See a cellphone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes ju
st by hitting “print” on your computer. You might find it hard to believe that you could actually “print” an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays ink onto paper line by line, modern 3D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.
Instead of ink, the materials the 3D printer uses are mainly plastic, resin(树脂) and certain metals. The thinner each layer is—from a millimetre to less than the width of a hair—the smoother and finer the object will be. This may sound like a completely new technology, but the truth is that 3D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3D printing industry—printers became much cheaper. For example, 10 years ago a desktop 3D printer might have cost ￡20，000, while now they cost only about ￡1，000, according to the BBC. Taken out of the factory and introduced to more diverse and common uses, 3D printing can create just about anything you can think of—flutes , bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, 
as 3D printing becomes more common, it may bring about certain problems—such as piracy. “Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3D printer, who will visit a retail store again？” an expert in 3D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3D printer to print out a fully functioning gun?
32. According to the article, in the future, the 3D printing technology will _______.
A. enable people to make better purchases online
B. change the way we make many products
C. be applied as widely in our daily life as computers
D. shorten the time it takes for people to get what they buy online
33. What happened in the 3D printing industry last year?
A. The 3D pri
nting technology was taken out of the factory.
B. The 3D printing technology began to be used in various fields.
C. The 3D printer was used for medical treatment for the first time.
D. The 3D printer became more affordable for consumers(消费者).
34. What is the best title of the passage?
A. Great Demand for 3D Printers B. Technology in the Future
C. Online Shopping Disappearing D. Printing out Everything
35. How is the last paragraph developed?
A. By giving examples. B. By making comparisons.
C. By analyzing the cause and effect. D. By using figures.
【收录时间】
2017-03-23
【知识点】
政治经济文化类阅读
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单日会员可无限次解锁答案，低至9.9》
2017-03-23
阅读理解
中等
毛宇轩
考点梳理：
根据可圈可点权威老师分析，试题 "
See a cellphone cover that you like on Taobao? Forget about placing an order, paying the bill onlin
" 主要考察你对
政治经济类阅读
等考点的理解。关于这些考点的"梳理资料"如下:
◎ 政治经济类阅读的定义
政治经济类文章的概念：
要做好这类阅读，平时就要注意了解国内外发生的政治经济大事，掌握一定背景知识，对这类文章的叙述特点及内容安排有一定了解，还要扩展这方面的词汇。阅读这类文章，要抓住文章的核心，即文章整体和各段主要在说什么，也要注意段落之间的逻辑关系。
◎ 政治经济类阅读的知识扩展
要做好这类阅读，平时就要注意了解国内外发生的政治经济大事，掌握一定背景知识， 对这类
文章的叙述特点及内容安排有一定了解，还要扩展这方面的词汇。阅读这类文章，要抓 住文章
的核心，即文章整体和各段主要在说什么，也要注意段落之间的逻辑关系。
文章的叙述特点及内容安排有一定了解，还要扩展这方面的词汇。阅读这类文章，要抓 住文章
的核心，即文章整体和各段主要在说什么，也要注意段落之间的逻辑关系。
◎ 政治经济类阅读的知识点拨
如何备考政治经济类阅读理解题：
【题型说明】政治经济类阅读文章是高考常选材料之一。该类文章时代气息浓郁，语言鲜活，但熟字新义词、超纲词及专业词语多，长句、难句多。政治类文章大多数是同学们感性趣的内容，读起来倒有似曾相识的感觉，经济类文章读起来就像是雾里看花，文章看完，一头雾水。再加之这类文章的命题侧重于词义猜测、推理判断和文章主旨，同学们对这类题材是望而生畏。
【备考策略】建立心理优势。针对不同体裁的文章，我们要采取相应的阅读方法和技巧。政治类文章多采用记叙文形式，我们可采取“顺读法”，以便抓关键语句，领会文章主旨；而经济类文章则多采用说明文形式，我们则可以采取“逆读法”，先读试题，再从文章中查找有用信息。若遇到的确难读的材料。千万不用着急，因为你觉得难，其他人也一定是同感。在高考前，我们就要有这种心理准备，高考试卷肯定有一、两篇难以阅读的材料。不过，我们平时可以有意识地从报刊杂志上找一些较难的阅读材料来阅读，以培养自己迎难而上的心理素质。
【答题方法】
1、寻找主干：
根据英语中五种基本句型结构，把句子中的主语、谓语、宾语、表语等主要成分找出来，其他成分如定语、状语、补语等则易于理解。找到了句子主干，句子的意思至少明白了一半。
2、剔除从句：
在一个长句中可能会出现若干个从句，在理解时，如果把各个从句剔除出来单独理解，然后把大意拼凑起来，整个长句的意思就会明白六、七分。
3、辨别分句：
一个长句如果是由几个并列、转折、递进、对比关系的分句组成，句中往往有表示这些分句关系的连接词，只要能弄清楚分句和分句之间的逻辑关系，再把各层分句的意思加以连贯，整个长句的句意基本上能跃然脑中。
4、寻找关键词：
如果一个句子看完，一点句意的感觉也没有，下下策就是抓住句中的关键词，通过关键词大体弄懂这个长句的意思。
◎ 政治经济类阅读的教学目标
1、熟悉并积累关于政治经济类阅读的常用词汇及话题。
2、了解政治经济类话题文章常见的写作手法及文章结构。
2、了解政治经济类话题文章常见的写作手法及文章结构。
◎ 政治经济类阅读的考试要求
能力要求：掌握/应用
课时要求：2
考试频率：常考
分值比重：5
课时要求：2
考试频率：常考
分值比重：5