Ex 3: Complete the passage with the words from the box
                                       FUTURE COMMUNICATION
      One way we might see communication (1) ……change( thay đổi)…………. in the future is through augmented reality (AR). In an augmented-reality system, you view the world through a technological overlay. This could take the form of a hand-held device like a (2) ……smartphone ( đt thông minh )…………. - there are several augmented-reality applications already available for some phones. Another possible application is through a set of augmented-reality glasses. In either case, you can view the world around you and see real-time (3) ………directly ( trực tiếp )………. information about what you’re viewing.
      Then there’s video (4) ……conferencing ( hội nghị trực tuyến )…………. . While the technology has existed for years, video calls aren’t popular. It might be because the hardware hasn’t been compelling or cost-effective (5) ………enough………. . But now webcams are starting to appear on televisions and are standard on many laptops. Are we about to enter an era of video conferencing?
       In the distant future, we may be able to communicate by sending our thoughts through a network (6) ………digital ( mạng lưới kĩ thuật số )………… into someone else’s brain. We’re decades away from such
technology, but scientists are working on creating brain-computer interfaces that allow  people to (7) ………transmit ( chuyển giao )………. thoughts directly to a computer. Perhaps 50 years from now we’ll all use an electronic version of (8) ………telepathy ( thần giao cách cảm )………. .
- augmented reality (n): (công nghệ) thực tế ảo tăng cường
- overlay (n): lớp phủ

Ex 3: Complete the passage with the words from the box

1. change

2. smartphone

3. directly

4. conferencing

5. enough

6. digital

7. transmit

8. telepathy