高三英语Unit 9 Lesson 34Saving the earth.ppt

unit9lesson34savingtheearth pre main vocabu analy chart close discuss home proposal true help help earth theareaofdesertisgrowingandgoodsoilisgraduallylost mainidea water waterpollutioniscausedbyman swaste air chemicalsinthesmokecausealotofdamageandseriousaccidentstakeplacefromtimetotime choosethebestanswers 1 whichofthefollowingstatementsisnottrueaccordingtothepassage a farmersareincreasingthenumbersoftheircattle b farmersarelimitingthenumbersoftheircattle c heavyrainsandstrongwindsaredestroyingthevaluablesoil d fewertreesarelefttoholdthesoilinplaceonthehillside 2 itissafertoputupanuclearpowerstationaslongas a itisbuiltinthefarawayareab itisworkedcompletelybycomputersc noradiationleaks 泄漏 d nopeoplelivenearby 4 the1stpartofthepassageismainlyabout a thereasonswhytheareaofdesertisgrowingb thenumbersofcattlefarmersshouldkeepc thevaluablesoilstrongwindsblowawayd thedamagerainsandwindsbringabout5 accordingtothetext aretheworstenemyofnature a cattleb humansc desertsd chemicals 3 whatisthepossiblereasonwhythemediterraneancan tcleanitself a onequarteroftheshoresarepolluted b alotofdiseasesarepresentinthewater c itliesbetweeneuropeandafrica d ithasonlyonenarrowentrancetotheocean trueorfalse 1 manypartsoftheworldwithlargepopulationsandplentyofcropshavebecomedeserts t 2 landmaybecomepooriffarmersdonotlimittheircattle t 3 goodsoilisgraduallylostthesedaysastreesarebeingcutdown t trueorfalse 4 airpollutionandwaterpollutionarethetwocausesoftheproblemthatmanypartsoftheworldhavebecomedeserts f 5 chemicalsinthesmokefrompowerstationscantravelhundredsofmilesbeforefallingdowntotherain f trueorfalse 6 afterabadaccidentatanuclearpowerstation 50 ofthetreesingermanyweredamaged 7 thewriterusestheexamplesoftheaccidentsinbothindiaandrussiatoexplainhowwaterispolluted 8 onceoceansarepolluted theyarenotabletocleanthemselves f f f vocabulary passage1 alargeareaoflandcoveredwithsand 2 atonetime 3 thingthatproducesaresult 4 beunsuccessfulorunable 5 tokeepbeloworatacertainpoint 6 stepbystep 7 intherightorproperplace 8 becarrieddownbythewind desert once cause fail limit gradually inplace blowaway passage2 9 manytimes 10 becomeblind timeandtimeagain loseone ssight passage3 11 landalongtheedgeofasealake etc 12 appearinginaplace13 makethingsdirty14 toflowquickly shore present dirty pour earth air water mostseriousproblems earth theareaofdesertisgrowing air chemicalsinsmokecausealotofdamage travel falltothegroundintherain water wastefromfactoriesandcities pollution causes results notenoughraincattle treesbecutdown havelessfarmland smokefromfactories powerstation cars accidentsatnuclearpowerstationsandfactories forestsbedestroyed fishbekilled doharmtopeople wastefromfactoriesandcities livingthingsbekilled havelessdrinkingwater nowheretoswim earthairwater 1 theareaofdesertintheworldisgrowing onecauseistheincreaseofthenumberof whicheatupgrass withoutgrass landturnsinto problemisthattreesarecutdown thereisnothingto thesoil strongwindsalso awaythesoilonthetopofthefields 2 airpollutioncomesfromfactories powerstationsandcars inthesmokefrompowerstationscandestroytreesandkillthefishintherivers lakesandseas timeandtimeagainthereareseriousradiationaccidentsthat theair manypeoplewere orkilled 3 wastefromfactoriesandcitiescanalsopollutewater oceansareabletoclean butcertainseas oncetheyarepolluted arenotabletodoso lakesalsohavethesame somelakeshavebeenseriously alotofdiseasesare inthem sotheyarenotsafefor andlotsofanimalsandplantsinthemhavebeenkilled cattle desert another hold blow chemicals pollute injured themselves problems polluted present swimming whatstepsshouldwetaketosavetheearth whatwouldhappenifsuchpollutioncontinued discussion homework 假如你是班长 现在要你代表全班同学给市长写一封信反映学校前小河被污染的情况 内容应包括以下几点 1 过去河水清澈见底 还有小鱼在水中游来游去 2 现在河水又臭又脏 水面上到处都漂着各种垃圾 3 河水被污染的原因是沿河几家工厂大量排放污水和沿河居民乱丢垃圾 4 希望政府能采取一些措施来解决这一问题 5 呼吁人们保护我们的环境 字数 100字左右dearmayor aproposal don tuseone offchopsticks lunch boxesandcups 2 don tusepapertissue