托法是用 和 的药物，扶助正气，托毒外出，以免毒邪内陷。
参考答案：补益气血 透脓
12. ----- Why don’t you do some shopping in the second-hand store ?
------ Well, the goods there are _____, but _____.
A．more expensive; worse
B．more expensive; not as bad
C．cheaper; good enough
D．cheaper; not as good
在铁水中那种元素的发热能力最大（）
A、碳
B、硅
C、磷
D、铁
