题文
设全集U = R，集合M =" {" x | x＞0}，N =" {" x | x2≥x}；则下列关系中正确的是
A M∩N ∈M B M∪N =" M " C M∪N =" R " D（CU M）∩N = Φ
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设全集U = R，集合M =" {" x | x＞0}，N =" {" x | x2≥x}；则下列关系中正确的是
A M∩N ∈M B M∪N =" M " C M∪N =" R " D（CU M）∩N = Φ
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