2013高考科普类阅读

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1、2013年高考英语试题分类汇编之科普类阅读理解【重庆卷】CAlmosteverymachinewithmovingpartshaswheels,yetnooneknowsexactlywhenthefirstwheelwasinventedorwhatitwasusedfor.Wedoknow,however,thattheyexistedover5,500yearsagoinancientAsia.Theoldestknowntransportwheelwasdiscoveredin2002inS

2、lovenia.Itisover5,100yearsold.Evidencesuggeststhatwheelsfortransportdidn'tbecomepopularforawhile,though.Thiscouldbebecauseanimalsdidaperfectlygoodjobofcarryingfarmingtoolsandhumansaround.Butitcouldalsobebecauseofadifficultsituation.Whilewheelsneedtorol

3、lonsmoothsurfaces,roadswithsmoothsurfacesweren'tgoingtobeconstructeduntiltherewasplentyofdemandforthem.Eventually,roadsurfacesdidbecomesmoother,butthisdifficultsituationappearedagainafewcenturieslater.Therehadbeennoimportantchangesinwheelandvehicledesi

4、gnbeforethearrivalofmodemroaddesign.Inthemid-1700s,aFrenchmancameupwithanewdesignofroad—abaselayer(层)oflargestonescoveredwithathinlayerofsmallerstones.AScotsmanimprovedonthisdesigninthe1820sandastrong,lastingroadsurfacebecameareality.Ataroundthesamelim

5、e,metalhubs(thecentralpartofawheel)cameintobeing,followedbythepneumatictyre(充气轮胎)in1846.Alloywheelswereinventedin1967,sixtyyearsaftertheappearanceoftarmackedroads(柏油路).Aswheeldesigntookoff,vehiclesgotfasterandfaster.64.Whatmightexplainwhytransportwheel

6、sdidn'tbecomepopularforsometime?A.Fewknewhowtousetransportwheels.B.Humanscarriedfarmingtoolsjustaswell.C.Animalswereagoodmeansoftransport.D.Theexistenceoftransportwheelswasnotknown.65.Whatdoweknowaboutroaddesignfromthepassage?A.Itwaseasierthanwheeldesi

7、gn.B.Itimprovedafterbigchangesinvehicledesign.C.Itwaspromotedbyfast-movingvehicles.D.Itprovidedconditionsforwheeldesigntodevelop.66.Howisthelastparagraphmainlydeveloped?A.Bygivingexamples.B.Bymakingcomparisons.C.Byfollowingtimeorder.D.Bymakingclassific

8、ations.67.Whatisthepassagemainlyabout?A.Thebeginningofroaddesign.B.Thedevelopmentoftransportwheels.C.Thehistoryofpublictransport.D.Hisinventionoffast-movingvehicles.【语篇解读】本文是一篇说明文，题材是车轮。全文讲述了车轮的发展历程以及道路设计对车轮发展的影响。地址：山西省太原市和平南路45号英语周报社网络