初级卫生保健的基本原则（）
A.社会公正
B.社区参与
C.成本效果和成本效益
D.部门间协作行动
E.预防为主
参考答案：A, B, C, D, E
It was only with the help of the local guide _____. [ ]
A. was the mountain climber rescued
B. that the mountain climber was rescued
C. when the mountain climber was rescued
D. then the mountain climber was rescued
油气运移的总趋势是从（）流向（），从流向.
