【題目】It is really unusual experience, and I’ll never forget .

A. a, them B. a, it C. an, it D. an, them

【答案】C

【解析】句意：這真的是一次不尋常的經(jīng)歷，我將永遠(yuǎn)不會(huì)忘記它。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，an用于元音發(fā)音開(kāi)頭的單詞前，第一個(gè)空后的單詞unusually，是元音發(fā)音開(kāi)頭，故用an修飾；it它，代替單數(shù)名詞；them代替復(fù)數(shù)名詞。這里代指的是一次經(jīng)歷，用單數(shù)。故選C。

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