CStillwantalaptop?Thatwassoyesterday.Getreadyforthenextstageinthepersonalcomputerrevolution:It'stheultrathin(超薄的)cheapnetbook.AccordingtoaNewYorkTimesreportlastweekpersonalcomputersareabouttogoth

　　C

　　Stillwantalaptop?Thatwassoyesterday.Getreadyforthenextstageinthepersonalcomputerrevolution:It'stheultrathin(超薄的)cheapnetbook.

　　AccordingtoaNewYorkTimesreportlastweekpersonalcomputersareabouttogothroughtheirbiggestchangesincetheriseofthelaptop.Bytheendoftheyearconsumersarelikelytoseelaptopsthesizeofthinpaperbackbooksthatcanrunalldayonasinglechargeandareequippedwithtouchscreensorslide-outkeyboards.Thenetbookisakindofportablecomputerwithlearnerfunctionsforonlinesurfingandbasiccomputingactivitiesforexamplewordprocessing.Tocutthecostandweighttheyusuallyhavealow-poweredprocessorsmallscreennarrowkeyboardandnoODD.

　　Currentlysomeofthedeviceslookmorelikeatoythanafull-featurecomputer.That'sbecausemostofthenetbookssoldtodayrunonanIntelchipcalledAtom.Thisisalower-powerversionofthecompany'sstandardlaptopchipsotheyhavetroublerunningdemandingsoftwarelikegamesandphoto-editingprograms.

　　Thisyearagroupofcompanieswhomakecheappower-savingchipsusedincellphonesareapplyingthatexpertskilltoPCs.ThatmeanstheywillbreakAtom'snetbookdominance(统治地位)andreducethesizewhilelettingitruncomplicatedprograms.

　　Thebigwinnerintheriseofnetbookswillbetheconsumer.AT&TannouncedlastweekthatcustomersinAtlantaGeorgiaUScouldgetanetbookforjust$50(342yuan)iftheysignedupforanInternetserviceplan.ThistrendwillsoonspreadtoAsiaaccordingtoindustryexperts.

　　UniversitycampusesareamajortargetofShanzhainetbooks—uncopyrighted(无版权的)domesticcopiesofforeignbrands.Theseproductsareusuallysoldatlessthan2000yuan.Butindustryinsiderssuggeststudentsnotusethesenamelessproductsbecausemanyofthemdon'tprovidegoodafter-safesservices.

　　49．ThefollowingarealladvantagesofnetbooksEXCEPTthat .

　　A．peoplecaneasilyeditphotographswiththem

　　B．theycostlessthanotherpersonalcomputers

　　C．theyareverythinandeasytocarry

　　D．theysavepower

　　50．WhyarestudentsadvisednottouseShanzhainetbooks?

　　A．Becausetheyareofpoorquality.

　　B．Becausetheyar