若log2a＜0，则a的取值范围是( )A．(，+∞) B．(1

若log_2a＜0，则a的取值范围是( )

A．(，+∞) B．(1，+∞) C．(，1) D．(0，)∪(1，+∞)

答案

答案：

D 由题意知或，解得a∈(0，)∪(1，+∞)．

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若log2a＜0，则a的取值范围是( )A．(，+∞) B．(1

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