─This box is _____ heavy for me to carry. Can you help me?

─Certainly. [ ]

A. so

B. much

C. very

D. too

乙醇中毒患者可出现的红细胞形态改变是（）

A.镰形红细胞

B.口形红细胞

C.球形红细胞

D.椭圆形红细胞

E.靶形红细胞