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SEE a cell phone 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 (噴) ink onto paper line by line, modern 3-D 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 3-D printer uses are mainly plastic, resin (樹脂)and certain metals. The thinner each layer is --- from a millimeter 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 3-D 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 3-D printing industry--- printers became much cheaper. 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 to the BBC.
Taken out of the factory and in­troduced to more diverse and com­mon uses, 3-D 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 3-D printer, accord­ing to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3-D printing becomes more commonplace, 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 3-D printer, who will visit a retail (零售的) store again?" an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun?
小題1:According to the article, in the future, the 3-D printing technology will ___.
A．enable people to make better purchases online
B．be applied as widely in our daily lives as computers
C．change the way we make many products
D．shorten the time it takes for people to get what they buy online
小題2:What was the big event happening in the 3-D printing industry last year?
A．The 3-D printing technology was taken out ofthe factory.
B．The 3-D printer became more affordable forconsumers.
C．The 3-D printer was used for medical treatmentfor the first time.
D．3-D printing technology began to be used invarious fields.
小題3:How is the last paragraph developed?
A．By analyzing a cause and an effect.B．By making comparisons.
C．By giving examples.D．By presenting research findings.
小題4:What is the best title of the passage?
A．Printing out everythingB．Technology in the future
C．Online shopping disappearingD．Great demand for 3-D printers

小題1:C
小題2:B
小題3:C
小題4:A

試題分析：本文主要講述的就是3D打印機在未來的廣泛使用，能夠改變很多做事的方式方法。
小題1:C 細節題。根據文章1,2段Just as a traditional printer sprays (噴) ink onto paper line by line, modern 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.說明未來的3-D打印機會改變我們生產很多產品的方式，故C正確。
小題2:B 細節題。根據文章第五段Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. 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 to the BBC.說明去年3D打印機變得很便宜了，故B正確。
小題3:C 總結題。根據最后一段such as piracy和an expert in 3-D printing told Forbes News.說明在本段中使用了舉例說明的方法來組織這個段落。故C正確。
小題4:A 主旨大意題。本文主要講述的就是3D打印機在未來的廣泛使用，能夠改變很多做事的方式方法。故A正確。
點評：本文主要講述的就是3D打印機在未來的廣泛使用，能夠改變很多做事的方式方法。此類文章的最大的障礙是詞匯以及考生對閱讀內容的不熟悉，需要考生在閱讀的時候有足夠的耐心。要養成在上下文串聯中猜測詞義的能力，根據上下文中出現的同義詞，近義詞，反義詞，以及詞義的解釋來理解生詞。同時要抓住文章的中心，不要受其他信息的影響。要根據題目及選項以及文章的上下文串聯合理的判斷推理。
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_19 , I also learned a lot, and my experience with my Chinese students has made me a  20  American teacher, knowing how to teach in a different culture.
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A．the UK B．the US C．China D．Australia
小題2:
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小題19:
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