—I am told to get there before seven tomorrow.

—Well, you ______ to catch the first early bus.

A．expect

B．are expected

C．are expecting

D．will expect

板蓝根对哪种病原微生物的抑制作用最显著（）

A、病毒

B、细菌

C、真菌

D、钩端螺旋体

E、衣原体