The number of foreign students attending Chinese universities rising steadily si

The number of foreign students attending Chinese universities ________ rising steadily since1990. 

A. is         B. are         C. has been         D. have been

试题答案

C 

解析:

本题考查主谓一致和时态，主语是 the number故谓语动词用单数，又因时间状语是since 1997所以用完成时态。