胡黄连除能清湿热外，还具有的功用是（）
A.清泄肺热
B.清热凉血
C.泻肝火
D.除疳热
E.清心热
参考答案：D
________, they have been struggling against the snowstorm for ten hours.[ ]
A. Up to now
B. By the time
C. From then on
D. In the future
砂垫层压力扩散角的最可能取值范围是( )。
A．0～20°
B．6°～23°
C．28°
D．20°～30°
