甲状腺术后最危急的并发症是()
A．甲状腺危象
B．手足抽搐
C．喉返神经损伤
D．喉上神经损伤
E．术后呼吸困难和窒息
参考答案：E
细菌一般不含______，只能吸收现有的______维持生活，这种营养方式叫______．
— Use a piece of cloth to prevent the blood from ____ from the wound.
— It doesn't work. I think I'll have to see a doctor. [ ]
A. flying
B. flowing
C. falling
D. forming
