治疗慢性心功能不全常选用
A．利多卡因B．地高辛C．辛伐他汀D．硝苯地平E．地西泮
参考答案：B
Only in this way, directed by the teacher, ______work out the problem the day before.
A．had they
B．they could
C．could they
D．did they
行Caldwell-Luc手术时进入窦腔的部位是（）。
A.上颌窦裂孔
B.眶下孔
C.下鼻道
D.翼腭窝
E.尖牙窝
