下列哪些药材加工时不宜切成薄片
A.川芎
B.西洋参
C.乌药
D.当归
E.人参
参考答案:A,E
I hope my father _______ ask me about my marks. [ ]
A. not
B. not to
C. won't
D. don't
高速公路休息区的间隔一般为()。
(A)5~15km
(B)10~30km
(C)30~50km
(D)40~70km