字典翻译 问答 小学 英语 【AnewreportsaysseaiceintheArcticOceanismeltingmorequicklythanexpected.Americanscientistssaytheiceismeltingevenfasterthancomputerprogramshadestimated.ScientistsknowthatclimatechangehasamajoreffectontheArcti】
问题标题:
【AnewreportsaysseaiceintheArcticOceanismeltingmorequicklythanexpected.Americanscientistssaytheiceismeltingevenfasterthancomputerprogramshadestimated.ScientistsknowthatclimatechangehasamajoreffectontheArcti】
问题描述:

AnewreportsaysseaiceintheArcticOceanismeltingmorequicklythanexpected.Americanscientistssaytheiceismeltingevenfasterthancomputerprogramshadestimated.
ScientistsknowthatclimatechangehasamajoreffectontheArcticOceanpartlybecauseseaiceisdisappearing.Theyalsoknowthatareasofopenseawaterareexpanding.Suchareasareknowntotakeinsunlightandincreasetemperatures.ScientistssaythishashelpedtocausethelossoftheArctic’sicecover.
Forthestudy,theAmericanscientistscomparedeighteencomputerprogramswithobservationsmadebysatellitesandotherinstruments.TheIntergovernmentalPanelonClimateChangeusedthecomputerprogramstoprepareits2007estimatesofclimatechange.
ThecomputerprogramsgaveestimatesoftheamountoficeintheArcticOceaninthemonthofSeptember.SeptemberiswhentheArctichastheleastice,afterthewarm,summermonths.Thecomputerestimatessuggestedanicelossoftwoandahalfpercentforeveryten-yearperiodbetween1953and2006.  
NewerstudiesoftheArctichaveusedinformationgatheredbyaircraft,satellitesandships.ThisinformationshowedalossofSeptembericecoverofalmosteightpercentforeveryten-yearperiodbetween1953andlastyear.Thismeanstheiceisdisappearingaboutthirtyyearsfasterthanthecomputerprogramsestimated.
ThescientistssaytheprogramsmightnothaverecognizedthefulleffectofincreasedcarbondioxideandothergasesinEarth’satmosphere.Theysaytheirstudysuggeststhegasesmayhavemoreofaneffectthanhadbeenthought.
小题1:ItisreportedthatseaiceintheArcticOceanismeltingmorequicklythanexpectedmainlybecause_________.

A.climatechangeB.seaice’sdisappearance
C.seawater’sexpansionD.thelossoftheArctic’sicecover
小题2:HowdidthescientistsdrawtheconclusionthatseaiceintheArcticOceanismeltingmorequicklythanexpected?A.ThescientistshavebeenobservingtheArcticOceanformanyyears.B.Thescientistshavecomparedthecomputerprogramswithobservationmadebysatellitesandotherinstruments.C.Thescientistsha

范峰南回答:
  小题1:A小题2:B小题3:D小题4:C小题5:C   略
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