甘草与芫花配伍，属于（）
A.相须
B.相使
C.相畏
D.相杀
E.相反
参考答案：E
If you go by train, you can have quite comfortable journey, but make sure you take fast one.
A．a; a
B．the; a
C．the; the
D．不填;a
一定的气体所含杂质的多少，称为（）
A.洁度
B.湿度
C.质量
