Read and analyze what is being defined in Column A and match it to Column B.
1. a structured set of data held in a computer, especially one that is accessible in various ways
- 数据库
2. an opportunity to make your ideas or beliefs known publicly
- 平台
3. the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages
-收音机
4. a popular free social networking website that allows registered users to create profiles, upload photos and video, send messages and keep in touch
-Facebook
3 -
4 -
Do you think ICT has more positive or negative effects on society?