新東方網>大學教育>四六級>四六級模擬試題>四級模擬>正文
2011年12月英語四六級考試閱讀提高練習(19)
2011-11-18 11:50
來源：考試大
作者：
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
（實習編輯：劉偉）
官方微信：四六級小助手 （微信號：koolearncet）
四六級免費好課、聽說讀寫譯方法、四六級最新資訊、海量過級資料！
掃描左側二維碼，關注免費領取！
名稱名稱
微信掃碼關注"新東方網"服務號
即可立刻獲取！
版權及免責聲明
① 凡本網註明"稿件來源：新東方"的所有文字、圖片和音視頻稿件，版權均屬新東方教育科技集團（含本網和新東方網） 所有，任何媒體、網站或個人未經本網協議授權不得轉載、連結、轉貼或以其他任何方式複製、發表。已經本網協議授權的媒體、網站，在下載使用時必須註明"稿件來源：新東方"，違者本網將依法追究法律責任。
② 本網未註明"稿件來源：新東方"的文/圖等稿件均為轉載稿，本網轉載僅基於傳遞更多信息之目的，並不意味著贊同轉載稿的觀點或證實其內容的真實性。如其他媒體、網站或個人從本網下載使用，必須保留本網註明的"稿件來源"，並自負版權等法律責任。如擅自篡改為"稿件來源：新東方"，本網將依法追究法律責任。
③ 如本網轉載稿涉及版權等問題，請作者見稿後在兩周內速來電與新東方網聯繫，電話：010-60908555。