咨询电话：400-699-7... 展开

六级网课 词汇 听力 攻略 阅读 零基础

新东方在线 > 六级 > 英语六级听力 > 正文

2018年12月英语六级听力常考时文：The Origin of Refrigerators

2018-11-21 17:43:53来源：网络

　　新东方在线英语六级频道为备考英语六级的同学们整理了英语六级听力常考时文，希望可以为大家带来帮助，预祝大家高分通过大学英语六级考试。

　　2018年12月大学英语六级听力常考时文盘点

　　英语六级听力常考时文：The Origin of Refrigerators

　　1.When did ice come into household use? ...

　　2.What performed the cooling in fact? ... of the ice.

　　3.When was the balance of insulation and circulation needed for an efficient icebox achieved? Near ...

　　By the mid-nineteenth century，the term “icebox” had entered the American language， but ice was still only beginning to affect the diet of ordinary citizens in the United States. The ice trade grew with the growth of cities. Ice was used in hotels，taverns， and hospitals， and by some forward-looking city dealers in fresh meat，fresh fish，and butter. After the Civil War，it came into household use. This had become possible because a new household convenience，the icebox，a precursor of the modern refrigerator，had been invented. Making an efficient icebox was not as easy as we might now suppose. In the early nineteenth century，the knowledge of the physics of heat，which was essential to a science of refrigeration， was rudimentary. The commonsense notion the best icebox was one that prevented the ice from melting was of course mistaken，for it was the melting of the ice that performed the cooling. Nevertheless，early efforts to economize ice included wrapping up the ice in blankets，which kept the ice from doing its job. Not until near the end of the nineteenth century did inventors achieve the delicate balance of insulation and circulation needed for an efficient icebox. But as early as 1803，Thomas Moore had been on the right track. He owned a farm about twenty miles outside the city of Washington，for which the village of Georgetown was the market center. When he used an icebox of his own design to transport his butter to market，he found his butter，still fresh and hard in neat，one-pound bricks，was more welcomed.

　　2018年12月大学英语六级听力常考时文盘点

英语六级考前冲刺资料下载

2018年6月英语六级真题答案音频(3套完整版)PDF下载

英语六级必备工具：测测你的词汇量能过六级吗

测测你的词汇量能过六级吗

英语六级大纲词汇必备资料下载

2018年12月英语六级词汇完整版带音标下载

大学英语六级寒假全程班

大学英语六级寒假全程班

本文关键字: 英语六级听力 六级听力常考时文

-->

扫码即刻查分 四六级最新答案

四六级好课 海量资料定期更新

更多资料

关注四六级小助手服务号回复【典藏笔记】获取

关注四六级小助手服务号，
获取学习资料

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.点击【关注公众号】，回复上方关键字领取学习资料。
更多>>
更多内容
更多>>
更多公开课>>
更多>>
更多资料
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

京ICP证050421号 京ICP备05067669号-2 京公网安备11010802017616号 网络视听许可证0110531号 京网文(2016)1303-163号

Copyright © 2011-2018 新东方教育科技集团有限公司, All Rights Reserved

违法和不良信息举报电话: 010-81401500 举报邮箱: sec@xdfzx.com 网上有害信息举报专区