—We’d better go downstairs right now for lunch．

—____ They serve food 24 hours a day

A．Hurry up!

B．Take your time

C．It doesn’t matter.

D．No way!

对于警卫守护、巡逻值勤等项工作，公安机关的工作对策主要是( )。

A．打击

B．保护

C．打击与保护并重

D．防范