集合A="{" x | y =" x," y∈R}，B={y|y=x2, x∈R} ，则A∩B="            " (   )A．{0 , 1}B．{

题型：单选题难度：简单来源：不详

集合A="{" x | y =" x," y∈R}，B={y|y=x², x∈R} ，则A∩B="            " (   )

A．{0 , 1}

B．{(0 , 1)}

C．{y|y≥0}

D．

答案

C

解析

略