组成女性生殖系统的器官不包括( )
A:膀胱
B:卵巢
C:输卵管
D:子宫
甲乙两人从4门课程中各选修两门,则甲乙所选的课程中至少有1门不相同的选法共有( )种.
________I admit the boy has a gift for music,I don't think he will make a good singer.
已知集合M={-1,1},N={x|12<2x+1<4,x∈Z}则M∩N=