually when a plant or animal cell freezes, large ice crystals form inside and eventually tear the cell wails. Thats what kills the frozen plant or animal. And also what changes the taste of something thats been frozen. But if you freeze somethin
45、g quickly, only very small ice crystals form./U So Birdseye invented the process of quick freezing food. M: And that was the beginning of frozen foods? W: Right. 解析 本题考查原因。根据原文划线部分可知，两人的对话从这个男士正在吃的鱼排展开，谈到了女士的美国社会史教授讲述的冷冻食品的来源。因此B为正确答案。(2).Why is it important to quick freeze fresh food? A. The cells of plants and animals are damaged by slow freezing. B. It saves time i
