高中英语选修六-unit4-Warming-up-and-reading

Unit4GlobalWarmingWarmingUpandReadingExtremeheat酷暑

Canyouthinkofsomenaturaldisasters(自然灾害)becauseoftheextremeheat?drought(旱灾)firefloodhurricane/typhoonIfeelhot!.×√Low-carbonlife〔低碳生活〕TheEarthisBecomingWarmer--ButDoesItMatter?地球在变暖——要不要紧？ReadingNewWordsandexpressionstemperature温度onedegreeFahrenheit华氏一度explore探索humanactivities人类活动phenomenon现象subscribeto同意，赞成fossilfuels矿物燃料byproduct副产品“greenhouse”gases温室气体atmosphere大气methane甲烷，沼气degreeCelsius摄氏度quantitiesof大量的accuratemeasurements精确的测量data资料，数据catastrophe大灾难beopposedto反对environmentalconsequences环境影响agreatrangeof大量的evenif即使keepon继续

ScanningWho

：_____________Threescientists:____________________________

SophieArmstrongDrJaniceFoster;CharlesKeeling;GeorgeHambley;Whatarethetwographsabout?Graph1showsthetemperaturedifference(温度差异)from1860to2000.Graph2showsthecarbondioxidecontent(二氧化碳含量)intheatmospherefrom1957to1997.Graph1:Graph2:CarefulReadingParagraph1Paragraphs2&5Paragraph6Part1Part2Part4MainideaofthetextPart3Paragraph7Howglobalwarmingcomesabout?(全球变暖是怎样产生的)Twodifferentopinionsaboutglobalwarming.Theearthisbecomingwarmer.Shouldwedoanything?Duringthe20thcentury,thetemperatureoftheearthdidn’tseemtoincreasemuch.2.Thereisnodoubtthatglobalwarmingiscausedbythehumanactivities.3.Notallscientistsbelievethattheincreaseintheearth’stemperatureisduetotheburningoffossilfuels.Trueorfalse

4.Thelevelsofcarbondioxidehaveincreasedgreatlyoverthelast100—150years.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodtotheearth.6.Weknowtheeffectsofglobalwarming.Howhasglobalwarmingcomeabout(产生)?1.Humanactivity

Theproblembeginswhenhugequantitiesofextracarbondioxide(大量的二氧化碳)areaddedintotheatmosphere.…isduetotheburningoffossilfuels…2.

GreenhousegasesParagraph2&3carbondioxideFossilFuel(矿物燃料)coaloilgasglobalwarming●●●●●●produce二氧化碳Haveyoueverseenagreenhouse?Methane['mi:θein]

WhatareGreenhousegases?Therearegasescalled“greenhousegases”,including…CarbondioxideWatervaporTheytraptheheatfromthesunandwarmtheearth.Dr.Foster:_____________________GeorgeHambley:_________________Whatdothescientiststhinkaboutglobalwarming?Dotheyagreewithoneanother?Itwouldbeacatastrophe.weshouldnotworryaboutit.Theyhavequitedifferentattitudestowardsthisissue.Paragraph6Doesglobalwarmingmatter?Positiveeffects〔正面影响〕Negativeeffects(负面影响〕causethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectstsunamiThesealeveltorise.tornadosSeverestormsdroughtsfaminesthespreadofdiseasesdestructionofspeciescausethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswillproducemoreagreaterrangeofanimalsmakelifebetterSummary

HowEffects

1.Humanactivities2.GreenhousegasesCarbondioxidecausethesealeveltoriseseverestormsfloodsdroughtsfaminesthespreadofdiseasesdisappearanceofspeciesPositiveeffectsNegativeeffectsmakeplantsgrowquickercropswill