D
WhenIfirstgotanemailaccounttenyearsago,Ireceivedcommunicationsonlyfromfamily,friends,andcolleagues.NowitseemsthateverytimeIcheckmye-mail,Ihaveanendlessseriersofadvertisementandotnercorrespondencethatd onotinteresttheatall.Ifwewante-mailtocontinuetobeuseful,weneedspeciallawsthatmakespamming(发送垃圾邮件)acrime.
Thisproblemistr oublingforinvidualsandcompaniesaswell.Manyspamemailscontaincomputervirusesthatcanshutd owntheentirenetworkofacompany.Companiesrelyone-mailonone-mailfortheirComployeestocommunicatewitheachother.Spamfrequentlycausesfailuresintheirlocalcommnicationsnetworks,andtheiremployeesarethusunabletocommunicateeffectively.suchasituationgresultsinalossofproductivityandrequirescompaniestorepeatedlyrepaitheirnetworks.Thesecomputerproblemsraiseproducttoncostsofcompanies,whichare,intheend,passedontotheconsumer.
60.Whatisthepurposeofthetext?
A.Toinform.
B.Toeducate
C.Topersuade
D.Toinstr uet
正确答案：C
