【題目】 I think Maths is ________ useful subject.

A. a. B. an.

C. the D. /

【答案】A

【解析】

試題分析:句意:我認(rèn)為數(shù)學(xué)是一門有用的學(xué)科。根據(jù)句意及題干分析“一門有用的學(xué)科”是泛指,所以用不定冠詞,useful開頭發(fā)音是輔音,所以用不定冠詞a,故選A。

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