The speech by the governor of Guizhou province at the ninth Chinese National Ethnic Games is deeply impressed _______ my memory.

A．to

B．over

C．by

D．on

高常规化的任务一般来说（）

A.任务的不确定性低

B.标准化要求高

C.信息要求低

D.与其他群体的相互作用较小

E.规范性高