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設(shè)集合M={1,2,4,8},N={x|x是2的倍數(shù)}，則M∩N=

A.{2,4}                        B.{1,2,4}                            C.{2,4,8}                            D{1,2,8}

（2010湖北文數(shù)）1.設(shè)集合M={1,2,4,8},N={x|x是2的倍數(shù)}，則M∩N=

A.{2,4}                        B.{1,2,4}                            C.{2,4,8}                            D{1,2,8}

 設(shè)集合M={1,2,4,8},N={x|x是2的倍數(shù)}，則M∩N=

A.{2,4}             B.{1,2,4}               C.{2,4,8}               D{1,2,8}

設(shè)集合M={1,2},N={a²},則“a=1”是“N⊆M”的(　　).

A.充分不必要條件  B.必要不充分條件

C.充要條件        D.既不充分也不必要條件

設(shè)集合M={1,2,4,8},N={x|x是2的倍數(shù)}，則M∩N=

A.{2,4}                        B.{1,2,4}                            C.{2,4,8}                            D{1,2,8}