John is a creative person. He can often _____ ideas that are surprising to his classmates.

A．come across

B．come up to

C．come up with

D．come into

确诊败血症的金标准是（）

A.血常规异常

B.血培养阳性

C.分泌物培养阳性

D.CRP升高

E.脑脊液培养阳性