英语演讲_核污染

NuclearPollutionAbstract•Lastcentury,thediscoveryandexplorationoftheatomandnuclearmaterialsoffersunlimitedpossibilitiesforhuman-beingstousethismysteriousandeffectiveenergy.Also,theseriousproblemofglobalwarmingmakespeopleturntothisrenewableenergy.Constanttechnologicaladvancespromptedthecontinuousemergenceofanincreasinglylargenumbersofinventions.Humansalsohavefoundplentyofmethodsusingthismysteriousenergy.•Obviously,onecharacteristicofthisenergywhichraiseshumans’concernisthatitcanreleaserapidly,scientiststhinkthisisanexplosivesubstancemuchmoreeffectivethandynamite.Atomicbombhasbeeninventedasakindofseverely-damagingweapon.Also,byusingtheenergy,nuclearpowerplantsnowdelivercleanenergytomillionsofhouseholds.•However,disastersstruck.•1945---inHiroshima(广岛),Japan,theUnitedStatesdroppedthefirstatomicbomb.However,thedisastrousconsequencesareunimaginable.PeoplerealizedthatsayingJapanhadexperiencedacatastrophewasn’tanexaggeration.•1986---Chernobyl(切尔诺贝利)nuclearpowerplantexplosed,theentireChernobylareawasrazedinruins.TodayChernobylisstillaghosttown,mankindhasneverforeseentheconsequencesofthedisasterbeingsosevere.•2011---Fukushima(福岛)nuclearleak,agreatmanyoftheradioactivesubstanceshavecontaminatedtheentirePacific.PeoplearestillunclearthathowseriousconsequencesJapanesewillmeetinthefuture.•Hazardsnuclearpollutionbringstohumansareinestimabletillnow.Hence,peoplestillhavealongwaytogoonthepathofworldexploration.RisksandImpactsofGlobalWarmingUsageofNuclearEnergynuclearweaponnuclearpowerplantprincipleDisasters1945---HiroshimaandNagasaki1986---Chernobyl2011---Fukushimabeforebombafterbombruinsfilledwithcorpsemushroomcloud1945powerplantshambles19861986Chinesenewspaperrelatedtothedisasterghosttown1986ghosttown1986abnormalchildrencausedbynuclearradiation19861986abnormalchildrencausedbynuclearradiationfourtalldamagedreactorbuildingsknownas(righttoleft)Units1,2,3and4.2011radioactivesubstancesdiffusephotographedbysatellitesradiationspreadwhatisthefutureofnuclearenergy?References•••••