题目

已知全集U={x∈N*|x<9 },集合∁U(A∪B)={1,3},A∩∁UB={2,4},则集合B等于( ) A．{1,3,5,6,7,8} B． {2,4,5,6,7,8} C． {5,6,7,8} D． {1,2,3,4} 答案：C

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