—Hi,you look tired today.                

—_____________________          [ ]

A. I'd better look after myself

B. lt's dangerous

C. Yes, I went to bed late last night

D. You can't do that

影响软组织肉瘤预后的最重要因素是（）。

A.肿瘤的大小

B.肿瘤的部位

C.组织学分级

D.肿瘤的组织学类型

E.临床病程