---I’m sorry to keep you waiting. I’ll make short work of this.

--- ____________. I’m not in a hurry.

A．Take it easy

B．Take your time

C．Not at all.

D．Do as you like.

关于联合用药

与美西律联用，对室性早搏及室性心动过速有协同作用，但联合应用应酌减用量的是

A．普萘洛尔
B．利血平
C．甲氧氯普胺
D．阿托品
E．排钾利尿药