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Over 20% of the students at that school _____ the habit of smoking, which is beyond imagination.

A.is B.are C.has D.have

D

解析试题分析:考察主谓一致。本题的主语是20% of the students,属于分数,百分数。分数,百分数做句子主语的时候,后面的谓语动词的单复数形式要看分数百分数后面的名词,如果后面的名词是可数名词复数形式,那么谓语动词就使用复数形式。如果后面的名词是不可数名词或者可数名词单数,那么谓语动词就使用单数形式。本题20% 后面是可数名词复数形式students,故使用复数形式。句意:那所学校里超过百分之20的学生有抽烟的习惯,这是难以想象的。根据句意说明使用have,表示有…的习惯。故D正确。
考点:考察主谓一致

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