掌握系统优化的观点要求我们[ ]
A．注意矛盾双方的转化
B．要着眼于事物的整体性、有序性
C．要坚持两点论和重点论的统一
D．要具体问题具体分析
答案：B
抢救大咯血患者时最关键的措施是（）。
A.立即人工呼吸
B.立即输血输液
C.立即高流量吸氧
D.立即采取解决呼吸道梗阻的措施
E.使用呼吸中枢兴奋剂
With drink and food ____, the prisoner had to walk out of the cave where he was hiding.
A．running out
B．run out
C．use up
D．using up
