It is that he knew nothing it. A. obvious, about B. apparent, forC. obviously , about D. apparently

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【题目】It is __________ that he knew nothing __________ it.

A. obvious； about

B. apparent； for

C. obviously ； about

D. apparently ； for

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【答案】A

【解析】句意：很明显他对此事一无所知。It is obvious that. . . 为固定句式，意为“很明显……”；know nothing about. . . 对……一无所知，故A项正确。