已知A={x}，下列各式一定正确的是 A.xA B.0∈A �

已知A={x}，下列各式一定正确的是

A.x

B.0∈A

C.x∈A

D.x≠0

答案

解析：由于x是集合A中的元素，所以x∈A正确.

答案：C

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已知A={x}，下列各式一定正确的是 A.xA B.0∈A �

答案

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