—Do you think we can get there on time?

—Yes,_________ the bus does not break down.

A．even if

B．unless

C．until

D．so long as

关于咳嗽用药

青光眼患者应慎用的是

A．苯丙哌林
B．右美沙芬
C．喷托维林
D．右美沙芬复方制剂
E．可待因