科学和技术是一把双刃剑(英语500单词)

Withthedevelopmentoftechnology,ourlifehasbeengreatlyimproved,atthesametimeitalsobroughtharmtopeople.Asaconsequence,scienceandtechnologylikesadouble-edgedsword,becauseitbenefitshumanbypromotingeconomicandsocialdevelopment,butitmayhavenegativeconsequencesforhumansurvivalanddevelopmentundercertainconditions.★ThePositiveEffectsOfTechnologyDevelopmentOnHumanLifeInmanyways,Scienceandtechnologyimprovepeople'slives.Intermsofmedicine,theemergenceofavarietyofmoderntechnologiessavesthelivesofmanypeople.Intermsofastronomy,meteorologicalsatellitescanaccuratelypredictfutureweatherchangesovertime,theproductionofhumanlife;itprovidesconveniencetotheproductionofhumanlife.Fromtheaspectofhumanlife,allkindsofelectricalappliancesmakelifecomfortable,suchasairconditioning.Fromthe21stcentury,scienceandtechnology,especiallytherapiddevelopmentofcomputernetworktechnologyandelectronicinformationtechnology,makesmobilephonesandcomputersenteringthehomesofpeople,andtheybecomethenecessitiesofourlives.Especiallythepopularizationofthecomputer,wecanchatwithfriendsandfamilyontheinternet;wecanreadnews,watchmoviesandplaygamesonline;wecanlistentotheteacherintheclassandchecktheinformation;now,onlineshoppingisverypopular,too.Thus,wealsomustbeadmittedthatscienceandtechnologyischangingourlifeandcultureincertaindegree.Thedevelopmentofscienceandtechnologypromotetheprocessofhuman,andhumanshavethisnewandbetterlife.Theuseofhi-techtechnologymakemeansofproductionbecomemoremodern,automated,whichgreatlyimprovesproductionefficiency.However,thedrawbackoftechnologyisreal;moreover,itspresenceislikelyrelatedtothefateofourplanet.★TheNegativeEffectsOfTechnologyDevelopmentOnHumanLifeFirst,oneofproblemsistheglobalwarming.Duetoavarietyoftheuseoffossilfuels,greenhousegasesemissionsproducethegreenhouseeffect,makingglobalwarming,leadingmeltingofArcticiceandanomalousclimate.Thesecondistheformationofacidrain,ascarsandfactoriesthatreleaseagreatdealgases,includingsomeacidgas.Whenitrains,theywillformacidrain,whichcorrodebuildingsandhurtpeople’sskin.Third,atpresentalongwiththerapiddevelopmentofbiologicaltechnology,biologicalsafetyproblemhasbecomeabigpropositionthatinfluenceeconomicandsecurityandpoliticalofthewholecountry,thewholeworld.Forexample,SARSvirus.Therearemanyproblems.Forinstance,owingtoadvancesincomputertechnology,youngpeopleabandonedtheirstudies,theycannotextricatethemselves.Airconditioningandrefrigeratorsalsodestroyourpreciousatmosphere.◆Asaconsequence,scienceandtechnologyisadouble-edgedsword.Ontheonehand,itcanbreakbackward,ontheotherhanditalsobringhumanendlessdisaster.Itsnegativeeffectsshouldnotbeoverlooked,onlyifwedon'tgoagainstnatureofwayinthefairnessandjusticeofheart,wecanmakedevelopmentofscienceandtechnologyinrightdirection.