Doing exercise for _________ hour every day is good for our health.

A. /                B. a              C. the         D. an

 

【答案】

D

【解析】

試題分析: 句意：每天鍛煉一個(gè)小時(shí)對我們的健康有好處。不定冠詞a/an泛指某一類事物，指數(shù)量“1”，a用于輔音音標(biāo)前，an用于元音音標(biāo)前；定冠詞the特指某類事物。根據(jù)語境可知是數(shù)量“1”小時(shí)，hour小時(shí)，字母h不發(fā)音，第一個(gè)音標(biāo)為元音，故選D

考點(diǎn)：考查冠詞。

 

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