[单项选择]Questions 23 to 25 are based on the conversation you have just heard.
A. People can spray coniine oxide on their car engines easily.
B. The material works as a pollution filter.
C. The material saves fuel for it reflects back the heat of burning fuel.
D. When burnt, the material will save fuel.

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[单项选择]Questions 19 to 21 are based on the conversation you have just heard.
A. Colleagues.
B. Boss and secretary.
C. Customer and client manager.
D. Husband and wife.

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[单项选择]Questions 19 to 22 are based on the conversation you have just heard.
A. They will leave as soon as the course is over.
B. They will leave on the 13th.
C. They will leave on the 14th.
D. They will leave on Monday—the 15th.

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[单项选择]Questions 23 to 25 are based on the conversation you have just heard.
A. Influence of ocean on animals.
B. Relationship between human beings and dolphins.
C. The lives of dolphins.
D. Reasons to protect dolphins.

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[单项选择]Questions 22 to 25 are based on the conversation you have just heard.A. Correcting examination papers. B. Researching in the library.
C. Teaching an economics course. D. Grading homework sets.

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[单项选择]Questions 11 to 18 are based on the conversation you have just heard.
A. The man’s article was written terribly.
B. The man’s article was completely off the point.
C. The man’s article was not accepted by the general public.
D. The man’s article was based on the general public.

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