膀胱、 * * 损伤暂时性膀胱造瘘需留管（）
A.3～5天
B.1～2周
C.半个月
D.15～20天
E.3周
参考答案：B
— Did he realize the serious situation immediately?
— No. It was quite a long time ________ he really realized it.
A．now that
B．when
C．ever since
D．before
吸气性呼吸困难多见于（）
A.支气管哮喘
B.喉头水肿
C.气管异物
D.肺气肿
E.气管肿瘤
