市场营销管理的任务就是为促进企业目标的实现而调节需求的（）。
A.数量
B.质量
C.水平
D.时机
E.性质
参考答案：C, D, E
When Nancy was at college, she ____ three foreign languages, but I am surprised to find that she ____ all except a few words of each.
A．spoke; had forgotten
B．had spoken; had forgotten
C．spoke; has forgotten
D．had spoken; has forgotten
若sin2x＞cos2x，则x的取值范围是().
A.A
B.B
C.C
D.D
