1、专业英语四级（听力）练习试卷 7及答案与解析 一、 PART I DICTATION (15 MIN) Directions: Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal speed, listen and try to understand the meaning. For the second and third readings, the passa
2、ge 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 minute SECTION A CONVERSATIONS Directions: In this section you will hear several conv
3、ersations. Listen to the conversations carefully and then answer the questions that follow. 2 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. 3 W
4、hy is it important 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. 4 What was Clarence Birdseye sur
5、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. 5 What happened after the man built his first computer? （ A） He turned to become an enthusiasti
6、c reader. （ B） He went on to build a machine for his Junior High School. （ C） He became obsessed with computer engineering. （ D） He was brushed by a hook. 6 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
7、. （ C） Computers will be more friendly. （ D） There will be an era of distributed devices. 7 What does the man say about the criticism of technology? （ A） 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 i
8、s far-fetched. 8 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 new estimate of the age of Earth. 9 What did recent photographs from a space satellite indicate? （ A） The surface
9、 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 atmosphere. 10 According to the new theory, where did ocean water come from? （ A） Disintegrating comets. （ B） Gases in the atmo
10、sphere. （ C） Underground water that rose to the surface. （ D） Water vapor. 11 What group disagrees with the new theory described in the conversation? （ A） Biologists. （ B） Geologists. （ C） Oceanographers. （ D） Astronomers. SECTION B PASSAGES Directions: In this section, you will hear several passage
11、s. Listen to the passages carefully and then answer the questions that follow. 12 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 degree. 13 In the speakers opinion, le
12、arning includes （ A） participation in new assignments. （ B） formal training. （ C） renew skills. （ D） all of the above. 14 The illiterate of the future refers to those people who cant （ A） renew their knowledge. （ B） forget the old knowledge. （ C） know what they are doing. （ D） read or write. 15 Acco
13、rding to the speaker, 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 societies. （ D） Measurements made with scientific instruments. 16 What does th
14、e 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 rimes of the year. （ C） They were the first to estimate the distance between heavenly bodies. （ D） They wanted to prove that the Ear
15、th was flat. 17 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 North Star. 18 When was the first actual radio broadcast made? （ A） On Christmas Eve of 1906. （ B
16、） On Christmas Eve of 1960. （ C） On Christmas Eve of 1895. （ D） On Christmas Eve of 1859. 19 Where dill De Forest begin regular radio broadcasts? （ A） In Massachusetts. （ B） On ships. （ C） In New York. （ D） On ships in New York harbor. 20 According to the talk, who owned receivers in the early days
17、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. 21 According to tile talk, what did David Sarnoff predict about radios? （ A） They would get smaller in size. （ B） Their si
18、gnals would travel further. （ C） They would become less popular than television. （ D） They would be common household items. 22 Where the Tropical storm makes landfall? （ A） Escambia County. （ B） Along the Gulf Coast. （ C） Pensacola area. （ D） Along the Mexican Gulf Coast. 23 Who are being allowed to
19、 return home tonight? （ A） The evacuated residents. （ B） Escambia County spokeswoman Sonya Smith. （ C） People who fight hurricane. （ D） People who fight tropical storm. 24 How were the live US military officials killed? （ A） They were killed with bullets to the head. （ B） They were hit by a roadside
20、 bomb. （ C） They were found decapitated. （ D） They were kidnapped and then be killed. 25 Who are tile dead Iraqi men? （ A） They are Iraqi civilian. （ B） They are Iraqi soldiers. （ C） They are Iraqi terrorists. （ D） Their identities are net very clear. 26 What is tile main idea of tile news? （ A） A f
