题目内容
The number of foreign students attending Chinese universities ________ rising steadily since1990.
| A.is | B.are | C.has been | D.have been |
C
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。
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| A.is | B.are | C.has been | D.have been |