问题 选择题

The number of foreign students attending Chinese universities _____ rising steadily since 1997.

A.is

B.are

C.has been

D.have been

答案

答案:C

考查时态和主谓一致。The number of…的数量;作主语时,谓语动词用单数。根据后面的since,可知使用现在完成时。

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