专四专八好课
经典
专四备考规划
0元
专四水平测试
5分钟
英语专四全程班
特惠
专八备考规划
0元
专八水平测试
5分钟
英语专八全程班
特惠
零基础英语速升
考研好课特惠
介绍
资料下载
精选1000+
英语专四阅读练习题（38）
英语专四考生复习时每天可以做几篇英语专四阅读练习题，在做阅读的同时对专四词汇和专四语法都会有所帮助。
Plastics are materials which are softened by heat and set into lasting form when shaped in a mold. Some are natural; some are semi-synthetic(半合成的) , the result of chemical action on natural substance; some are synthetic, built up from the constituents of oil or coal. All are based on the chemistry of carbon, with its capacity for forming chains. The molecules that compose them (monomers) link together in the setting or curing(硫化) process to form chains (polymers) , which give plastics their flexible strength. Some plastics retain their ability to be softened and reshaped; like wax, they are thermoplastic. Others set permanently in the shapes they are given by heat and pressure; like eggs, they are thermosetting.
From industrial beginnings in the nineteenth century, plastics have struggled through a hundred and twenty years of glory, failure, disrepute and suspicion on the slow road to public acceptance. Now, at last, one can positively say that plastics are appreciated and enjoyed for what they are; that they make modern life richer, more comfortable and convenient, and also more fun. Plastics are warm materials, sympathetic to the human touch, and their transformation into things that come into contact with human beings is entirely appropriate.
The fact that there are plastic antiques comes as a shock to most people. How can a material that seems so essentially twentieth century, and one that is so much associated with cheap, disposable products, has a history at all? It is a young technology, and a great part of the fun of collecting plastics is that beautiful pieces of historical interest can still be found very cheaply.
1. The word "sympathetic" in Paragraph 2 most probably means_______.
A. harmful B. agreeable
C. pitiful D. sorry
2. It can be concluded from this passage that_______.
A. plastics are synthetic materials
B. plastics won public acceptance 120 years ago
C. plastics are very harmful in modern life
D. plastics are cheap as antiques
3. Which of the following is essential to create any type of plastics? A. Carbon. B. Eggs.
C. Oil. D. Coal.
4. Plastics that harden into permanent shapes are called_______.
A. chained B. thermoplastic
C. synthetic D. thermosetting
5. Which of the following is the best title for the passage?
A. The Importance of Plastics in the Nineteenth Century.
B. Why People Are Suspicious of Plastics.
C. The Development of Plastics as a Modern Material.
D. How Plastics Are Manufactured.
1. B 2. D 3. A 4. D 5. C
专四专八精选好课 暖心助学
新东方好老师 手把手带学
资料下载
专八听力训练：时政短语热点【word版】
发布时间：2020-04-01关注新东方在线服务号
回复【专八听力】获取
专八翻译模拟练习题总结
发布时间：2020-04-01关注新东方在线服务号
回复【专八翻译】获取
专四专八写作必备高级词汇
发布时间：2020-04-01关注新东方在线服务号
回复【专八作文】获取
专四听力听写练习50篇文本文档
发布时间：2020-04-01关注新东方在线服务号
回复【专四听力】获取
2021专四写作高级范文15篇集锦
发布时间：2020-04-01关注新东方在线服务号
回复【专四写作】获取
专八基础词汇积累完整版（169页全）
发布时间：2019-12-26关注新东方在线服务号
回复【专八词汇】获取
英语专业四级词汇PDF电子版
发布时间：2019-12-26关注新东方在线服务号
回复【专四词汇】获取
近十年专八真题答案及听力原文
发布时间：2019-12-26关注新东方在线服务号
回复【专八真题】获取
近十年专四真题答案及听力原文
发布时间：2019-12-26关注新东方在线服务号
回复【专四真题】获取
关注新东方在线服务号
关注新东方在线服务号，
免费获取专四专八必看干货资料
推荐阅读
新东方在线专四专八频道给大家整理的相关内容，希望能够对大家的专四专八考试备考有所帮助，更多有关专四专八的备考内容，欢迎随时关注
新东方在线专四专八频道给大家整理的相关内容，希望能够对大家的专四专八考试备考有所帮助，更多有关专四专八的备考内容，欢迎随时关注
新东方在线专四专八频道给大家整理的相关内容，希望能够对大家的专四专八考试备考有所帮助，更多有关专四专八的备考内容，欢迎随时关注
新东方在线专四专八频道给大家整理的相关内容，希望能够对大家的专四专八考试备考有所帮助，更多有关专四专八的备考内容，欢迎随时关注
新东方在线专四专八频道给大家整理的相关内容，希望能够对大家的专四专八考试备考有所帮助，更多有关专四专八的备考内容，欢迎随时关注
精彩课程推荐
直录播结合，知识点精讲，好老师带学，带你稳稳走好备考路
火热报名
直录播精讲互动二合一，新东方好老师全程带学不迷茫！
火热报名
资料下载
关注新东方在线服务号
回复【专八听力】获取
关注新东方在线服务号
回复【专八翻译】获取
关注新东方在线服务号
回复【专八作文】获取
关注新东方在线服务号
回复【专四听力】获取
关注新东方在线服务号
回复【专四写作】获取
关注新东方在线服务号
回复【专八词汇】获取
关注新东方在线服务号
回复【专四词汇】获取
关注新东方在线服务号
回复【专八真题】获取
关注新东方在线服务号
回复【专四真题】获取
阅读排行榜
相关内容
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- 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
网友热搜