— I can't understand what the teachers talk in class. what should I do?

— Why not ________ them what you don't know after class?[ ]

A. ask

B. to ask

C. you ask

D. asking

根据我国银行监管的规定：8％的资本充足率标准是（）

A.最低标准

B.最高标准

C.一般标准