21、ire broke out when people were busy scooping up the petrol. （ B） More than 100 people were engulfed by flames. （ C） A lire caused by gas spill pat 57 people to death. （ D） As the petrol started to spill, local people ran up with cans to collect it. 27 According to the officials, the total death is （
22、 A） 57. （ B） 60. （ C） 86. （ D） 67. 28 According to the Sun, where did they get tile pictures of Saddam Hussein in jail in his underwear? （ A） From US military. （ B） From Saddam Husseins family member. （ C） From Saddam Hussein. （ D） From US government. 29 According to the news, whats the US military
23、doing now? （ A） They are inquisiting Saddam Hussein. （ B） They are taking photos on Saddam Hussein. （ C） They are releasing some Saddam Husseins photos. （ D） They are investigating how these photos got out. 30 Whats announced by Harvard President? （ A） Women may not have the aptitude for science and
24、 mathematics that men have. （ 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. 31 How much the plan might cost? （ A） Fifteen million dollars. （ B） Five million dollars. （ C） Fifty million
25、 dollars. （ D） Filly-five million dollars. 专业英语四级（听力）练习试卷 7答案与解析 一、 PART I DICTATION (15 MIN) Directions: Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal speed, listen and try to understand the meaning. Fo
26、r 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 minute 1 【正确答案】 Money When we think of mone
27、y today,/ we picture it either as round,/ flat pieces of metal coins; or as printed paper notes./ But there are still parts of the world today where coins and notes are of no use./ They would buy nothing,/ and a traveler could starve if he has none of the local “money“ to exchange for food./ Among i
28、solated peoples,/ commerce usually means a direct exchange of goods./ Perhaps it is fish for vegetables, meat for grain,/ or various kinds of food in exchange for pots, baskets, or other manufactured goods./ For this kind of simple trading,/ money is not needed./ But there is often something that ev
29、eryone wants and everybody can use,/ such as salt to flavor food,/ or iron and copper to make into tools and vessels./ These things are still used as money in the remote parts of the world today./ 【试题解析】 这篇听写的句子结构和单词都相对简单，意思比较好理解。初听starve可能会造成困扰，但是听到后面的 “没有当地的钱来换食物 ”的话，就可明确是 “挨饿 ”。另外，注意文中多处名词复数的使用。
30、【知识模块】 听力 SECTION A CONVERSATIONS Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. 2 【听力原文】 W: I see you are having the fish for lunch. M: Thats right. Fish sticks and tomato soup, my favorites. W: I bet
31、 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 Professor Chambers told me in my American social history class this morning. M: He talked
32、 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: No. Massachusetts I think. Anyway he catches a fish and drops it beside him on the ice
33、and it freezes solid. M: So? W: So, later at home he thaws out the fish in a bucket of water and its alive. Of course Birdseye is amazed. But he eventually figures out that the fish froze so fast that no large ice crystals formed. M: What do you mean? W: Look, usually when a plant or animal cell fre
34、ezes, large ice crystals form inside and eventually tear the cell walls. Thats what kills the frozen plant or animal. And also what changes the taste of something thats been frozen. But if you freeze something quickly, only very small ice crystals form. So Birdseye invented the process of quick free
35、zing food. M: And that was the beginning of frozen foods? W: Right. 2 【正确答案】 B 【试题解析】 本题考查原因。对话的开头就提到： “I see you are having the fish for lunch.”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。因此选项 B为正确答案。 【知识模块】 听力 3 【正确答案】 A 【试题解析】 本题考查原因。根据原文 “Look, usually when a plant or animal cell freezes， large i
36、ce crystals form inside and eventually tear the cell walls. And also what changes the taste of something thats been frozen. But if you freeze something quickly, only very small ice crystals form.”因此选项 A为正确答案。 【知识模块】 听力 4 【正确答案】 A 【试题解析】 本题考查事实。根据原文 “So, later at home he thaws out the fish in a bucke
