一 Jackson, I haven't seen you these days.

— I _____ for the coming English test. [ ]

A. am preparing

B. will prepare

C. prepare

D. have prepared

既能凉血止血，又能解毒敛疮的药物是

A．大蓟

B．艾叶

C．槐花

D．蒲黄

E．茜草