新视野大学英语读写教程（第三版）讲义BookOneUnitThree授课班级：＿＿＿＿＿＿＿＿＿＿＿授课教师：＿＿＿＿＿＿＿＿＿＿＿2I.Warming-upActivities1.PreviewandLead-in(p60)1).Whataretheadvantagesanddisadvantagesofeachwayofteachingandlearning?TraditionalclassroomAdvantages:·moredirectcommunicationbetweenteachersandstudents;·abetterlearningatmosphere.Disadvantages:·littleinteractioneitheramongstudentsorbetweenstudentsandtheteacher;·teacherstendingtodominatetheclass;·writingonblackboardreducingefficiency.MultimediaclassroomAdvantages:·morevividteachingmaterials;·studentsbetterengagedinclassroomlearning.Disadvantages:·toomanydistractionswithtoomanypicturesandvideosinmultimediaclassrooms.StudyingonlineinthedormAdvantages:·beingabletochoosewhenandwhatyouwanttolearn;·easyaccesstothewiderangeofonlineinformationDisadvantages:·makingiteasierforstudentstocopyanswersfromtheInternet;·lackofface-to-facecommunicationbetweentheteacherandstudent;·thepossibilityforstudentstodevelopInternetaddiction.2).Whichwaydoyouprefer?Giveyourreasons.Ipreferthemultimediawayoflearning:·itisvividwithteachingmaterialspresentedindifferentways·Comparedwithtraditionalclassroom,itismoreinteresting.Iprefertostudyonline:·managemyowntime·havemyownproperties·dothingsatmyownpace3).DoyouthinktheInternetisindispensableinteachingandlearningnowadays?Whyorwhynot?TheInternetisindispensable:·getaccesstothelatestdevelopmentofteachingandlearning;·enjoymanyinterestingonlinecourses·communicatewithteachersafterclassTheInternetisnotindispensable:·teachingandlearninghavebeencarriedoutlongbeforetheInternetcameintobeing;·teachingandlearningcouldsurelycontinuewithouttheInternet.32.BackgroundInformation(教参p)Wi-FiWi-Fi(orWiFi)isalocalareawirelesstechnologythatallowsanelectronicdevicetoparticipateincomputernetworking.Itisdefinedasany“wirelesslocalareanetwork(WLAN)productbasedontheInstituteofElectricalandElectronicsEngineers’(IEEE)802.11standards”.However,theterm“Wi-Fi”isusedingeneralEnglishasasynonymfor“WLAN”sincemostmodernWLANsarebasedonthesestandards.ManymoderndevicescanuseWi-Fi,e.g.personalcomputers,video-gameconsoles,smartphones,digitalcameras,tabletsanddigitalaudioplayers.ThesecanconnecttoanetworkresourcesuchastheInternetviaawirelessnetworkaccesspoint.Suchanaccesspoint(orhotspot)cancoveranareaassmallasasingleroomwithwallsthatblockradiowaves,oraslargeasmanysquarekilometersbyusingmultipleoverlappingaccesspoints.Wi-Fiallowscheaperdeploymentoflocalareanetworks(LANs).SpaceswherecablescannotberuncanalsohostwirelessLANs.Manufacturersarebuildingwirelessnetworkadaptersintomostlaptops.ThepriceofchipsetsforWi-Ficontinuestodrop,makingitaneconomicalnetworkingoptionincludedinevenmoredevices.Differentcompetitivebrandsofaccesspointsandclientnetworkinterfacescaninter-operateatabasiclevelofservice.ManytraditionaluniversitycampusesinthedevelopedworldprovideatleastpartialWi-Ficoverage.CarnegieMellonUniversitybuiltthefirstcampus-widewirelessInternetNetworkatitsPittsburghcampusin1993.ByFebruary1997theCMUWi-Fizonewasfullyoperational.ManyuniversitiescollaborateinprovidingWi-Fiaccesstostudentsandstaffthroughtheeduroam(educationroaming)internationalauthenticationinfrastructure.LaptopAlaptop(alsoknownasanotebook)isaportablepersonalcomputerdesignedformobileusesmallenoughtositonone’slap.Alaptopismadeupofalargenumberofcomponentsthata...
