Question

Have you ever had dreams about building a robot? Or putting together a spaceship? Or even seeing your face made out of chocolate? Done. All you need is a 3-D printer!

The possibilities of 3-D printing seem endless. All the user has to do is to design an object on the computer and choose a material to print in. The printers print in hundreds of different materials including glass, sugar and even skin! When the user presses “print”, the 3-D printer spreads the material layer by layer and like magic the object is produced.

The first 3-D printer was invented in 1986 by an American, Charles Hull. But 3-D printing has only become cheap enough recently for most people to use. Designers now use 3-D printing to create unusual things. The Dutch artist Dirk Vander Kooj prints furniture made from old fridges. And doctors have used 3-D printing to print human body parts! The Telegraph reported in February that scientists from Cornell Medical College even printed a man-made ear.

But like a lot of new technologies, if 3-D printing gets into the wrong hands, it can be dangerous. In 2011 a group of four men in the US used 3-D printing to produce ATM skimmers. These were placed on an ATM and stole over $400,000 from users of the ATM. It is terrible to think that criminals* like them might one day use a 3-D printer to print a gun.

But for better or for worse, 3-D printing has been put into use. In a few years, you’ll probably be wondering how you could ever live without your 3-D printer!

1.             invented the first 3-D printer.

A. Charles Hull    B. Dirk Vander Kooj    C. A doctor called Cornell    D. Four men in the US

2.What is the correct order for people to use a 3-D printer?

a.Choose a material.                        b.Press the print button.

c.The 3-D printer spreads the material.        d.Use a computer to design an object.

A. abcd    B. dabc    C. acdb    D. dcba

3.The underlined word “ gets into the wrong hands ” in the fourth paragraph might mean           in English.

A. the hands caught by the printer    B. to get into trouble

C. the hands used in a wrong place    D. to do something illegally

4.What does the writer think of the 3-D printer?

A. It is necessary only for our work.    B. It is too expensive for most people.

C. It is helpful but dangerous.    D. It is useless in our daily life.

Answer

1.A

2.B

3.D

4.C

【解析】这篇短文主要介绍了3D打印技术的发明不仅对于人们是有帮助的而且如果被坏人利用也有可能是危险的。

1.根据The first 3-D printer was invented in 1986 by an American, Charles Hull.故选A。

2.根据第二段All the user has to do is to design(设计) an object on the computer andchoose a material(材料) to print in. The printers print in hundreds of different materials including glass, sugar and even skin! When the user presses “print”, the 3-D printer spreads the materiallayer(层) by layer and like magic the object is produced.可知第一设计一个物体，二是选择材料，三是按下打印按钮，四打印机传输材料。故选B。

3.根据下文it can be dangerous.可知上文中gets into the wrong hands的意思是“做一些错误的事情”故选D。

4.根据But like a lot of new technologies, if 3-D printing gets into the wrong hands, it can be dangerous.可知作者认为3D技术也是危险的，故选C。