选修六unit4课文原文和翻译课件

THEEARTHISBECOMINGWARMER-BUTDOESITMATTER?全球在变暖——这会带来什么影响吗？THEEARTHISBECOMINGWARMER-B1SkimmingSkimthetitle:

THEEARTHISBECOMINGWARMER–BUTDOESITMATTER?Whatisthemaintopic?Theearth. B.Globalwarming.

C.Becomingwarmerdoesn’tmatter.

★★SkimmingSkimthetitle:Whati2Wheredoesthisarticlemostprobablycomefrom?NewspaperB.NovelC.Magazine

Wheredoesthisarticlemostp3

Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.在20世纪期间，地球温度大约升了华氏1度。Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.这个数值对你我来说很可能是无所谓的，但是跟其他自然变化相比较而言，这却是一种快速的增长。Sohowhasthiscomeaboutanddoesitmatter?那么，这种温度的增长是怎么产生的呢？会产生什么影响呢？EarthCare’sSophieArmstrongexploresthesequestions.“关爱地球”组织的索菲·阿姆斯特朗就在探究这些问题。comparedto与....比较；把...比作...

comeabout产生Duringthe20thcenturythet4comeaboutcomeabout:takeplace;happen表示“发生、产生”，多指事情已经发生了，但还不知道为什么，常用于疑问句和否定句,例:WhenMotherwokeup,shedidn’tknowwhathadcomeabout.I’llneverunderstandhowitcameaboutthatyouwerelatethreetimesaweek.comeaboutcomeabout:takepl5Whowrotethearticle?Whatisthenameofthemagazine?Skimthefirstparagraph:SophieArmstrongEarthCare听录音Whowrotethearticle?Whatis6Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)andthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫无疑问，地球是在变暖（见表一，略），而地球变暖正是人类活动导致而成的，并非是一种无规律的自然现象。Thereisnodoubtthattheear7…itishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.arandombutnatural修饰phenomenon，译为

“随意的自然的现象”，but起一个语气转折的作用，可不译出。…itishumanactivitythatha8ratherthan而不是……Sheisacareerwomanratherthanahousewife.

她是职业妇女而不是家庭主妇。ratherthan在更大程度上Thesearepoliticalratherthansocialmatters.

与其说这些是社会问题，不如说是政治问题。ratherthan而不是……9PartII(Para2-3)Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.GreenhouseGasesaretotallybad.FTFPartII(Para2-3)Everyonebelie10Allscientistssubscribetotheviewthattheincreaseintheearth'stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.所有的科学家赞同这种观点：人们为了生产能量而燃烧化石燃料（如煤、天然气和石油等），从而引起了地球温度的升高。Somebyproductsofthisprocessarecalled"greenhouse"gases,themostimportantoneofwhichiscarbondioxide.这个升温的过程的一些副产品就叫做“温室”气体，其中作用重要的就是二氧化碳。Allscientistssubscribetoth111.Greenhousegasesreferto_______.carbondioxideB.theburningoffossilfuelsC.byproductsoftheburningoffossilfuelsD.coal,naturalgasandoilscanningReadingComprehensionIV1.Greenhousegasesreferto__12DrJaniceFosterexplains:"Thereisanaturalphenomenonthatscientistscallthe'greenhouseeffect'.贾尼丝·福斯特博士解释说：“有一种科学家称之为‘温室效应’的自然现象。Thisiswhen

smallamountsofgasesintheatmosphere,likecarbondioxide,methaneandwatervapour,trapheatfromthesunandthereforewarmtheearth.这种现象发生在大气层中少量的气体（如二氧化碳、甲烷、水蒸气等）吸收太阳的热量，因而使地球变暖的时候。DrJaniceFosterexplains:"Th132.Greenhouseeffect_____.A.isanaturalphenomenonB.happenswhenthere’stoomuchcarbondioxideC.doesgreatharmtohumanbeingsD.makeslifeforhumanbeingsbetterscanningReadingComprehensionIV2.Greenhouseeffect_____.sca14Withoutthe'greenhouseeffect',theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.如果没有这种‘温室效应’，地球的温度将比现在的温度还要低33摄氏度左右。So,weneedthosegases.Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.因此，我们需要这些气体。当我们在大气层中增加了大量额外的二氧化碳时，问题就来了。Itmeansthatmoreheatenergytendsto

betrappedintheatmospherecausingtheglobaltemperaturetogoup."这意味着更多的热量被困在大气层中，从而引起全球温度上升。”quantitiesof大量的tendtodosht倾向做某事betrappedin被困住goup上升Withoutthe'greenhouseeffect151.Greenhouseeffectisanaturalp_______.______amountsofGreenhousegasesintheatmosphere.Buttheproblembeginswhenweaddhugeq

ofextracarbondioxidetotheatmosphere.Therefore,moreheatenergyist

intheatmospherecausingtheglobaltemperatureto_________.

