There are sixty minutes in ______ hour.

A. 不填 B. the C. a D. an

D

【解析】

試題分析：考查冠詞。泛指復(fù)數(shù)時可用零冠詞，即不填；定冠詞the用于特指；a/an指“一個”，輔音字母開頭用a，元音字母開頭用an。根據(jù)語境分析，選擇“一個”，hour讀音以元音音節(jié)開頭，故選D。

考點：考查冠詞。

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