砂炒后趁热用醋浸法炮制的药物是（）
A.马钱子
B.脐带
C.穿山甲
D.栀子
E.川楝子
参考答案：C
Tom can't play the match now. Please _____. [ ]
A. have Bob to do it
B. let Bob to do it
C. have Bob do it
Name the author of the following literary works.
Ode on a Grecian Urn
