Almost every machine with moving pa

根据考试中心的统计分析，以下试题在2019/10/22日高考习题练习中，答错率较高，为：88%
【单选题】Almosteverymachinewithmovingpartshaswheels,yetnooneknowsexactlywhenthefirstwheelwasinventedorwhatitwasusedfor.Wedoknow，however，thattheyexistedover5,500yearsagoinancientAsiA、Theoldestknowntr ansportwheelwasdiscoveredin2002inSloveniA、Itisover5，100yearsolD、Evidencesuggeststhatwheelsfortr ansportd idn’tbecomepopularfor.while,though.ThiscouldbebecauseanimalsdidaperfectlygoodjobofcarryingfarmingtoolsandhumansarounD、Butitcouldalsobebecauseofadifficultsituation.Whilewheelsneedtorollonsmoothsurfaces,roadswithsmoothsurfacesweren’tgoingtobeconstr ucteduntiltherewasplentyofdemandforthem.Eventually,roadsurfacesdidbecomesmoother,butthisdifficultsituationappearedagainafewcenturieslater.Therehadbeennoimportantchangesinwheelandvehicledesignbeforethearrivalofmodernroaddesign.Inthemid-1700s,aFrenchmancameupwithanewdesignofroad--abaselayer(层)oflargestonescoveredwithathinlayerofsmalleratones.A、Scotsmanimprovedonthisdesigninthe1820sandastr ong,lastingroadsurfacebecameareality.Ataroundthesametime,metalhubs(thecentr alpartofawheel)cameintobeing,followedbytheWheelswereinventedin1967,sixtyyearsaftertheappearanceoftarmackedroads(泊油路).Aswheeldesigntookoff,vehiclesgotfasterandfaster.WhatisthepassagemainlyaboutA、Thebeginningofroaddeaign.B．Thedevelopmentoftr ansportwheels.C．Thehistoryofpublictr ansport.D．Theinventionoffast-movingvehicles.
参考答案：B，答错率：88%