The number of foreign students attending Chinese universities_____rising steadily since 1990.
A、
is
B、
are
C、
has been
D、
have been
【正确答案】
C
【答案解析】
解析:本题考查时态和主谓一致,主语是the number故谓语动词用单数,又因时间状语是since 1990所以用完成时态。
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