—I knocked over my coffee cup. It went right over _________ keyboard.

— You shouldn't put drinks near _________ computer.

A．the;不填

B．the;a

C．a;不填

D．a;a

矿业土木工程项目招标承包方式，正确的分类有（）

A.按招标内容划分 

B.按承包商所处地位划分 

C.按业务承包范围分类 

D.按专项招标承包划分 

E.按阶段招标承包划分