The office moving is necessary because
A. the department needs more staff.
B. the ground floor is more convenient.
C. of the increase of staff numbers.
Where does the speaker think the laser printers should go
A. In their current position.
B. In the center of the room.
C. Along one of the walls.
从系统调查、系统分析到系统设计是信息系统开发的主要工作，这3个阶段的工作量几乎占到总开发量的（）。
A. 50%
B. 60%
C. 70%
D. 80%
23（）
A. cheque
B. invoice
C. charge
D. demand
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