Only those who have a lot in common can get along well.
_____________.Opposites sometimes attract.( )
A.I hope soB.I think so
C.I don't careD.I don't think so
4的倒数是( ) A. B. C.0.25
已知M的倒数是N,则6×(M×N)的结果是( ) A.6 B.6M C.6N
1÷A=B,A和B( ) A.都不是倒数 B.互为倒数 C.不是互为倒数
两个数相乘的积是1,则这两个数是( )
因为9×=1,所以( ) A.9是倒数 B.是倒数 C.9是的倒数