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（请给出正确答案）
__________ in universities around the nation has more than tripled compared to this time last year.
A. Enroll
B. Enrolls
C. Enrolling
D. Enrollment
B. Enrolls
C. Enrolling
D. Enrollment
参考答案
参考解析
解析：全国大学的入学人数已经是去年同期的三倍多了。本题要求选择enroll的适当词形。故选D。
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单选题A
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Royalties from inventions are higher than royalties from educational software programs.B
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The less education he or she has, the more regrets she or he would have.B
The more education he or she has, the less regrets she or he would have.C
More women than men had regrets about love and family.D
The regret of action seems to last longer than that of inaction.
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