Do you know _______? [ ]

A. what did he say just now

B. how long we will stay here

C. who will we come to help

D. where is the neareast bus-stop

洋地黄中毒所致的室性心动过速忌用

A．直流电复律

B．KCl

C．利多卡因

D．普罗帕酮

E．苯妥英钠