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【单选题】
They named their son _ Winston Churchill.A.
for
B.
after
C.
on
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【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
A.
work work
B.
job work
C.
job job
D.
work job
【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
B.
Data flow diagrams
C.
System flow charts
D.
Grid charts
【单选题】( ) are four elements of data flow diagram.
A.
process, data flow, data store, external entity
B.
process, data flow, data table, entity
C.
process, data arrow, data table, entity
D.
process, data flow, relationship, external entity
【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】Do you have a _____?--- Yes, I _____ at a clothes shop.
A.
work, work
B.
work, job
C.
job, job,
D.
job, work.
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