（）定义了数据的来源、去向和数据流量等内容。
A.数据项
B.数据结构
C.数据流
D.数据存储
参考答案：C
改错。
( )_________1. Sam likes playing the football after school.
A B C D
( )_________2. There are so much water in the lake.
( )_________3. Is she go to work by bus?
( )_________4. May I borrow you comic books?
( )_________5. She spends a lot of time to read English every day.
当实行施工总承包管理模式或CM模式时，业主与施工总承包管理单位或CM单位一般采用（）。
A．固定总价合同
B．固定单价合同
C．成本加酬金合同
D．可调总价合同
