________ is announced in today's paper, they have succeeded in solving many problems in

accordance with the new theory. [ ]

A. It  

B. That

C. What  

D. As

以下哪点不是守门人的责任（）。

A.确定“编导”方针

B.确保“产品”数量

C.加强整体协调

D.发现和培养传播人才