I _____ you would come today. You _____ me a phone call in advance.

A．don’t expect; should have given

B．didn’t expect; could have given

C．hadn’t expected; ought to give

D．didn’t expect; can have given

我国突发公共卫生事件应急机制建设原则有（）

A、统一指挥

B、反应灵敏

C、运转高效

D、协调有序