让所有专业技术人员的绩效都与组织生产经营业绩紧密关联，使人人肩上都有担子，事事有目标，人人有事做，这往往决定了绩效管理的成功与否。
参考答案：对
Look, There’s __________ sheep on the hill and there are _______ children, too.
A．a few; a few
B．a ; a few
C．a few; a little
D．a little; a little
已知a-b=3，那么a3-b3-9ab的值是[ ]
A.3
B.9
C.27
D.81
