選修六unit4課文原文和翻譯課件

THEEARTHISBECOMINGWARMER-BUTDOESITMATTER?全球在變暖——這會(huì)帶來(lái)什么影響嗎？THEEARTHISBECOMINGWARMER-B1SkimmingSkimthetitle:

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

C.Becomingwarmerdoesn’tmatter.

★★SkimmingSkimthetitle:Whati2Wheredoesthisarticlemostprobablycomefrom?NewspaperB.NovelC.Magazine

Wheredoesthisarticlemostp3

Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.在20世紀(jì)期間，地球溫度大約升了華氏1度。Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.這個(gè)數(shù)值對(duì)你我來(lái)說(shuō)很可能是無(wú)所謂的，但是跟其他自然變化相比較而言，這卻是一種快速的增長(zhǎng)。Sohowhasthiscomeaboutanddoesitmatter?那么，這種溫度的增長(zhǎng)是怎么產(chǎn)生的呢？會(huì)產(chǎn)生什么影響呢？EarthCare’sSophieArmstrongexploresthesequestions.“關(guān)愛(ài)地球”組織的索菲·阿姆斯特朗就在探究這些問(wèn)題。comparedto與....比較；把...比作...

comeabout產(chǎn)生Duringthe20thcenturythet4comeaboutcomeabout:takeplace;happen表示“發(fā)生、產(chǎn)生”，多指事情已經(jīng)發(fā)生了，但還不知道為什么，常用于疑問(wèn)句和否定句,例:WhenMotherwokeup,shedidn’tknowwhathadcomeabout.I’llneverunderstandhowitcameaboutthatyouwerelatethreetimesaweek.comeaboutcomeabout:takepl5Whowrotethearticle?Whatisthenameofthemagazine?Skimthefirstparagraph:SophieArmstrongEarthCare聽(tīng)錄音Whowrotethearticle?Whatis6Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)andthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫無(wú)疑問(wèn)，地球是在變暖（見(jiàn)表一，略），而地球變暖正是人類活動(dòng)導(dǎo)致而成的，并非是一種無(wú)規(guī)律的自然現(xiàn)象。Thereisnodoubtthattheear7…itishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.arandombutnatural修飾phenomenon，譯為

“隨意的自然的現(xiàn)象”，but起一個(gè)語(yǔ)氣轉(zhuǎn)折的作用，可不譯出?！璱tishumanactivitythatha8ratherthan而不是……Sheisacareerwomanratherthanahousewife.

她是職業(yè)婦女而不是家庭主婦。ratherthan在更大程度上Thesearepoliticalratherthansocialmatters.

與其說(shuō)這些是社會(huì)問(wèn)題，不如說(shuō)是政治問(wèn)題。ratherthan而不是……9PartII(Para2-3)Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.GreenhouseGasesaretotallybad.FTFPartII(Para2-3)Everyonebelie10Allscientistssubscribetotheviewthattheincreaseintheearth'stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.所有的科學(xué)家贊同這種觀點(diǎn)：人們?yōu)榱松a(chǎn)能量而燃燒化石燃料（如煤、天然氣和石油等），從而引起了地球溫度的升高。Somebyproductsofthisprocessarecalled"greenhouse"gases,themostimportantoneofwhichiscarbondioxide.這個(gè)升溫的過(guò)程的一些副產(chǎn)品就叫做“溫室”氣體，其中作用重要的就是二氧化碳。Allscientistssubscribetoth111.Greenhousegasesreferto_______.carbondioxideB.theburningoffossilfuelsC.byproductsoftheburningoffossilfuelsD.coal,naturalgasandoilscanningReadingComprehensionIV1.Greenhousegasesreferto__12DrJaniceFosterexplains:"Thereisanaturalphenomenonthatscientistscallthe'greenhouseeffect'.賈尼絲·福斯特博士解釋說(shuō)：“有一種科學(xué)家稱之為‘溫室效應(yīng)’的自然現(xiàn)象。Thisiswhen

