單項選擇題

（）meansthataprogramwrittenforonecomputersystemcanbecompiledandrunonanothersystemwithlittleornomodification.

A.Portability
B.Reliability
C.Availability
D.Reusability

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單項選擇題

（）hasbecomeafactofmodemlife，withmillionsofpeoplenowshoppingon-line.

A.E-mail
B.E-commerce
C.E-Iearning
D.E-communication

單項選擇題

Thedata（）includesthefunctionofupdatingdataonadatabase，andretrievingdatafromadatabase.

A.management
B.storage
C.analysis
D.communication