治疗鹅口疮虚火上炎证，应首选（）
A．清热泻脾散
B．参苓白术散
C．泻心导赤散
D．黄连解毒汤
E．六味地黄丸
参考答案：E
Please tell me _____ to improve my English.
A．how I can do .
B．what can I do.
C．what I can do.
D．how can I do..
边际效用递减
