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【题目】—This is________useful dictionary, I think. So it is. And it's________ unusual one.

A.a, anB.a, aC.an, anD.the, an

【答案】A

【解析】

句意:——我认为这是一本有用的字典。的确是。它也是一本不同寻常的字典。

考查冠词辨析。两空均表示泛指,所以用不定冠词。useful以辅音音素开头,第一空用不定冠词aunusual以元音音素开头,第二空用不定冠词an。故选A

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