—The bag is very          . Can you help me carry it?

—Sure. [ ]

A. small            

B. new              

C. heavy

关于老年人败血症正确的有（）

A.多继发于肺部感染

B.易并发心内膜炎

C.由褥疮入侵者少见

D.预后差

E.致病菌以革兰阳性球菌多见