专业英语四级听力-51
PART Ⅰ DICTATION
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, 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 through your work once more.
Life Span
PART Ⅱ LISTENING COMPREHENSION
In Sections A, B and C you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow.
SECTION A CONVERSATIONS
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 questions.
Now listen to the conversation.
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.
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 in the food production process. C. It reduces the amount of energy required to freeze the food. D. The food defrosts more quickly.
3. What was Clarence Birdseye surprised 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.
Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the conversation.
【点此下载音频文件】
4. What happened after the man built his **puter?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 **puter engineering. D. He was brushed by a hook.
5. 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.
6. 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.
Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
【点此下载音频文件】
7. 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.
8. 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 Earth's atmosphere.
9. According to the new theory, where did ocean **e?A. From **ets. B. From gases in the atmosphere. C. From underground water that rose to the surface. D. From water vapor.
10. Which group disagree with the new theory described in the conversation?A. Biologists. B. Geologists. C. Oceanographers. D. Astronomers.
SECTION B PASSAGES
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 passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now listen to the passage.
【点此下载音频文件】
英语四级听力原文及音频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. don't get a right degree
2. In the speaker's opinion, learning does NOT include ______.A. participating in new assignments B. developing new skills C. renewing skills D. going to the right school
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