The number of foreign students attending Chinese universities_____rising steadily since 1990.

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问题 The number of foreign students attending Chinese universities_____rising steadily since 1990.

选项 A、is
B、are
C、has been
D、have been

答案C

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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