Câu 6 :
3. Read the text. For questions (1-4), choose the correct answer (A, B, C or D).
(Đọc văn bản. Cho các câu hỏi (1-4), chọn đáp án chính xác (A, B, C hoặc D).
1 3D printers became something many people could afford in ___________.
A 1984
B 1993
C 2004
D 2018
2 3D printers do NOT use__________to make objects.
A ink
B plastic
C wax
D metal
3 Medical implants help patients___________.
A get well more quickly
B avoid an operation
C find a good doctor
D with foot problems
4. The author’s purpose in the text is______________.
A to warn about the dangers of 3D printers
B to explainthe uses of 3D printers in medicine
C to describe the development of a piece of technology and its uses
D to list the benefits of a brand-new
WANT IT? PRINT IT!
The wheel on your little brother's favourite toy car has broken, and he's very upset. You're not worried, though. You just take some pictures, load them into your 3D printer and in short time, the new part is sitting in your hand.
3D printers are machines that print objects. Believe it or not, the first 3D printer was invented way back in 1984, and in 1993, the first 3D printing company was set up! Since 2004,3D printers have reached a price and size that allows almost anybody to own one, and in 2018, over half a million were sold.
3D printers work in a similar way to the old computer printer, which shot tiny jets of ink onto paper to make words. Instead of ink, however,3D printers shoot plastic, metal, wax or another material that hardens instantly. By adding thousands of layers,the 3D shape is slowly made.
People are using their 3D printers to make any object you can imagine, from jewellery to beautiful ornaments. Sports companies are using them to make boots and trainers that perfectly fit athletes' feet. But 3D printers can have a more serious use-one that might save your lifel Doctors are using them to create medical implants. for example bones and joints that exactly match the patients. This makes surgery easier and recovery faster.
3D printers are developing all the time, and are becoming the piece of technology every home should have. And soon, who knows-you might be able to print one yourself.