— It is said that in the future human beings will have to live in the sky or under the water.  

— ______!You don't really believe that, do you?     [ ]

A. It depends    

B. Go ahead        

C. Oh, come on    

D. That's great

( )是以分部分项工程量乘以单价后的合计为工程费，直接工程费以人工、材料、机械的消耗量及其相应价格确定。

A．用料单价法

B．综合单价法

C．工料单价法

D．统一单价法