既能凉血止血，又能活血散瘀的药物有（）
A.大蓟
B.赤芍
C.白茅根
D.地榆
E.茜草
参考答案：B, E
____birds are there in the tree? [ ]
A. How
B. How many
C. Where
When you meet a new word in reading the English papers, you can guess its meaning but needn't
always ________ the dictionary.[ ]
A．look at
B．attach to
C．pay attention to
D．refer to
