The number of various educational programs is increasing, _______ important roles have been realized by more and more people.

A．whose

B．where

C．which

D．that

下列情形不需要立案查办的是（）。

A.对严重违法乱纪行为的检举揭发

B.对打击报复事件的投诉

C.领导批示的问题

D.普通的申诉问题