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A、甲是乙的必要条件,但不是乙的充分条件

B、甲是乙的充分条件,但不是乙的必要条件

C、甲不是乙的充分条件,也不是乙的必要条件

D、甲是乙的充分必要条件

时间：2021-07-17 20:31 关键词：学历教育成人高考 2012年成人高考高起点《数学（文）》冲刺模拟试卷（一）

答案解析

A

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