37、t of water and its alive. Of course Birdseye is amazed.”可知应选 A。 【知识模块】 听力 5 【听力原文】 W: What started you in computers? M: I built my first computer when I was in Junior High School. I was an enthusiastic reader. I studied everything I could get my hands on. Then I turned to building my own machine. Fr
38、om that point on, I was hooked. W: Where do you see computers as going in the future? M: This will be the era of distributed devices, some of which will be in your walls, some of which you will wear, some of which will be in your cars and throughout your house, and maybe one of which will be on your
39、 desk. Devices with processors in them will be everywhere, they will be connected, and they will look less like traditional PCs. W: What kind of computer do you have now? M: My primary machine is a heavily loaded PowerMac, which I use to write all my books and to do video editing. Ive also got a Tos
40、hiba notebook which I use for all my work at the company and for email. W: There are critics who say that technology is dangerous and is moving too fast. Whats your reaction? M: There is criticism voiced in every generation. One cant stop this kind of progress, so the critics you cite above are curs
41、ing the dark. That being said, its important to always consider the implications of the technology we create, for they have social impact. 5 【正确答案】 C 【试题解析】 本题考查事实。根据原文 “Then I turned to building my own machine. From that point on, I was hooked.”这里使用了 hook“难以摆脱 ”一词，因此选项 C为正确答案。 【知识模块】 听力 6 【正确答案】 D
42、【试题解析】 本题考查评价。根据原文 “This will be the era of distributed devices, .”可知他认为将来的计算机应该是功能化的设备。因此选项 D为正确答案。 【知识模块】 听力 7 【正确答案】 B 【试题解析】 本题考查评价。根据原文 “There is criticism voiced in every generation.”及随后的 “. its important to always consider the implications of the technology we create, for they have social imp
43、act.”可知选项 B为正确答案。 【知识模块】 听力 8 【听力原文】 M: How did you like yesterdays astronomy class? W: It was interesting. But the point she was trying to make seemed a little far-fetched. M: Oh, that new theory that ocean water came from comets? W: Yeah. Do you remember what it was based on? M: Some recent satell
44、ite photos, I think. Apparently, space satellites recently detected thousands of small comets colliding with earths outer atmosphere, almost 40,000 per day. W: Ok, so they collided with the atmosphere. So thats what created the water? M: Its not that the collision created water. Comets contain water
45、. They are made up mostly of cosmic dust and water. When they collide with the atmosphere, they break up. And the water they contain rains down to earth. Ocean water came from that rain. W: Oh. Well, this morning I asked my geology professor about that. He said that most geologists draft accept it.
46、M: Why not? W: Their research indicates that most of the water molecules from the comet would have burned up as they fell through the atmosphere. Enough rain couldnt have reached the earth to fill up the ocean. M: Well, did the geologists have an alternative theory to explain where ocean water came
47、from? W: Yeah, he said the more traditional view is that the ocean water came from volcanoes. M: From volcanoes? W: Right. They say volcanic fumes are mostly steam. And they claimed that it was the volcanic steam that created the oceans, not rain from comets. 8 【正确答案】 C 【试题解析】 本题考查内容大意。根据原文可知两人谈沦的是昨
48、天的天文学课上学到的对海洋来源的最新的研究成果，重点讨论的是地球上水的来源。因此选项 C为正确答案。 【知识模块】 听力 9 【正确答案】 D 【试题解析】 本题考查事实。根据原文 “Apparently, space satellites recently detected thousands of small comets colliding with earths outer atmosphere, almost 40, 000 per day.”可知每天大约有 40,000个小彗星与地球的外气层相碰撞。因此选项 D为正确答案。 【知识模块】 听力 10 【正确答案】 A 【试题解析】
49、本题考查事实。根据原文 “Comets contain water.”及后面提到的“When they collide with the atmosphere, they break up. And the water they contain rains down to earth. Ocean water came from that rain.”可知当彗星与地球外气层相碰撞时，彗星中包含的水分会落到地球上来。因此选项 A为正确答案。 【知识模块】 听力 11 【正确答案】 B 【试题解析】 本题考查事实。根据原文 “Well, did the geologists have an alternative theory to explain where ocean water came from?”和随后的回答 “Yeah, he said the more traditional view is that the ocean water came from volcanoes.”可以得知他的地理学教授说大部分地理学家不赞成这一说法。因此选项 B为正确答案。 【知识模块】 听力 SECTION B PASSAGES Directions: In this
