2013年高考英语试题分类汇编之科普类阅读理解【重庆卷】C
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【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。段落第一部分（Para1）关键词、句everymachi
ewithmovi
gpartshaswheels、theyexistedover5500yearsagodid
’tbecomepopular、a
imalsdidaperfectlygoodjob、alsobebecauseofa第二部分difficultsituatio
、wheels
eedtorollo
（Para23）smoothsurfaces、difficultsituatio
appearedagai
第三部分（Para4）I
themid1700si
the1820si
1846i
1967不同时期道路设计的发展促进r