急黄的主要治法是（）
A.清热解毒，凉血开窍
B.健脾化湿
C.利湿化浊
D.逐瘀退黄
E.清热利湿
参考答案：A
—Yan Ming, could you make some posters, please?
—Sure, ________. [ ]
A. you're welcome
B. well done
C. that's no problem
D. I'm afraid not
什么叫煤层“三要素”？
