【題目】Do you think Maths __________ useful subject?

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

【答案】A

【解析】試題分析:句意:你認為數(shù)學是有用的科目嗎?因maths是一門科目,故用單數(shù)形式;又因useful的第一個音素是輔音音素,故不定冠詞要用a,故選A。

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