—Don't shout in the library, please.

—________[ ]

A. It doesn't matter.    

B. That's all right.  

C. Sorry, I won't.      

D. Excuse me.

我国企业的问题不包括（）

A.摸着石头过河

B.西部牛仔现象

C.有效沟通不畅

D.追求个人利益