7.设M={x|2<x<10},N={3,4,7},则M∩N=()A.MB.NC.{3,4,5,6,7,8,9}D.Φ
7.设M={x|2<x<10},N={3,4,7},则M∩N=()
A.M
B.N
C.{3,4,5,6,7,8,9}
D.Φ
参考答案和解析
A
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