— Look! _____ carefully the girl is writing!

— Yes, she is always very strict with herself.[ ]

A. How

B. What

C. what a

D. How a

出血坏死型胰腺炎时的Cullen征是指（）.

A.胁腹皮肤呈灰紫色斑

B.脐周皮肤呈灰紫色斑

C.胁腹皮肤青紫

D.脐周皮肤青紫

E.脐周皮肤红斑