smallamountsofgasesintheatmosphere,likecarbondioxide,methaneandwatervapour,trapheatfromthesunandthereforewarmtheearth.這種現(xiàn)象發(fā)生在大氣層中少量的氣體（如二氧化碳、甲烷、水蒸氣等）吸收太陽(yáng)的熱量，因而使地球變暖的時(shí)候。DrJaniceFosterexplains:"Th132.Greenhouseeffect_____.A.isanaturalphenomenonB.happenswhenthere’stoomuchcarbondioxideC.doesgreatharmtohumanbeingsD.makeslifeforhumanbeingsbetterscanningReadingComprehensionIV2.Greenhouseeffect_____.sca14Withoutthe'greenhouseeffect',theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.如果沒(méi)有這種‘溫室效應(yīng)’，地球的溫度將比現(xiàn)在的溫度還要低33攝氏度左右。So,weneedthosegases.Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.因此，我們需要這些氣體。當(dāng)我們?cè)诖髿鈱又性黾恿舜罅款~外的二氧化碳時(shí)，問(wèn)題就來(lái)了。Itmeansthatmoreheatenergytendsto

betrappedintheatmospherecausingtheglobaltemperaturetogoup."這意味著更多的熱量被困在大氣層中，從而引起全球溫度上升。”quantitiesof大量的tendtodosht傾向做某事betrappedin被困住goup上升Withoutthe'greenhouseeffect151.Greenhouseeffectisanaturalp_______.______amountsofGreenhousegasesintheatmosphere.Buttheproblembeginswhenweaddhugeq

ofextracarbondioxidetotheatmosphere.Therefore,moreheatenergyist

intheatmospherecausingtheglobaltemperatureto_________.

FillintheblanksaboutthecausesofGreenhouseeffect.henomenon

uantities

rappedgoupSmall1.Greenhouseeffectisanatu16

Weknowthatthelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years.我們知道，在過(guò)去100~150年期間，二氧化碳的含量急劇增加了。

Itwas

a

scientistcalledCharlesKeeling,whomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to1997.有一位名叫查爾斯·基林的科學(xué)家曾經(jīng)把1957~1997年期間大氣層中二氧化碳的含量作了精確的統(tǒng)計(jì)。Hefoundthatbetweentheseyearsthecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion(seeGraph2).他發(fā)現(xiàn)，在這些年里，大氣層中的二氧化碳含量從315/1000000上升到370/1000000。（見(jiàn)表二，略）accuratemeasurements精確的統(tǒng)計(jì)theamountof....的數(shù)量Weknowthatthelevelsofca17選修六unit4課文原文和翻譯ppt課件183._____foundouttheamountofcarbondioxideintheatmospherefrom1957to1977.A.Dr.JaniceFosterB.CharlesKeelingC.GeorgeHambleyD.SophieArmstrong3._____foundouttheamount19Para4.thelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100to150years1.Howmuchhasincreased?Thecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion.Para4.thelevelsofcarbond20

Allscientistsacceptthisdata.所有科學(xué)家都接受這個(gè)數(shù)據(jù)。Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.他們還贊同下述觀點(diǎn)，正是由于越來(lái)越多燃燒化石燃料導(dǎo)致了二氧化碳的增加。Sohowhighwillthetemperatureincreasego?那么氣溫會(huì)升到多高？DrJaniceFostersaysthatoverthenext100years

theamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.福斯特博士說(shuō)，在今后的100年里，全球變暖的量可能低到1~1.5攝氏度，但是也有可能高達(dá)5攝氏度。Allscientistsacceptthisda21Para5.Howhighwillthetemperaturego?Theamountofwarmingcouldbeaslowas1to1.5degreesCelsius,butitcouldbeashighas5degrees.Para5.Howhighwillthetemp22

