Unit4Globalwarming隨著經(jīng)濟(jì)的發(fā)展，更多的溫室氣體被排放，其中大約70%為二氧化碳，全球氣候變暖是目前人類面臨的最大環(huán)境問題。Withthedevelopmentofeconomy，moreandmoregreenhousegasesarebeingdischargedintothemakesupabout70%ofthegreenhousegases，whichisconsideredtobeoneofthegreatestcausesofglobalhasharmfuleffects，causingthesealeveltoriseandmanynaturaldisasterstostrike.Sowemusttakeeffectivemeasurestosaveour，weshouldusemorecleanenergyandlesscoaland，weshouldgotoworkonfootorbybusinsteadofdrivingacarifpossible.Third，weshouldplantmoretrees，becauseplantscanturnCO2intoimportantly，weshouldformthehabitofsavingenergyinourdailylife.1．dischargevt. 放出；流出；發(fā)射2．takeeffectivemeasures 采取有效措施1．Whatcausesglobalwarming?2．Howmanymeasuresmustwetakeaccordingtothepassage?【答案】does..SectionⅠWarmingUp&Reading—Preparing根據(jù)提示寫出下列單詞1．consumevt. 消費(fèi)；消耗；吃完2．mildadj. 溫和的；溫柔的；淡的3．subscribevi. 同意；捐贈；訂閱vt. 簽署(文件)；捐助4．quantityn. 量；數(shù)量5．tendvi. 趨向；易于；照顧vt. 照顧；護(hù)理6．opposevt. 反對；反抗；與(某人)較量7．statevt. 陳述；說明8．consequencen. 結(jié)果；后果；影響9．rangen. 種類；范圍10．glancevi. 看一下；掃視n. 一瞥看單詞學(xué)構(gòu)詞consequence中-ence是名詞后綴，如existence，reference，dependence等。根據(jù)提示補(bǔ)全下列短語1．subscribeto 同意；訂閱2．comeabout 發(fā)生；造成3．quantitiesof 大量的4．goup 漲價(jià)；上漲5．resultin 導(dǎo)致6．beopposed to 反對7．keepon 繼續(xù)8．compare...to 與……相比根據(jù)提示補(bǔ)全下列教材原句1．Thatprobablydoesnotseemmuchtoyouorme，butitisarapidincreasewhencomparedtoothernaturalchanges．這個(gè)數(shù)值對你我來說可能是無所謂的，但是跟其他自然變化相比較而言，這卻是一種快速的增長。2．Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)andthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫無疑問，地球是在變暖(見表一)，而地球變暖正是人類活動(dòng)導(dǎo)致的，并非是一種無規(guī)律的自然現(xiàn)象。3．Evenifwestartreducingtheamountofcarbondioxideandothergreenhousegases，theclimateisgoingtokeeponwarmingfordecadesorcenturies.即使我們開始減少二氧化碳和其他溫室氣體的含量，在(未來)幾十年或幾個(gè)世紀(jì)內(nèi)，氣候仍會持續(xù)轉(zhuǎn)暖。4．Withoutthe‘greenhouseeffect’，theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.如果沒有“溫室效應(yīng)”，全球的溫度會比現(xiàn)在低33攝氏度左右。閱讀P26－27教材原文，選擇最佳答案。1．Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A．DrJaniceFoster.B．CharlesKeeling.C．GeorgeHambley.D．SophieArmstrong.2．Theauthorprobablyagreesthat．A．a(chǎn)ctuallyglobalwarmingisgoodformanB．weshoulddonothingabouttheglobalwarmingC．catastropheswillhappeniftheglobekeepsonwarmingD．a(chǎn)lotremainstobefoundoutabouttheeffectsofglobalwarming3．What'sthemainideaofthesecondparagraph?A．Thecauseoftheearth'sbecomingwarmer.B．Theconsequenceofburningfossilfuels.C．Theincreaseofcarbondioxide.D．Globalwarmingwillgoon.4．AccordingtoGeorgeHambley，．A．globalwarmingisaveryseriousproblemB．there'snoneedtoworryaboutglobalwarmingC．thelevelsofCO2intheairwillbecomelowerinthefutureD．moreanimalswillmakegreenhousegasesdecrease5．Wecaninferfromthetextthat．A．thedebateabouttheeffectsofglobalwarminghasnotbeensettledB．thegreenhouseeffectistheresultofpeople'sactionsC．a(chǎn)llscientiststhinkitisimportanttoreducetheamountofCO2intheatmosphereD．reducinggreenhousegaseswillimmediatelydecreasetheearth'stemperature【答案】1－5BDABA閱讀P26－27教材原文，在空白處填入適當(dāng)內(nèi)容(1個(gè)單詞)或括號內(nèi)單詞的正確形式。Duringthe20thcenturythetemperatureoftheearth1.(rise)aboutonedegreehasthiscome2.？Allscientistssubscribe3.theviewthatitishumanactivity4.hascausedtheglobal5.(burn)offossilfuelslikecoal，naturalgasandoilhasresultedintheincreaseincarbondioxide，quantitiesofwhich6.(add)intotheglobaltemperaturegoesupwithmoreheatenergy7.(tend)tobetrappedintheattitudesofscientiststowardstherisearecompletelydifferent.Ontheonehand，somethinkthetrendwouldbe8.catastrophe.Ontheotherhand，some9.(oppose)totheabovepredictthatany