适用于河谷狭窄、两岸地形陡峻、山岩坚实的山区河流的导流方法是()。
A.涵管导流
B.永久建筑物导流
C.隧洞导流
D.束窄河床导流
参考答案：C
Her classmates insisted that she the school trip to Guiyang. [ ]
A. organized
B. organize
C. would organize
D. had organized
鸡内金入汤剂的最佳用法是（）
A.先煎
B.研末冲服
C.后下
D.包煎
E.另煎
