搜索
题目内容
已知全集U={1,2,3,4,5,6,7,8},M={1,3,5,7},N={5,6,7},则C
u
( M∪N)=( )
A.{5,7}
B.{2,4}
C.{2,4,8}
D.{1,2,3,4,6,7}