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设全集为R,集合A="{x" | ≤1},则CRA等于
设全集为R,集合,,则等于
A. B. C. D.
设全集为R,集合A={x | ≤1},则CRA等于
A.{x | 0≤x<1} B.{x | 0<x≤1}
C.{x | x>1或x≤0} D.{x | x≥1或x<0}