We are often told by our teachers not to do such things that don’t _________a harmonious society.

A．come about

B．make for

C．come up

D．make up

多辊式输墨系统中，各个墨辊软硬间隔排列，是为了（）。

A.容易安装

B.布置需要

C.防止误差复映

D.接触良好