中国居民平衡膳食宝塔分为几层( ) 。
A．3
B．4
C．5
D．6
E．7
参考答案：C
---Have you persuaded him?
---Yes. After some hours of discussion, I ____ to reason him in accepting the new plan.
A．had managed
B．would manage
C．have managed
D．managed
生化汤中含有的药物是（）
A.当归、川芎
B.当归、生地
C.当归、白芍
D.桃仁、红花
E.桃仁、白芍
