His father possesses a __________ factory, which does most of the pollution to this river.

A．paper-make

B．paper-making

C．papers-made

D．paper-made

政策科学的功能可以归结为（）。

A.贯穿领导意志

B.促进科学地制定政策

C.减少政策的失误率

D.提高政策的有效性