[单项选择]Questions 19 to 21 are based on the conversation you have just heard.
A. It has numerous traits in common with the spotted owl.
B. Its population is increasing.
C. It may not survive without special efforts of conservationists.
D. Its role in the chain of evolution has not yet been examined.

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[单项选择]Questions 19 to 22 are based on the conversation you have just heard.A. To check the accuracy of scale. B. To calculate the density of other metal.
C. To observe changes in the atmosphere. D. To measure amounts of rainfall.

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[单项选择]Questions 23 to 25 are based on the conversation you have just heard.A. He’s studying for a test. B. He lost his note.
C. He missed the class. D. He’s doing research.

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[单项选择]Questions 19 to 21 are based on the conversation you have just heard.A. To the manager’s office. B. To the paperback section.
C. To the textbook area. D. To the publishers indexes.

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[单项选择]Questions 11 to 18 are based on the conversation you have just heard.
A. Have supper with the woman and her friends.
B. Go to the movies with the woman and her friends.
C. Go on with his paper until it is finished.
D. Go to an appointment with Anna.

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[单项选择]Questions 22 to 25 are based on the conversation you have just heard.
A. Rent would be very expensive.
B. Public transportation wouldn’t be available.
C. Apartments in Winsor are old.
D. Apartments in Winsor tend to be noisy.

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