脑出血的内科疗法中，最重要是
A．降低血压
B．控制出血
C．控制脑水肿，预防脑疝
D．加强护理，注意水与电解质平衡
E．气管切开，吸氧
参考答案：C
Kate met a lot of problems _____ she was going over her lessons. [ ]
A. before
B. as soon as
C. until
D. while
按状态来划分旅游故障，有______旅游故障和______旅游故障。
