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 （无穷尽的）．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 （按）﹣print，the 3﹣D printer spreads the materials layer （层） by layer and like magic the object is produced．
The first 3﹣D printer was invented in 1986by 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 2011a group of four men in the US used 3﹣D printing to Produce ATM skimmers （提款机盗刷器）．These were placed on an ATM and stole over ＄400，000from 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!
根据短文内容，选择最佳选项，将其标号在答题卡上涂黑．
62． invented the first 3﹣D printer．
A．Charles Hull
B．Four men in the US
C．Dirk Vander Kooj
D．A doctor called Cornell
63．What is the correct order for people to use a 3﹣D printer？
a．choose a proper 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﹣c﹣b﹣a
C．a﹣c﹣d﹣b
D．d﹣a﹣b﹣c
64．According to the passage，people have NOT yet produced with a 3﹣D printer．
A．a gun
B．some furniture
C．a man﹣made ear
D．ATM skimmers
65．What does the writer think of the 3﹣D printer？
A．It is useless in our daily life．
B．It is helpful but dangerous．
C．It is necessary only for our work．
D．It is too expensive for most people．
粤公网安备 44130202000953号