支沟穴可治疗（）
A.喉痹
B.失眠
C.遗尿
D.痛经
E.便秘
参考答案：E
淡水淹溺所致低氧血症主要机理是肺泡改变了表面张力而萎陷。
-- I’m hungry, ls there any bread in the fridge?
-- ______but we have cakes. Would you like to have one?
A．Some
B．Much
C．None
D．Nothing
