解除舌根后坠堵塞呼吸道的简便方法是（）
A.环甲膜穿刺术
B.口咽管放置术
C.经鼻气管内插管术
D.经口气管内插管术
E.气管切开术
参考答案：B
You really need to go out and get some fresh air and sunshine. You _____ overworked during the
last two weeks . [ ]
A. have been
B. were
C. had been
D. would be
topical diagnosis
