电脑桌面
添加小米粒文库到电脑桌面
安装后可以在桌面快捷访问

高三英语二轮突破 阅读理解特训11(含解析)

高三英语二轮突破 阅读理解特训11(含解析)_第1页
1/7
高三英语二轮突破 阅读理解特训11(含解析)_第2页
2/7
高三英语二轮突破 阅读理解特训11(含解析)_第3页
3/7
《阅读理解特训:3 真 2 模含解析》2014 届高三英语二轮突破 11C6[2013·重庆卷] CAlmost every machine with moving parts has wheels, yet no one knows exactly when the first wheel was invented or what it was used for.We do know,however,that they existed over 5,500 years ago in ancient Asia.The oldest known transport wheel was discovered in 2002 in Slovenia.It is over 5,100 years old.Evidence suggests that wheels for transport didn't become popular for a while, though.This could be because animals did a perfectly good job of carrying farming tools and humans around.But it could also be because of a difficult situation.While wheels need to roll on smooth surfaces, roads with smooth surfaces weren't going to be constructed until there was plenty of demand for them.Eventually , road surfaces did become smoother, but this difficult situation appeared again a few centuries later.There had been no important changes in wheel and vehicle design before the arrival of modern road design.In the mid-1700s,a Frenchman came up with a new design of road—a base layer (层)of large stones covered with a thin layer of smaller stones.A Scotsman improved on this design in the 1820s and a strong,lasting road surface became a reality.At around the same time,metal hubs(the central part of a wheel) came into being,followed by the pneumatic tyre(充气轮胎) in 1846. Alloy wheels were invented in 1967, sixty years after the appearance of tarmacked roads(柏油路).As wheel design took off, vehicles got faster and faster.64.What might explain why transport wheels didn't become popular for some time?A.Few knew how to use transport wheels.B.Humans carried farming tools just as well.C.Animals were a good means of transport.D.The ex...

1、当您付费下载文档后,您只拥有了使用权限,并不意味着购买了版权,文档只能用于自身使用,不得用于其他商业用途(如 [转卖]进行直接盈利或[编辑后售卖]进行间接盈利)。
2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。
3、如文档内容存在违规,或者侵犯商业秘密、侵犯著作权等,请点击“违规举报”。

碎片内容

高三英语二轮突破 阅读理解特训11(含解析)

您可能关注的文档

确认删除?
VIP
微信客服
  • 扫码咨询
会员Q群
  • 会员专属群点击这里加入QQ群
客服邮箱
回到顶部