—Have you got any particular plans for the coming holiday?

—Yes._______, I’m going to visit some homes for the old in the city.

A．If ever

B．If possible

C．If busy

D．If anything

限制使用类抗菌药是限制：（）

A.抗菌药应用适应证和适用人群

B.限制抗菌药作二线使用

C.限制抗菌药用于重症感染患者