题目内容

【题目】Do you think Maths __________ useful subject?

A. is a B. is an C. are a D. are an

【答案】A

【解析】试题分析：句意：你认为数学是有用的科目吗？因maths是一门科目，故用单数形式；又因useful的第一个音素是辅音音素，故不定冠词要用a，故选A。

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