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.