17. At present, how we can look after    old is becoming    hot and severe issue.

A. the; a   B.  a; the

C. a; a    D.  the; the

17. A考査冠詞的用法。句意：現(xiàn)在如何照顧老人正成為一個熱點的嚴重的問題。第一空填the，"the +形容詞"表示一類人或物，the old指"老年人"；第二空填a，泛指一個熱點的嚴重的問題，所以選A。

題目來源：2015全品語法快練高中英語新課標 > 訓練9詞類綜合訓練

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