The number of foreign students attending Chinese universities rising steadily since 2010.
A. is
B. are
C. has been
D. have been
网友回答
A. is
B. are
(答案→)C. has been
D. have been
解析：句意：自从2010年开始来上中国大学的外国学生的数量一直在增长。因为与since当“自从”讲，常与现在完成时连用。因为整个句子的主语是number，它作主语时谓语动词用单数，故选C。