新视野大学英语第四册第四单元课件

TheTelecommunicationsRevolutionBook4,Unit4TextA2Propernamestelecommunicationsopticalfiber(L.6)/high-capacityopticalfiberlinks(L.38)cable(L.7)copperwire(L.8)digitalswitches(L.8)/digitalmodel(L.22)/digitalmobilephonesystems(L.51)wirelesstransmissionsystems(L.9)theInformationAge(L.10)aspider’swebofdigitalandwirelesscommunicationlinks(L.11)电信光纤.光学纤维/高容量的光纤电缆网电缆铜线（电缆）数字转换器/数字模式/数字移动电话系统无线传播系统信息时代一个蜘蛛网般的数字和无线通信网络3Propernamestheinformationsuperhighway(L.39)logon(to)/logout/off(L.40)theelectronicdata(L.42)/electron(L.73)paperlesstrading(L.43)radiotower(L.53)stringlinesacrossmountainridges(L.53)wirelesscall(L.55)fixedlines(L.56)信息高速公路进入（计算机）系统；登录/退出电子数据/电子（信号）无纸化交易无线电发射塔翻山越岭架设线路无线电话固定线路4telephone&mobilephoneInternetandemailfaxradiodigitalTVsatelliteTelecommunicationsWhattelecommunicationsdevicesareavailableinyourlife?Whatdoestelecommeantoyou?5TelecommunicationsTelecommunications,fromGreek,means“communicationsatadistance”.Thefirsttrend:theincredibleincreaseintheprocessingpowerofdigitalcomputers,namely,dramaticdecreasesinphysicalsize,dramaticincreasesincomplexity,speedandcapacity.Thesecondtrend:theexplosivegrowthintransmissioncapacitythroughthewidespreaduseofopticalfiberacrosscontinentsandunderoceans.6opticalfiberOpticalfiber(or“fiberoptic”)oftenreferstothemediumandthetechnologyassociatedwiththetransmissionofinformationaslightpulses(光脉冲)alongaglassorplasticwireorfiber.Opticalfibercarriesmuchmoreinformationthanconventionalcopperwireandisingeneralnotsubjecttoelectromagnetic电磁的interferenceandtheneedtoretransmitsignals.Mosttelephonecompanylong-distancelinesarenowofopticalfiber.7InformationAgeWhenwesaythatweliveintheinformationage,wemeanthatweliveinatimewheninformationisveryimportantandeasytoget.Theinformationageisaneraoffundamentalandglobalchangeinintellectual,philosophical,culturalandsocialterms.Today’sinformationagebeganwiththetelegraph.Itwasthefirstinstrumenttotransforminformationintoelectricalformandtransmititreliablyoverlongdistances.Newtechniquesofencodinganddistributingdigitalinformationarepacingthespreadoftheinformationagethroughoutsociety.8InformationsuperhighwayAnamefirstusedbyformerU.S.VicePresidentAlGoreforthevisionofaglobal,high-speedcommunicationsnetworkthatwillcarryvoice,data,video,andotherformsofinformationallovertheworld,andthatwillmakeitpossibleforpeopletosende-mail,getup-to-the-minutenews,andaccessbusiness,governmentandeducationalinformation.9GlobalReadingTextAnalysisIntroduction+Question+SampleSolutions+Conclusion10GlobalReadingTextAnalysisFastReadingPartI(Para.1~2)ANewTechnologyandItsAdvantages•What’sthenewtechnology?•Whatareitsadvantages?(6advantages)PartII(Para.3)What’sinSuspense•What’stheproblemdevelopingcountriesarefacing?PartIII(Para.4~10)What’sinCertainty•Communicationswillbeakeyfactorseparatingthewinnersfromthelosers.•Whataretheconditionsinthesixcountriesandregions?Russia,themainlandofChina,Hungary,LatinAmerica,Thailand,Vietnam.(one-sentencesummaryonly)PartIV(Para.11)ABrilliantProspect11AnswersConditionsintheSixCountriesandRegionsRussia(Para.4)Russianeedstoinvestininformationtechnologyahugeamountofmoneytoupdateitsancienttelephonesystembutitisunlikelyduetoapooreconomy.ThemainlandofChina(Para.5~6)China,takingadvantagesofitsbackwardness,investsahugeamountofmoneytobecomemajorpartsoftheinformationhighway,andShanghaiplanstelecomnetworksaspowerfulasthoseinManhattan.12AnswersConditionsintheSixCountriesandRegionsHungary(Para.7)ToovercometheproblemoffundingandtospeedtheimportofWesterntechnology,Hungarysolda30%stakeinitsnationalphonecompanytotwowesterncompanies,whichHungaryfindsworthwhile.LatinAmerica(Para.8)Differentfromothercountries,wirelessphoneserviceprovidersinLatinAmericancountriesaremakingmoney.13AnswersConditionsintheSixCountriesandRegionsThailand(Para.9)PeopleinThailandarehappytoacceptthenewtechnologiesastheycanmakebetteruseofallthetimetheyspendstuckintrafficwithmobilephones.Vietnam(Para.10)Vietnamplanstoinvestmoreinopticalfiberdigitalswitches,andtransmissionsystemstokeeppacewithanyoneinAsiainnewtechfordecades.14FillingtheblanksCountriesAdvantagesProblemsSolutionsResultsRussiaChinaHungaryLatinAmericaThailandVietnam15…shouldgreatlyboostlivingstandards…(L.1)提高生活水准Tr.没有什么比在比赛中获胜更能提高运动员的士气。Nothingcanboostthemoraleofplayersbetterthantheirvictoryingames.DetailedReading16Placesthatuntilrecentlyweredeafanddumb…(L.2)figurativelanguageisolatedill-informednoexchangeofinformation/communicationparaphrase?thoseareaswhereuntilrecentlypeoplewereunabletocommunicatewiththeoutsideworldbecauseofthelackofthetelecommunicationsfacilities17Placesthatuntilrecentlyweredeafanddumbarerapidlyacquiringup-to-datetelecommunicationsthatwillletthempromotebothinternalandforeigninvestment.(L.2)translate?一些不久前还是信息闭塞的地方正在迅速获得最新的通信技术，这将促进他们吸纳国内外投资。18aparadeofurbancentersandindustrialzonesfrom…(L.9)Allthesedevelopingregions…(L.13)zone/district/region/areazone:具有某种明显特点的地区theindustrialzone/economicdevelopmentzonedistrict:由国家划定的行政区域XuanwudistrictofNanjingreg