下列哪项不是细辛的功效（）
A.祛风散寒
B.通窍
C.止痛
D.温中止呕
E.温肺化饮
参考答案：D
So hard ______ that we had to wait another day.
A．did it rain
B．it rained
C．has it rained
D．it has rained
二辊周期性冷轧管孔型工作部分由（）区段组成。
