【題目】 --- Is this ______ apple? ---- No, it’s ______ orange.

A. a; a B. an; a C. an; an D.a, an

【答案】C

【解析】

試題分析：句意：－這是一個蘋果嗎？－不。是一個桔子。根據(jù)句意，兩處都表示“一個……”，都該用不定冠詞。apple /pl/ 的第一個音//是元音音素，元音音素字母開始的單詞前用an；orange/rnd/ 的第一個音//也是元音音素，也得用an。故選C。

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