—You look very tired this morning. What did you do yesterday afternoon?

—I did               Christmas shopping. [ ]

A. a lot of

B. a few of

C. a number of

D. a piece of

腺瘤性息肉恶变应行（）

A.Dixon手术

B.Miles手术

C.Duhamel手术

D.局部切除术

E.拉下式直肠癌切除术