八正散的功用是（）。
A．清胆利湿，化痰和胃
B．清热祛湿，利胆退黄
C．泻火凉肝，清热利湿
D．利湿化浊，清热解毒
E．清热泻火，利水通淋
参考答案：E
I am too tired, father. ________ having a rest?[ ]
A. Let's
B. Why
C. Which
D. How about
简述旅游宣传的基本原则