FillintheblanksaboutthecausesofGreenhouseeffect.henomenon

uantities

rappedgoupSmall1.Greenhouseeffectisanatu16

Weknowthatthelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years.我们知道，在过去100~150年期间，二氧化碳的含量急剧增加了。

Itwas

a

scientistcalledCharlesKeeling,whomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.有一位名叫查尔斯·基林的科学家曾经把1957~1997年期间大气层中二氧化碳的含量作了精确的统计。Hefoundthatbetweentheseyearsthecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion(seeGraph2).他发现，在这些年里，大气层中的二氧化碳含量从315/1000000上升到370/1000000。（见表二，略）accuratemeasurements精确的统计theamountof....的数量Weknowthatthelevelsofca17选修六unit4课文原文和翻译ppt课件183._____foundouttheamountofcarbondioxideintheatmospherefrom1957to1977.A.Dr.JaniceFosterB.CharlesKeelingC.GeorgeHambleyD.SophieArmstrong3._____foundouttheamount19Para4.thelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years1.Howmuchhasincreased?Thecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion.Para4.thelevelsofcarbond20

Allscientistsacceptthisdata.所有科学家都接受这个数据。Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.他们还赞同下述观点，正是由于越来越多燃烧化石燃料导致了二氧化碳的增加。Sohowhighwillthetemperatureincreasego?那么气温会升到多高？DrJaniceFostersaysthatoverthenext100years

theamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.福斯特博士说，在今后的100年里，全球变暖的量可能低到1~1.5摄氏度，但是也有可能高达5摄氏度。Allscientistsacceptthisda21Para5.Howhighwillthetemperaturego?Theamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.Para5.Howhighwillthetemp22

However,theattitudeofscientiststowardsthisriseiscompletelydifferent.然而，科学家们在对待升温的态度上却是大不相同的。Ontheonehand,DrFosterthinksthatthetrend

whichincreasesthetemperatureby5degreeswouldbeacatastrophe.一方面，福斯特博士认为气温升高5度的趋势可能是一场大灾难，Shesays,"Wecan'tpredicttheclimatewellenoughtoknowwhattoexpect,butitcouldbeveryserious."她说：“对于未来的气候，我们不可能做出精确的预测，但是那时的天气可能是很糟糕的。”Otherswhoagreewithherthinktheremaybeariseofseveralmetresinthesealevel,同意她的观点的其他科学家认为，全球变暖会导致海平面上升好几米；orpredictseverestorms,floods,droughts,famines,thespreadofdiseasesandthedisappearanceofspecies.也有人预言会出现严重的风暴、洪涝、干旱、饥荒、疫病和物种的灭绝。However,theattitudeofscie23Ontheotherhand,therearethose,likeGeorgeHambley,whoareopposedtothisview,believethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.在另一方面，还有一些人，像科学家乔治·汉布利，反对上面的观点，他们认为我们不必担心空气中会有高含量的二氧化碳。Theypredictthatanywarmingwillbemildwithfewbadenvironmentalconsequences.他们预言说，变暖的情况不会很严重，对环境的影响也不会太坏。Infact,Hambleystates,"Morecarbondioxideisactuallyapositivething.Itwillmakeplantsgrowquicker;cropswillproducemore;itwillencourageagreaterrangeofanimals-allofwhichwillmakelifeforhumanbeingsbetter."汉布利实际上是这样说的：“二氧化碳含量的增加实际上是件好事，它使植物成长更快，庄稼产量更高，还会促进动物的生长——所有这些都能改善人类的生活。”agreaterrangeof更大范围的Ontheotherhand,therearet24ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambley

Dr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto_________上升_.Anincreaseoffivedegreeswouldbea___________灾难_andcouldbe___________非常严重___.Morecarbondioxideisa__________thing,whichmakescrops_____________产量更多andwillencourage____________________________.goupcatastropheveryseriouspositiveproducemoreagreaterrangeofanimalsThedifferentideasbetweenDr25Doesglobalwarmingmatter?Positiveeffects

Negativeeffects

Doesglobalwarmingmatter?Pos26causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectscausethesealeveltorisePos27causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswillproducemoreagreaterrangeofanimalsmakelifebettercausethesealeveltorisePos28

Greenhousegasescontinuetobuildupintheatmosphere.温室气体继续在大气层中聚集。Evenifwestartreducingtheamountofcarbondioxideandothergreenhousegases,theclimateisgoingtokeeponwarmingfordecadesorcenturies.即使我们开始减少二氧化碳和其他温室气体的含量，在（未来）几十年或几个世纪内，气候仍会持续转暖。Nooneknowstheeffectsofglobalwarming.没有人知道全球变暖带来什么样的影响。Doesthatmeanweshoulddonothing?这是不是意味着我们就不必采取任何措施呢？Or,aretheriskstoogreat?还是说，这样不采取任何措施危险性会很大呢？Greenhousegasescontinueto294.WhichofthefollowingstatementsisTrue?Burningfossilfuelscausestheglobalwarming.B.Wewillhavemorefoodwithglobalwarming.C.Globalwarmingmeansdisasterstohumans.D.Moregreenhousegaseswillgatherintheatmosphere.4.Whichofthefollowingstat30Trueorfalse?(P27)scanningReadingComprehensionIII2Thetemperatureinthelastcenturydidn’tseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesshecanmeasurethefutureglobalriseintemperature.4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.Trueorfalse?(P27)scann311.Althoughweareburning___________coaleveryyear,wewon’t________ofitforcenturies.2.Iftheamountofgreenhousegasescontinuesto________,wecouldbefacingaglobalcatastrophe.quantitiesofII.Fillintheblanksusingthephrasesbelow.comparedto/withcomeaboutquantitiesofgoupresultinevenifbeopposedtobuilduprunoutrunoutgoup1.Althoughweareburning___323.Manyscientistsbelievethatgloba