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1、历年真题阅读理解10年06月PassageOneQuestions57to61arebasedonthefollowingpassage.Youneverseehim,butthey'rewithyoueverytimeyoufly.Theyrecordwhereyouaregoing,howfastyou'retravelingandwhethereverythingonyourairplaneisfunctioningnormally.Theirabilitytowithstandalmostanydisaster
2、makesthemseemlikesomethingoutofacomicbook.They'reknownastheblackbox.Whenplanesfallfromthesky,asaYemeniairlinerdidonitswaytoComorosIslandsintheIndiaoceanJune30,2009,theblackboxisthebestbetforidentifyingwhatwentwrong.SowhenaFrenchsubmarine(潜水艇)detectedthedevice'sh
3、omingsignalfivedayslater,thediscoverymarkedahugesteptowarddeterminingthecauseofatragedyinwhich152passengerswerekilled.In1958,AustralianscientistDavidWarrendevelopedaflight-memoryrecorderthatwouldtrackbasicinformationlikealtitudeanddirection.Thatwasthefirstmodefo
4、rablackbox,whichbecamearequirementonallU.S.commercialflightsby1960.Earlymodelsoftenfailedtowithstandcrashes,however,soin1965thedevicewascompletelyredesignedandmovedtotherearoftheplane—thearealeastsubjecttoimpact—fromitsoriginalpositioninthelandingwells(起落架舱).The
5、sameyear,theFederalAviationAuthorityrequiredthattheboxes,whichwereneveractuallyblack,bepaintedorangeoryellowtoaidvisibility.Modernairplaneshavetwoblackboxes:avoicerecorder,whichtrackspilots'conversations,andaflight-datarecorder,whichmonitorsfuellevels,enginenois
6、esandotheroperatingfunctionsthathelpinvestigatorsreconstructtheaircraft'sfinalmoments.Placedinaninsulated(隔绝的)caseandsurroundedbyaquarter-inch-thickpanelsofstainlesssteel,theboxescanwithstandmassiveforceandtemperaturesupto2,000°F.Whensubmerged,they'realsoabletoe
7、mitsignalsfromdepthsof20,000ft.ExpertsbelievetheboxesfromAirFranceFlight447,whichcrashednearBrazilonJune1,2009,areinwaternearlythatdeep,butstatisticssaythey'restilllikelytoturnup.Intheapproximately20deep-seacrashesoverthepast30years,onlyoneplane'sblackboxesweren
8、everrecovered.注意：此部分试题请在答题卡Ⅱ上作答57.Whatdoestheauthorsayabouttheblackbox?DA)Itensuresthenormalfunctioningofanairplane.B)Theideaforitsdesigncomesfromacomicbook.C)Itsabil
