Who is in favor of communicating on line？
A. The mart.
B. The woman.
C. Both.
查看答案
What did the man do last night？
A. He went to see a film.
B. He went to see his friend off at the airport.
C. He worked late.
What's being discussed in the talk？
A small television.
B. A wrist watch.
C. A walkman.
What is the woman most likely？
A patient.
B. A chemist.
C. A doctor.
在下列说法中，关于长期生产函数正确的是()。
A. 一般都超过10年
B. 在此期间，所有的生产要素都是固定的
C. 在此期间，所有的生产要素都有可能变动
D. 在此期间，只有一种投入要素的数量是可变的
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