Scienceandtechnologyhavebeenbringinghumanbeingstremendousbenefits.Thankstoscienceandtechnology,wenowlivecomfortablyandconvenientlyinhousesfurnishedwithairconditioners,refrigerators,washingmachinesandtelevisionsetc.Thankstoscienceandtechnology,wecaneatfreshvegetablesatttheyearround.thankstoscienceandtechnology,wecantraveltongdistancesinthefractionofasecondonplanes,trainsandcars.thankstoscienceandtechnology,wewearclotheswithsyntheticmaterialswhichcannoteasilybewornout.However,scienceandtechnologyhaveatsobroughtusatotofdisasters.First,becauseofthemanybreakthroughsinthefieldofmedicine,peoplearenowlivingmuchlongerthantheyusedto.asaresult,thepopulationoftheworldisincreasing,causingtotsofproblems.Second,becauseofthedevelopmentofindustry,totsofthewastesfromfactoriespourintotheairandrivers,causingpollutionofattkinds.Third,someterroristsareusingscienceandtechnologyagainstmankind.Theyusebiological,chemicalandunclearweaponstothreatenworldpeace...
Soit'surgentthatwefindwaystosolvetheseproblems.Butweshouldnotstopthedevelopmentofscienceandtechnologybecauseofthesedisasterstheybring,justasweshouldnotgiveupeatingforfearofchoking.Inaddition,weshouldmakesomerulestoregulateouractions.Aslongasweusescienceandtechnologyinaproperway,theymaybringusevenmorebenefits.
population[.pɔpju'leiʃən]n.人口,(全体)居民,人数
fraction['frækʃən]n.分数,小部分,破片
synthetic[sin'θetik]adj.综合的,合成的,人造的
regulate['regju.leit,'regjuleit]vt.管理,调整,控制
pollution[pə'lu:ʃən]n.污染,污染物
addition[ə'diʃən]n.增加,附加物,加法