粉性强的药材是()
A.葛根
B.五味子
C.王不留行
D.知母
E.枳壳
参考答案:A
机箱面板上的指示灯,只要加上电压,就会发光。
You'd _______ go there alone in such a cold day.[ ]
A. better not
B. better don't
C. not better
D. better not to