Haveyoueverflownonanairplane?Beforeyouleftyou41____everythingyouwouldneedforyour42____inasuitcase.Mostsuitcasesthattravelonanairplanehavetobe43____inspecialareasawayfromthepassengers.Ithelpskeeptheplane44.Thisalsofreesupmoreroomforpassengersandmakesthemmore45____.

   Whileyouwereflyingintheairplane^youmighthavehad46____lookingoutofthewindoworlisteningtomusic.Yoursuitcasesthoughdidn'tgetthesame47.Wherehadtheygotie?Mostairportshave(行李处理系统)that____48____yourbaggageduringyourtrip.

   Thesystemsdifferfromairporttoairportbutbaggagehandlershavethree49____jobs.Firsttheymoveyourbaggagefromthecheck-inareatothe50____you’11becatching.Thenyourbaggage51____sitwithalltheotherpassengers’baggageincertainareasofyourairplane.Secondifyouhaveto52____airplanessomewhereduringyourtripyourbaggagewillbemovedtothenewairplaneyouaregoingto53____.Finallytheywillmoveyourbaggagefromtheairplanetoa54____areaatyourfinaldestination(目的地).

   Ofcoursethesystemsmustmakesurebaggagetraveltothe55____airplanes.Evensomistakeshappeneveryday.Sometimesbaggagemay56____theirairplane.Whenthishappenstheymaybefound57____andsentonthenextavailableairplane.Somebaggagethoughgets58____forlongerperiodsoftimeandmayendupinoffsitestoragefacilotise(异地仓储设成点).Baggagethatcanneverbe59____totheirownersmaybegivenawaytocharity60____theycanbesoldatspecialauctions（拍卖会).

41.A.forgot   B.packed

   C.rewrote   D.discovered

42.A.trip   B.visit   C.house   D.village

43.A.cleaned   B.shared   C.stored   D.repaired

44.A.safe   B.fixed

   C.heavy   D.organized

45.A.careful   B.beautiful

   C.confident   D.comfortable

46.A.fun   B.money   C.courage   D.patience

47.A.education   B.treatment

   C.knowledge   D.experiment

48.A.makeuseof   B.takecareof

   C.catchupwith   D.breakawayfrom

49.A.easy   B.interesting

   C.Tnain   D.well-paid

50.A.bus   B.boat   C.train   D.airp