【題目】— This is _________ useful dictionary, I think.

— So it is, and it’s _________unusual one.

A. the/ a B. a /an C. a/a D. 不填/ an

【答案】B

【解析】句意:——我認(rèn)為這是一本有用的詞典。——它的確是,而且是一本不同尋常的詞典。第一空表示”,useful是輔音音素開頭,故用不定冠詞a修飾。第二空one代指dictionary,表示一本詞典,unusual是元音音素開頭,故用不定冠詞an修飾。故選B。

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