题目内容

4.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 just 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 (喷) 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,10years 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 (笛子),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?
9.According to the article,in the future,the 3D printing technology willB.
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
10.What happened in the 3D printing industry last year?D
A.The 3D printing 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.
11.How is the last paragraph developed?A
A.By giving examples.
B.By making comparisons.
C.By analyzing the cause and effect.
D.By presenting research findings.
12.What is the best title of the passage?D
A.Great Demand for 3D Printers  
B.Technology in the Future 
C.Online Shopping Disappearing  
D.Printing out Everything.

分析 本文主要讲述的就是3D打印机在未来的广泛使用,能够改变很多做事的方式方法.

解答 9.B 细节理解题.根据文章1,2段Just as a traditional printer sprays (喷) ink onto paper line by line,modern 3-D printersspread material onto a surface layer by layer,from the bottom to the top,gradually building up a shape.说明未来的3-D打印机会改变我们生产很多产品的方式,故B正确.
10.D 细节理解题.根据文章第五段Last year,though,saw a big change in the 3-D printing industry---printers became muchcheaper.For example,10 years ago a desktop 3-D printer might have cost£20,000 (200,000 yuan),while now they cost only about£1,000,according tothe BBC.说明去年3D打印机变得很便宜了,故D正确.
11.A 篇章结构题.根据最后一段such as piracy和an expert in 3-D printing told Forbes News.说明在本段中使用了举例说明的方法来组织这个段落.故A正确.
12.D 主旨大意题.本文主要讲述的就是3D打印机在未来的广泛使用,能够改变很多做事的方式方法.故D正确.

点评 本文是一个科教类阅读理解,题目涉及多道细节理解题,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.

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相关题目
14.Clearly if we are to participate in the society in which we live,we must communicate with o ther people.A great deal of communicating is performed on a person-to-person basis by the simple means of speech.If we travel in buses,buy things in shops,or eat in restaurants,we are likely to have conversations where we give information or opinions,receive news or comment,and very likely to have our views challenged by other members of society.
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