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【题目】The number of the volunteers in our city ____3,000. And fifty percent of them ____ students.

A. is, is B. are, is C. is, are

【答案】C

【解析】句意“我们城市志愿者的数量是3000人,其中50%是学生”。“the number of+主语”,表示“……的数量”,谓语动词用单数,排除B。百分数做主语时,谓语要和百分数后的名词或代词保持一致,此处为them,用复数,故选C。

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