Don't worry, sir. I'm sure I can run _____ to catch up with them. [ ]

A. fast enough

B. enough fast

C. slowly enough

D. enough slowly

出血坏死胰腺炎的特征是（）

A.上腹痛向左腰背放射

B.脐部及腰部皮肤呈青紫色

C.血清高铁白蛋白阴性

D.黄疸

E.糖尿