公共英语考试阅读理解题型解析

第页共页最新公共英语考试阅读理解题型解析更多精彩内容请及时____应届毕业生考试网!TheGeneralHouseEffectThegreenhouseeffectisnotanewphenomenon.Scientistshaveknownforcenturiesthatalayerofgasesnaturallysurroundstheearthlikeaninsulatingblanket,trappingthereflectedenergyofthesunandpreventingitfromescapingintospacethatiswhatmakestheearthwarmenoughforpeople,plantsandanimals.However,recenthumanactivityhasboostedconcentrationsofgreenhousegasesandenhancedtheirheat-trappingability.Themanculpritiscarbondioxidewhichscientistsestimateaccountsfornearlyhalfofglobalwarming.Co2isreleasedfromburningfossilfuelsandfromclearingandburningforests.Thereareotherimportantgreenhousegasestooandtheycannotbeignored.CFCs,forexle,mayaccountfor25percentofglobalwarminginthetextcenturyiftheirproductionisnotscaledback.Butcarbondioxideisthepivotalone.TheUNInternationalpanelonClimaticChangenowsaysthatCo2levelscoulddoublewithinin40yearsifpresentratesoffossil-fuelburninganddeforestationcontinue.Thatmeansanaveragetemperatureincreasebetweentwoandfourdegreescentigradeandasea-levelriseofperhapsafootby2050.Nooneknowsforcertainhowlocalweatherwillchangeasaresultofthiswarming.Butonethingisclear-itwillbenopicnic.Indicationsarethattheearthwillbetakeplacenotoverthousandsofyears,butoverdecades.Anditisthespeedofthechange,whichmakesthepreciseimpactsodifficulttopredict.ThemostsophisticatedputerizedclimatemodelsintheUSandUK,agreethatweatheraroundtheworldwillbeemoreirregularandmoreextreme.Ingeneral,temperatureswillbeemoretowardsthepolesthanattheequator.overallrainfallwillalsoincreaseashighertemperaturesboostevaporationfromtheseas.Butthedistributionofprecipitationwillshift.Someareaswillbeewetter,otherswillbedrier.Inmiddlelatitudes,Climatezoneswillmarchpoles-wards.Intropicalandsubtropicalpartsofthethirdwould,warmingwillbelessbuttheimpactonarelativelystableclimatewillbegreater.Globalwarmingwillalsocauseoceanlevelstorisethoughnot,aspopularwisdomhasit,duetotheAntarcticicecapmelting.Ifthiscatastropheoccursitwillnotbeforatleastanothercentury.Instead,sealevelswillrisesimplybecausewaterexpandsasitwarms.peoplelivinginlow-lyingcoastalregionswillbeindanger.Theworld’sgreatriverdeltas,hometomillionsinAsiaandLatinAmericaandcontainingsomeoftheThirdWorld’srichestfood-growingland,couldbeebrackishgraveyards.6.Whichgasisthemostresponsibleforglobalwarming?A.CarbonDioxide.B.CFCs.C.Greenhouses.D.othergasesintheatmosphere.7.Whatwillhappenifmancontinuestoburnfossilfuelsandforestsatpresentrates?A.Allfossilfuels,likecoal,oilandgas,willrunout.B.Deforestationwillgiverisetothelossofco2.C.ThetemperaturewillincreasetwotofourdegreesFahrenheit.D.Theriseofsea-levelwillreachaboutafootby2050.8.Whyisthepreciseimpacttheglobalwarmingwillexertonlocalweatherhardtopredict?A.Becausethegreatchangesintemperaturewilltakeplaceinjustdecades.B.Becausethecourseofchangeswilllastthousandsofyears.C.Becausepeoplearenotsurewhethertheearthwillbewarmerthanbefore.D.Becausetherearemanyotherfactorsinvolvedinthischange.9.Whichofthefollowingistrueaccordingtothepassage?A.Theearth,asawhole,willbeemuchwetter.B.Thetemperaturearoundequatorwillrisemorethanaroundthepoles.C.Theamountofrainfallwillbethesamefromplacetoplace.D.Theweatheraroundtheworldwillbemoreunusualinthenextfewdecades.10.ItcanbeconcludedthatA.TheriseofoceanlevelsisduetotheAntarcticicecapmelting.B.Thetemperatureincreasewilltakeagradualcourse.C.Humanbeingswillhavetosuffermorefromenviro____entaldamage.D.Withoutgreenhousegasestheearthwouldbeextremelyhot.参考答案6.A第一段有这样一句话：themainculpritiscarbondioxide,whichscientistsestimateaccountsfornearlyhalfofglobalwarming从这句话可以看出，二氧化碳是全球变暖的罪魁祸首，对全球变暖负有重大责任。7.D结合国的环境变化国际小组告诉我们：假如仍以目前的速度使用燃料并滥伐森林，到2023年，地球温度将会上升2-4摄氏度，海平面也将上升一英尺。所以C是错误的。A文章没有提到燃料是否会用尽。B滥伐森林不但不会使二氧化碳减少，反而会使二氧化碳越来越多。8.A第三段最后一句话告诉我们这道题的正确答案。Itisthespeedofthechange,whichmakesthepreciseimpactsodifficulttopredict.地球的温度在十年间就升高了，变化发生的速度如此之快，使人很难预测到地球变暖对当地气候的影响。9.D文章的第四段指出：在美国和英国有一个非常复杂的计算机化模型，这一模型得出了世界气候越来越变化无常、越来越不规律这一结论。A一些地方会更加潮湿，一些地方会更加枯燥，而不是选项中所说的地球整体上会变的.更加潮湿。B温度在两极的增长幅度大于在赤道的增长幅度，而不是赤道的温度增长幅度大于两极的增长幅度。C雨量分布将发生变化，而不是选项中所说的各地的降水量一样。10.C文章的末尾告诉我们：环境的污染引起的全球变暖、海平面上升、气候异常以及雨量分布不均，最终给人类带来更多的不幸。A海平面的上升并不像人们认为的那样是由于南极冰层融化引起的。Translation11.Globalwarmingcoulddisrupttheabilityofalargeportionoftheworld’soceanstoabsorbcarbondioxidefromtheatmosphere,settingoffaviciouscycleinwhichtheearthgetsevenhotter,researcherssaid.(setoff使爆炸,出发;viciousadj.恶的,堕落的;researcherssaid注意翻译顺序)12.ThesewatersaroundAntarcticamakeup10percentoftheworld’soceansandplayasignificantroleinsoakingupcarbondioxide,agreenhousegasseenasoneofthemaincausesofglobalwarming.(Waters水域;soakup吸收;注意过去分词短语的翻译)13.Sincecarbondioxidecontributestoglobalwarming,scientistsbelieveagrowingbuild-upofthegaswouldmaketheenviro____entalproblemincreasinglyworse.(contributeto起作用，有助于)14.IfglobalwarmingcontinueswithincreasedprecipitationintheSouthernocean,therewillbemorestratificationandthatwi