The police              the murderer everywhere when he suddenly             in the hospital.   [ ]

A. searched for; appeared

B. were searching; was appearing  

C. were searching for; was appeared

D. were searching for; appeared

生产网网络安全策略工单开通需要提供信息不包括（）。

A.源地址

B.源端口

C.目的地址

D.目的端口