英语演讲――科技的利弊.ppt

英语演讲――科技的利弊.ppt

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大小:4.24 MB

页数:14页

时间:2020-06-04

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5、.2021/7/286ClosercommunicationWiththeprogressofelectronicandcommunicationtechnology,people’scommunicationwitheachotherbecomemoreandmoreconvenientandquickbyusingtelephoneandotherchattools.Asaresult,theworldisbecomingincreasinglysmaller.2021/7/287TrainandcarAirplaneShipSpaceshuttleBecauseoftheeme

6、rgenceoftraffictools,itbecomessafer,quicker,morecomfortableandconvenientforustotravel,andeventhetransportationofgoodsbecomesfasterandcheaper.Traffictools2021/7/288But,technologyisatwo-edgedsword.2021/7/289Thegasdischargedfromindustrypollutestheair,whichnotonlymakepeoplebreathedifficultly,butals

7、ocausethegreenhouseeffectandglobalwarming.AirPollution2021/7/2810WaterPollutionAlotofriversandlakesarebeginningpollutedbythewastewaterfromfactories,fishcan’tliveinthemanylonger.Atthesametime,waterdoesharmtopeople’shealth,whichhasl

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