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  CyclingBothchildrenandadultsridebicyclesforfunandforexercise.Somepeopleusebicyclesfortransportationbecauseitislessexpensivethantravelingbycar.16___.Thesportofcyclingconsistsofracesthatareheldmostlyo

  Cycling

  Bothchildrenandadultsridebicyclesforfunandforexercise.Somepeopleusebicyclesfortransportationbecauseitislessexpensivethantravelingbycar. 16___.

  Thesportofcyclingconsistsofracesthatareheldmostlyonroadsortracks. 17 .ThefirstrecordedraceintheUnitedStateswasheldin1878inBostonMassachusetts.ThemostfamousbicycleracetheTourdeFrancebeganin1903.CyclingisalsoapartoftheSummerOlympicGames.

  Sportcyclingincludesroadracesformenwomenandchildren.Someracescovershortdistancesof2.5to3miles.__18 .Astageraceconsistsofaseriesofracesheldoverseveraldaysorevenweeks.

  Timetrials(计时赛)areatypeofcompetitioninwhichcyclistsdonotracedirectlyagainsteachother.Insteadindividualcyclistsorteamsaretimedastheyrideseparatelyoveracertaindistance.__19__.Moststageracesincludetimetrials.

  Severaltypesofbicycleracesareheldonanoval(椭圆形的)track.Thetrackmaybeeitherindoorsoroutdoors.Inthehigh-speedracescyclistscompeteagainsteachotheroverashortdistance.Thepursuit(追逐赛)isaneventinwhichcyclistsstartonoppositesidesofthetrackandtrytocatcheachother. 20 .Themotorcyclecutsthroughthewindwhichnormallyslowsabicycledown.Asaresultcyclistscangomuchfasterthantheycaninotherraces.

  A.Ittakesthreeweekstocomplete.

  B.Otherscoverhundredsofmiles.

  C.Thecyclistorteamwiththefastertimewins.

  D.Theworld’sbestriderscompeteinit.

  E.Inamotor-pacedraceeachcyclistridesbehindamotorcycleormotorbike.

  F.Othersusebicyclesfortransportationbecausebicyclesdonotpollutetheair.

  G.Sportcyclingbeganin1868witharacenearParisFrance.

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2020-12-28 03:54
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  FGBCE

2020-12-28 03:57:27

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