下列药物中经醋炙后可增强散瘀止痛作用的有：（）
A.三棱
B.莪术
C.五灵脂
D.甘遂
E.艾叶
参考答案：A, B, C
To tell the truth, ________is my belief that parents shouldn't give children whatever they want. [ ]
A. as
B. it
C. what
D. that
高压弯头是采用( )锻造而成的。
A．低合金高强度结构钢
B．优质碳素钢
C．不锈耐酸钢
D．低合金钢
elief that parents shouldn't give children whatever they want. [ ]