【題目】 —What’s that?

—It’s __________ eraser.

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

【答案】B

【解析】考查冠詞的用法。句意：——那是什么？——那是一塊橡皮。eraser是以元音音素開頭的單詞，故用不定冠詞an來修飾。故選B。

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