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时间:2020-04-01
《2012届高考英语二轮专题复习 阅读理解部分之限时训练(十九).doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、2012届高考英语二轮专题复习精品阅读理解部分之限时训练(十九)阅读理解Australianscientistsaretryingtogivekangaroo-stylestomachstocattleandsheepinabidtocuttheemissionofgreenhousegasesblamedforglobalwarming.Thankstospecialbacteriaintheirstomachs,kangaroofartscontainnomethane(甲烷)andscientistswant
2、totransferthatbacteriatocattleandsheepwhoemitlargequantitiesoftheharmfulgas.Whiletheusualimageofgreenhousegaspollutionisabillowingsmokestackpushingoutcarbondioxide,livestockpassingwindcontributeasurprisinglyhighpercentageoftotalemissionsinsomecountries."Fourte
3、enpercentofemissionsfromallsourcesinAustraliaisfromentericmethanefromcattleandsheep,"saidAtholKlieve,aseniorresearchscientistwiththeQueenslandstategovernment."AndifyoulookatanothercountrysuchasNewZealand,whichhasgotamuchhigheragriculturalbase,they'reactuallyup
4、around50percent,"hesaid.Researcherssaythebacteriaalsomakesthedigestiveprocessmuchmoreefficientandcouldpotentiallysavemillionsofdollarsinfeedcostsforfarmers.Butitwilltakeresearchersatleastthreeyearstoisolatethebacteria,beforetheycanevenstarttodevelopawayoftrans
5、ferringittocattleandsheep.Anothergroupofscientists,meanwhile,hassuggestedAustraliansshouldfarmfewercattleandsheepandjusteatmorekangaroos.Theideaiscontroversial(争议),butabout20percentofhealthconsciousAustraliansarebelievedtoeatthenationalsymbolalready."It'slowin
6、fat,it'sgothighproteinlevelsandit'sverycleaninthesensethatbasicallyit'stheultimatefreerangeanimal(散养动物),"saidPeterAmptoftheUniversityofNewSouthWales'sinstituteofenvironmentalstudies.53.Accordingtothepassage,globalwarmingisnowmainlycausedby_____.A.methaneB.carb
7、ondioxideC.livestockpassingwindD.notmentioninthispassage54.Whatdoestheunderlinedphrase“theidea”(paragraph9)referto?A.Australiansshouldgivekangaroo-stylestomachstocattleandsheep.B.Thebacteriacouldmakethedigestiveprocessmuchmoreefficient.C.Australiansshouldfarmf
8、ewercattleandsheepandjusteatmorekangaroos.D.Thebacteriacouldpotentiallysavemillionsofdollarsinfeedcostsforfarmers.55.SomeAustraliansbegintoeatkangaroosbecause_____.A.Thekangaroos’f
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