许多化石证据表明,人类起源于( )
A:长臂猿
B:猕猴
C:森林古猿
D:猩猩
不等式x2-ax-b<0的解集为{x|2<x<3},则不等式bx2-ax-1>0的解集为( )
— . Few of them would become your real friends.