_______ one old lady, the bus was empty.
A.Except
B.Except for
C.But
D.Besides
答案:B
磺胺类
A.苯巴比妥B.安定C.吗啡D.苯妥英钠E.氯丙嗪
严重冠状动脉狭窄是指冠脉狭窄程度达
A.50%以上B.70%以上C.80%以上D.90%以上E.95%以上