既能退虚热，又可凉血的药组是（）
A.大青叶、青黛
B.黄柏、知母
C.板蓝根、黄连
D.白薇、白芷
E.青蒿、地骨皮
参考答案：E
---Mr Ding,I have some trouble ______the passage!
----Remember _____it three or four times at least !
A,to understand ,reading B.understanding ,reading
C,understanding ,to read D,to understand ,to read
生产工艺流程设计
