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 (零售的) 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?

　　文章大意：本文介绍了3D打印机的使用材料和工作原理等，它在未来的广泛使用能够改变人们的生活，同时也会产生盗版行为等问题。

　　1．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

　　答案：B　细节理解题。根据文章第二段中“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.”可知，未来的3D打印机会改变我们生产很多产品的方式。

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