烟草公司或其委托单位根据需要，可以设立烟叶收购站（点）收购烟叶。（）
参考答案：错
I soon found that the work I was doing had already been done by someone else－ , I was wasting my time.
A．what’s worse
B．all in all
C．all the best
D．in other words
研究中药方剂调配技术、理论和应用的科学，称为（）
A.中成药学
B.中药制剂学
C.中药调剂学
D.中药药剂学
E.中药方剂学
