5、heap2-4ComputerVirusesThe computer virus is an outcome of the computer overgrowth in the 1980s.1.Computervirusesaresmallprograms,which______C)Reproducebyattachingacopyofthemselvestoanotherprogram2.Virusescaninfectotherprogramsifonlytheyare____C)Attachedtoanoth
6、erprogram3.Peoplecreatevirusesforthepurposeof________B)damagingthesystem4.Thefourmaintypesofvirusesdonotinclude______D)Harddisk5.About50%ofvirusesareshellviruses,becauseshellviruses________C)areeasytowrite6.What do intrusive viruses place into a host program?B
7、)Some virus 7.What must an operating system virus do before overtaking an operating system?A)Load onto the system 3-1BuildingYourBusiness,BuildingYourPeopleWhatanexcitingthingtodo—developingasuccessfulbusiness!1.Fromthefirstparagraphweknowtheauthor`spresentcom