2. 若集合，则A∩B是(A)．{1，2，3}(B). {1，2}(C). {4，5}(D). {1，2，3，4，5}

問題詳情

2. 若集合

，则A∩B是
(A)．{1，2，3}
(B). {1，2}
(C). {4，5}
(D). {1，2，3，4，5}

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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