摘要:1.设集合 A∪(CUB)=( ) {2} (D){0.1.2}
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设集合U={-2,-1,0,1,2},A={1,2},B={-2,-1,2},则A∪(CUB)等于
[ ]
A.
{1,-2,2}
B.
{1,2}
C.
{2,-1,1}
D.
{0,1,2}
设集合U={(x,y)|x∈R,y∈R},A={(x,y)|2x-y+m>0},B={(x,y)|x+y-n≤0},那么点P(2,3)∈A∩(CUB)的充要条件是
[ ]
A.
m>-1且n<5
B.
m<-1且n<5
C.
m>-1且n>5
D.
m<-1且n>5