ответьте на вопросы 1. What do you know about 3D printing? 2. Have you ever seen a 3D printer or 3D printed object before? 3. What do you think is possible impossible to 3D print? 4. How do you think 3D printing can impact people's lives? 5. Do you think that people will ever use 3D printers in their homes? Why / why not? 6. How would you use a 3D printer if you had one? 7. Why is the threat of 3D printing to intellectual property such a problem?