英语视听说ppt 科技的影响

scientific-technicalprocessAlongtimeago,thehumansocietywasstillintheprehistoriccivilization,therewasnomachine,noelectricityevennofire.Humanandanimalalmostnodifference.Fortheneedsofsurvival,humanbegintousesomesimpletoolstocapturetheanimaltomaintainlifeInthefollowingthousandsofyears,scienceandtechnologybeganasteadydevelopment,humanbegantocolsetothemodernsociety,includingvehicle,buildingandsomesimplecommunicationtoolsandsoon.UntiltheendoftheeighteenthCentury,Watt'ssteamengineMarkedthehumansocietyhasenteredtheeraofsteam.Thenaboutonehundredyearslater,GeneratormarkstheemergenceofhumansocietyintotheelectricEra.Sincethen,scienceandtechnologyisdevelopingwithhighspeed,moreandmorenewproductsappearinpeople'seyes.Whethercarsortelephone,ithasbroughtconveniencetopeople'slife.LaserThelaserissincetwentiethCentury,followingtheatomicenergy,computer,semiconductor,anothergreatinventionofhumanbeings,knownasthesharpestknife,themostaccurateruler,thebrightestlightandexoticlaser.“thesharpestknife”inmedicaltreatmentMinimallyinvasivetreatment“thesharpestknife”inmilitaryGreatdestructivepowerthemostaccuraterulerItcanbeusedinconstructionindustrythelasersalsocanusetheaccuracytoguidethemissiles.thebrightestlightAsakindoflight,italsocanbeusedtolighting.Thiskindofflashlightconcentratedenergytoilluminatesurroundingsbetter.MobilephoneMobilephoneisakindofcommunicationtools.ItwasinventedbyaSovietengineerinventedin1957.Themostwidelyusedonaglobalscaleisthesecondgenerationofmobilephones(2G).Uptonow,thelatestmobilephoneis4G.Mobilephonesaredividedintosmartphonesandfeaturephones.Smartphonehasextensivefunctionality.Anditismuchmorepracticablethanthefeaturephone.Theuserarefreetoinstalltheapplications.Asthetechnologydeveloped,themobilephoneisbecomingmoreandmoreconvenienttocarryon,andPerformanceisgettingstrongerandstronger.GoogleprojectGlassSmartWatchMobilephonehastotallychangedpeople’slife.Youcancallanyoneanywhereanytime.Youcanshop,chatandsearchinformationontheInternet.Mobilephonesfacilitateourlifes.Buttheyalsobringssomeproblems.Manypeoplecan’tlivewithoutthem.Itdoseneedourreflection.TheinfluenceoftechnologytoourlifeWiththedevelopmentoftechnology,ourlifehasbecomemoreandmoreconvenient,andtechnologyalsohasbecomeanimportantpartofourlife.Nowadays,wehavealreadycouldn'tleavetechnologyinourdailylife.WehavebeensurroundedbytechnologyGlobalvillageThewholeworld,insamesense,becomeasmallvillage.Wecanstayathomebutknoweveryimportantthinghappenedineverycorneroftheworld.InformationWithoutgoingoutside,youcanknowalltheinformationyouinterestedbysurfingtheInternet.ShoppingAreyoustillbuyingallthegoodsatsupermarketsorstores?Iftheanswerisyes,youareout!EntertainmentInsteadofwaitingtheTVprogrameverynight,youmightaswellwatchitintheInternet.GoingYoucangotojobbycar,ifyouwanttogofar,takingtrainorplaneisagoodchoice.Moreandmore...EverycoinhastwosidesTechnologyalsohasdisadvantages.Whentechnologymakesourdailylifemoreandmoreconvenient,italsomeanmoreenvironmentalpollutionandmoreenergybeused.