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1、智课网TOEFL备考资料北极石油储量可供全球用三年一托福阅读机经背景TheArcticCircleholdsanestimated90billionbarrelsofrecoverableoil,enoughsupplytomeetcurrentworlddemandforalmostthreeyears,theUSGeologicalSurveyforecastonWednesday.Thegovernmentagencyalsosaidtheareacouldcontain1,670trillioncubicfeet(Tcf)ofnaturalgas."Beforewecanmake
2、decisionsaboutourfutureuseofoilandgasandrelateddecisionsaboutprotectingendangeredspecies,nativecommunitiesandthehealthofourplanet,weneedtoknowwhat'soutthere,"saidUSGSDirectorMarkMyers."Withthisassessment,we'reprovidingthesameinformationtoeveryoneintheworldsothattheglobalcommunitycanmakethosediffi
3、cultdecisions,"hesaid.FrankO'Donnell,presidentofthenonprofitgroupCleanAirWatch,saidnotonlydopolarbearsandotherwildlifewithintheArcticCirclefacelosingtheirhabitatduetoglobalwarming,theywouldbehurtbycompaniessearchingforoil.The90billionbarrelsofoilexpectedtobeintheArcticcouldmeetcurrentworldoildema
4、ndof86.4millionbarrelsadayforalmostthreeyears.TheArcticaccountsforabout13percentoftheworld'sundiscoveredoil,30percentoftheundiscoverednaturalgasand20percentoftheundiscoverednaturalgasliquids,theagencysaidinthefirstpubliclyavailablepetroleumresourceestimateoftheArcticCircle.Morethanhalfoftheundisc
5、overedoilresourcesareestimatedtooccurinjustthreegeologicprovinces:ArcticAlaska(30billionbarrels),theAmerasiaBasin(9.7billionbarrels)andtheEastGreenlandRiftBasins(8.9billionbarrels).Morethan70percentoftheundiscoverednaturalgasislikelytobeinthreeprovinces:theWestSiberianBasin(651Tcf),theEastBarents
6、Basins(318Tcf)andArcticAlaska(221Tcf),theUSGSsaid.Energycompanieshavealreadyfoundmorethan400oilandgasfieldsnorthoftheArcticCircle.Thediscoveredfieldsaccountforapproximately40billionbarrelsofoil,morethan1,100Tcfofgasand8.5billionbarrelsofnaturalgasliquids.美国地质勘探局于本周三发布报告称，目前北极圈内可开采石油储量预计为900亿桶，可满足
7、全球近三年的石油需求量。另外，据该政府机构介绍，北极圈内的天然气储量为47万亿立方米。地质勘探局局长马克•梅尔斯说：“在我们就未来如何使用石油和天然气以及如何保护濒危物种、土著居民和地球健康等问题做出决定之前，要知道那里都有些什么。”“这一估测让全世界的人们都认识到了目前的形势，所以大家可以一起来做那些艰难的决定。”非赢利组织“洁净空气观察”主席弗兰克•奥•多尼尔说，如今，北极圈内的极地熊和其它野生动物不仅因全球变暖正面临无处栖息的
