单项选择题
（）hasbecomeafactofmodemlife，withmillionsofpeoplenowshoppingon-line.
A.E-mail B.E-commerce C.E-Iearning D.E-communication
单项选择题 Thedata（）includesthefunctionofupdatingdataonadatabase，andretrievingdatafromadatabase.
单项选择题 TCP/IP（）arethestandardsaroundwhichtheInternetwasdeveloped.
单项选择题 C++fullysupports（）programming，includingthefourproperties：encapsulation，datahiding，inheritance，andpolymorphism.
