【題目】In the afternoon, we have ________ music lesson for _________ hour.
A.a/a
B.a/an
C.an/a

【答案】B
【解析】句意:在下午,我們有一節(jié)一個(gè)小時(shí)的音樂課。A和an都是不定冠詞,修飾可數(shù)名詞單數(shù)形式,表示泛指一個(gè)……;an應(yīng)用于元音發(fā)音開頭的單詞前。第一個(gè)空后的名詞是music,輔音開頭,故用a;第二個(gè)空后的hour是元音/a/開頭的,故用an。選B。

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