They had no sooner arrived at the airport       it was time to check in.

A．when

B．before

C．than

D．though

维拉帕米（）

A.具有二氢吡啶结构的钙通道阻滞药

B.中效的镇静催眠药

C.第一个开发的钙拮抗药

D.适用于急性心肌梗死、洋地黄中毒等所致室性心律失常

E.血管紧张素转化酶抑制药