The latest survey           by www.99.com found more than 12 percent of teenagers want to work as

pilots.       [ ]

A. to be carried out          

B. being carried out      

C. carried out                

D. having been carried out

患者，女，40岁，月经失调，痛经，经血颜色紫暗，有大量血块，平素腰膝酸软，舌红，脉弦数。

该患者宜首选（）

A.益母草

B.三棱

C.莪术

D.水蛭

E.穿山甲