既破血逐瘀，又杀虫的药是（）
A.干漆
B.血竭
C.苏木
D.虎杖
E.自然铜
参考答案：A
________you've got a precious chance, you might as well make full use of it.[ ]
A. In case
B. Now that
C. Even though
D. The moment
常用液压泵是怎样分类的？
