【单选题】Sally has a busy ________, so she has much ________ to do every day. A. work; work B. job; work C. job; job D. work; job
【单选题】This is _____ interesting _____. [ ]
【单选题】_______ show the data or information flow within an information system; the data is traced from its origin through processing, storage, and output.
A.
Top-down analysis methods
【单选题】Processes on a data flow diagram:
A.
transform incoming data into outgoing information.
B.
represent the system boundaries.
C.
represent the work that a specific user performs.
D.
change the nature of the relationships on an entity-relationship diagram.
【单选题】I have a _____ , I _______ at a TV station.
【单选题】Do you have a _____?--- Yes, I _____ at a clothes shop.