However,theattitudeofscientiststowardsthisriseiscompletelydifferent.然而，科學(xué)家們?cè)趯?duì)待升溫的態(tài)度上卻是大不相同的。Ontheonehand,DrFosterthinksthatthetrend

whichincreasesthetemperatureby5degreeswouldbeacatastrophe.一方面，福斯特博士認(rèn)為氣溫升高5度的趨勢(shì)可能是一場(chǎng)大災(zāi)難，Shesays,"Wecan'tpredicttheclimatewellenoughtoknowwhattoexpect,butitcouldbeveryserious."她說(shuō)：“對(duì)于未來(lái)的氣候，我們不可能做出精確的預(yù)測(cè)，但是那時(shí)的天氣可能是很糟糕的?！監(jiān)therswhoagreewithherthinktheremaybeariseofseveralmetresinthesealevel,同意她的觀點(diǎn)的其他科學(xué)家認(rèn)為，全球變暖會(huì)導(dǎo)致海平面上升好幾米；orpredictseverestorms,floods,droughts,famines,thespreadofdiseasesandthedisappearanceofspecies.也有人預(yù)言會(huì)出現(xiàn)嚴(yán)重的風(fēng)暴、洪澇、干旱、饑荒、疫病和物種的滅絕。However,theattitudeofscie23Ontheotherhand,therearethose,likeGeorgeHambley,whoareopposedtothisview,believethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.在另一方面，還有一些人，像科學(xué)家喬治·漢布利，反對(duì)上面的觀點(diǎn)，他們認(rèn)為我們不必?fù)?dān)心空氣中會(huì)有高含量的二氧化碳。Theypredictthatanywarmingwillbemildwithfewbadenvironmentalconsequences.他們預(yù)言說(shuō)，變暖的情況不會(huì)很嚴(yán)重，對(duì)環(huán)境的影響也不會(huì)太壞。Infact,Hambleystates,"Morecarbondioxideisactuallyapositivething.Itwillmakeplantsgrowquicker;cropswillproducemore;itwillencourageagreaterrangeofanimals-allofwhichwillmakelifeforhumanbeingsbetter."漢布利實(shí)際上是這樣說(shuō)的：“二氧化碳含量的增加實(shí)際上是件好事，它使植物成長(zhǎng)更快，莊稼產(chǎn)量更高，還會(huì)促進(jìn)動(dòng)物的生長(zhǎng)——所有這些都能改善人類的生活?！盿greaterrangeof更大范圍的Ontheotherhand,therearet24ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambley

Dr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto_________上升_.Anincreaseoffivedegreeswouldbea___________災(zāi)難_andcouldbe___________非常嚴(yán)重___.Morecarbondioxideisa__________thing,whichmakescrops_____________產(chǎn)量更多andwillencourage____________________________.goupcatastropheveryseriouspositiveproducemoreagreaterrangeofanimalsThedifferentideasbetweenDr25Doesglobalwarmingmatter?Positiveeffects

Negativeeffects

Doesglobalwarmingmatter?Pos26causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectscausethesealeveltorisePos27causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswillproducemoreagreaterrangeofanimalsmakelifebettercausethesealeveltorisePos28

Greenhousegasescontinuetobuildupintheatmosphere.溫室氣體繼續(xù)在大氣層中聚集。Evenifwestartreducingtheamountofcarbondioxideandothergreenhousegases,theclimateisgoingtokeeponwarmingfordecadesorcenturies.即使我們開(kāi)始減少二氧化碳和其他溫室氣體的含量，在（未來(lái)）幾十年或幾個(gè)世紀(jì)內(nèi)，氣候仍會(huì)持續(xù)轉(zhuǎn)暖。Nooneknowstheeffectsofglobalwarming.沒(méi)有人知道全球變暖帶來(lái)什么樣的影響。Doesthatmeanweshoulddonothing?這是不是意味著我們就不必采取任何措施呢？Or,aretheriskstoogreat?還是說(shuō)，這樣不采取任何措施危險(xiǎn)性會(huì)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