【題目】English is _____ useful subject, and I do my English exercises for _____ hour every day.

A.a; anB.a aC.an; an

【答案】A

【解析】

句意:英語是一門有用的學(xué)科,并且我每天做一個小時的英語練習(xí)。

不定冠詞表泛指"一個";"a"用在以輔音音素開頭的單詞前,"an"用在以元音音素開頭的單詞前;the是定冠詞,表特指。根據(jù)題干可知useful的音標(biāo)是['jusf],是以輔音音素開頭的單詞,所以前面用不定冠詞"a";hour的音標(biāo)是 ['a],是以元音音素開頭的單詞,所以前面用不定冠詞"an",故選A。

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