techniques , but he admitted there would be difficulties in meeting his goal .“ For exampl

techniques , but he admitted there would be difficulties in meeting his goal .
“ For example , if you run out of ink while printing on paper , you will throw that paper away . But you cannot throw half-completed buildings away if your material gets stuck , ” he said . Although the printed house is not available to visit , there is a chance for people in Shanghai to see items printed in 3D.
The Belgium-based company Materialise NV held a 3D printing exhibition in Shanghai that started in late 2012 and ended in the middle of 2013 . The company is eager to show Asia what is possible with 3D printing .
“ All the pieces shown here are what cannot be made through traditional techniques . A good example of this customization is hearing aids . More than 10 million people already use 3D printed hearing aids, all made according to the size of their ears , ” said Wim Michiels , executive vice-president at Materialise NV .
“ You can produce anything whenever and wherever you like . You don’t need to set up production lines for pieces that only need a limited amount of products . Setting up a production line is a lot of work . It takes a long time and is very expensive for a limited number of pieces , ” said Michiels .
Kim Francois , managing director of Materialise China , said their European and American clients have already taken the next step toward additive manufacturing with small series production such as hearing aids .
【小题1】What is mainly talked about in the text ?
A. The development of 3D printing .
B. A 3D printing show in Shanghai .
C. Varieties of items printed in 3D .
D. The company Materialise NV .
【小题2】According to Behrokh Khoshnevis , what is the main difficulty in printing buildings ?A．Time .B．Technique .C．Space .D．Material .【小题3】The example of 3D printed hearing aids was mentioned to show that .A．these items used to be impossible to make B．3D printing has a large market share C．3D hearing aids help people hear better D．people need different sized hearing aids【小题4】According to the text , 3D printing is suitable for .A．mass production B．making small items C．small series production D．reducing production costsB

(答案→)B 解析：这篇文章是关于在上海的3D打印展，专家展示了3D打印技术打印出来的物品，从助听器到建筑都可以打印，这些是以前所做不到的，而且3D打印技术不需要生产线。【小题1】主旨题：从文章第四段的内容：The Belgium-based company Materialise NV held a 3D printing exhibition in Shanghai that started in late 2012 and ended in the middle of 2013 .可知这篇文章是关于在上海的3D打印展，选B【小题2】细节题：从文章第三段的句子：“ For example , if you run out of ink while printing on paper , you will throw that paper away . But you cannot throw half-completed buildings away if your material gets stuck , ”可知根据Behrokh Khoshnevis 所说画建筑的最大的困难是材料，选 D【小题3】细节题：从文章第五段的句子：“ All the pieces shown here are what cannot be made through traditional techniques . A good example of this customization is hearing aids .可知3D打印的助听器的例子是为了表明这些东西过去是不可能做到的，选A【小题4】细节题：从文章最后一段的句子：their European and American clients have already taken the next step toward additive manufacturing with small series production such as hearing aids .可知3D打印适用于小型产品。选C

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