下列何项不是六味地黄丸的药组（）。
A.丹皮
B.泽泻
C.枸杞
D.淮山药
E.茯苓
参考答案：C
In relation to the law of contract:
(a) Explain and distinguish between an offer (proposal) and an invitation to treat. (5 marks)
气的固摄作用具体表现在哪几个方面？
