怀疑张力性气胸应立即（）
A.吸氧
B.拍胸片
C.胸腔排气
D.气管插管，辅助呼吸
E.输液、输血
参考答案：C
Betty had nothing for breakfast, ____________?
A．hadn’t she
B．had she
C．didn’t she
D．did she
Knowledge（）human beings into civilization.
A.channels
B.adapts
C.turns
D.takes
