(1).狗脊() (2).绵马贯众() (3).大黄()(4).何首乌()
A.来源于蛙壳蕨科
B.药用部位为根茎
C.两者都对
D.两者都不对
参考答案:C,B,D,D
He hasn't slept at all for three days.________ he is tired out. [ ]
A. There is no point
B. There is no need
C. It is no wonder
D. It is no use
高海拔地区,施工或外出时不得单独行动,并应保持联络,应根据实际情况配备食物、饮用水,()等应急物品。
A.车辆机油
B.车辆燃油
C.药品
D.食品