-My grandmother passed away last week because of a heart attack.

-I'm sorry to hear that.[ ]

A. took away

B. broke away

C. died

D. was in hospital

企业形象识别系统中起主要作用的是（）。

A.理念识别系统

B.行为识别系统

C.视觉识别系统

D.感觉识别系统