题目内容：
根据以下材料，回答题
TheDayaLanguageDied
WhenCariosWestezdiedattheageof76,alanguagedied,too.Westez,morecommonlyknownasRedThunderCloud,wasthelastspeakeroftheNativeAmericanlanguageCatawba.
AnyonewhowantstohearthesongsoftheCatawbacancontacttheSmithsonianInstitutioninWashington,D.C.,where,backinthe1940s,RedThunderCloudrecordedaseriesofsongsforfuturegenerations.（46）TheyareallthatisleftoftheCatawbalanguage.Thelanguagethatpeopleusedtospeakisgoneforever.
Weareallawareofthedangerthatmodernindustrycancausetheworld'secology(生态).
However,fewpeopleareawareoftheimpactwidelyspokenlanguageshaveonotherlanguagesandwaysoflife.Englishhasspreadallovertheworld.Chinese,Spanish,Russian,andHindihavebecomepowerfullanguagesaswell.（47）Whenthishappens,hundredsoflanguagesthatarespokenbyonlyafewdieout.
Scholarsbelievetherearearound6,000languagesaroundtheworld,butmorethanhalfofthemcoulddieoutwithinthenext100years.Therearemanyexamples.ArakiisanativelanguageoftheislandofVanuatu,locatedinthePacificOcean.Itisspokenbyonlyafewolderadults,solikeCatawba,Arakiwillsoondisappear.ManylanguagesofEthiopiawillhavethesamefatebecauseeachonehasonlyafewspeakers.（48）IntheAmericas,100languages,eachofwhichhasfewerthan300speakers,aredyingout.
RedThunderCloudwasoneofthefirsttorecognizethedangeroflanguagedeathandtotrytodosomethingaboutit.HewasnotactuallybornintotheCatawbatribe,andthelanguagewasnothismothertongue.（49）ThesongshesangfortheSmithsonianInstitutionhelpedtomakeNativeAmericanmusicpopular.Nowheisgone,andthelanguageisdead.
Whatdoesitmeanfortherestofuswhenalanguagedisappears?Whenaplantinsectoranimalspeciesdies,itiseasytounderstandwhathasbeenlostandtoforthebalanceofthenaturalword.However,languageisonlyaproductofthemind.Tobethelastremainingspeakerofalanguage,likeRedThunder,mustbeapeculiarlylonelydestiny,almostasstrangeandterribleasbeingthelastsurvivingmemberofadyingspecies.（50）
回答(46)题 A．Somepeoplemightwanttolearnsomeofthesesongsbyhearts.
B．InNewGuineathereisanextremelyrichsourceofdifferentlanguage,butmorethan100ofthemareindangerofextinction(灭绝).
C．However,hewasafrequentvisitortotheCatawbareservationinSouthCarolinawherehelearnedthelanguage.
D．Theselanguagesdon'thavemanynativespeakers.
E．Fortherestofus,whenalanguagedies,welosethepossibilityofauniquewayofseeinganddescribingtheworld.
F．Astheselanguagesbecomemorepowerful,theiruseastoolsofbusinessandculture
Increases.
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