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时间:2020-05-24
《2020年高考英语5-6月最新全国卷模拟题汇编2 阅读理解之说明文(二)(原卷word版).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、2020年高考英语5-6月最新全国卷模拟题汇编专题02阅读理解之说明文1.(2020届江西省重点中学盟校高三第一次联考)Scientistssaythey'vedevelopedasystemusingmachinelearningtopredictwhenandwherelightingwillstrike.TheresearchwasledbyengineersfromtheSwissFederalInstituteofTechnologyinLausanne,Switzerland.Europeanresearchershaveest
2、imatedthatbetween6,000and24,000peoplearekilledbylightningworldwideeachyear.Thestrikescanalsocausepoweroutages,destroyproperty,damageelectricalequipmentandstartforestfires.Forthesereasons,climatescientistshavelongsoughttodevelopmethodstopredictandcontrollightning.IntheUnite
3、dStatesandotherplaces,ground-basedsensingdevicesareusedtoidentifystrikesastheyhappen.But,nosystemhasbeencreatedtoeffectivelypredictlightning.Thesystemtestedintheexperimentsusedacombinationofdatafromweatherstationsandmachinelearningmethods.Theresearchersdevelopedaprediction
4、modelthatwastrainedtorecognizeweatherconditionsthatwerelikelytocauselightning.Themodelwascreatedwithdatacollectedovera12-yearperiodfrom12Swissweatherstationsincitiesandmountainareas.Thedatarelatedtofourmainsurfaceconditions:airpressure,airtemperature,relativehumidityandwin
5、dspeed.Theatmosphericdatawasplacedintoamachinelearningalgorithm(算法),whichcomparedittorecordsoflightningstrikes.Researcherssaythealgorithmwasthenabletolearntheconditionsunderwhichlightninghappens.AmirhosseinMostajabiisaPhDstudentattheinstitutewholedthedevelopmentofthemethod
6、.Hesaid,“currentsystemsforgatheringsuchdataareslowandcomplexandrequirecostlycollectionequipmentlikeradarorsatellites.”“Ourmethodusesdatathatcanbeobtainedfromanyweatherstation,”Mostajabisaid.“Thiswillimprovedatacollectioninveryremoteareasnotcoveredbyradarandsatelliteorinpla
7、ceswherecommunicationsystemshavebeencut,”beadded.TheresearchersplantokeepdevelopingthetechnologyinpartnershipwithaEuropeaneffortthataimstocreatealightningprotectionsystem.TheeffortiscalledtheEuropeanLaserLightningRodproject.8.Whyhaveclimatescientiststriedtopredictandcontro
8、llighting?39/39A.Tocollectrelativedata.B.Toreducethedestructionlightninghasbeencausing.C.
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