产后出血原因中哪项首先考虑用子宫切除的方法止血（）
A.子宫收缩乏力
B.胎盘植入
C.胎盘嵌顿
D.凝血功能障碍
E.胎盘粘连
参考答案：B
—Some Chinese students find it difficult to understand native speakers when in London．
—Exactly, they've learned a lot about grammar and known many words.
A．if only
B．now that
C．even if
D．as if
可经Hoffmann消除的肌松药是（）
A.琥珀胆碱
B.维库溴铵
C.米库氯铵
D.泮库溴铵
E.阿曲库铵
