7. Read and name some important inventions and discoveries of the 20th and 21st century.
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Some important inventions and discoveries of the 20th and 21st centuries are:

1. The airplane (1903) – The Wright brothers invented the first successful airplane, which changed transport and made it possible for people to travel around the world quickly.

2. The television (1920s) – Television became one of the most important inventions for communication, entertainment, and education.

3. The computer (20th century) – Computers changed the way people work, study, communicate, and store information.

4. The Internet (late 20th century) – The Internet connected people all over the world and made it possible to share information instantly.

5. The mobile phone (1970s–1980s) – Mobile phones changed communication by allowing people to talk from almost anywhere.

6. The World Wide Web (1990) – It made the Internet easier to use and helped create modern online services.

7. The discovery of DNA structure (1953) – Scientists discovered the structure of DNA, which helped develop modern genetics and medicine.

8. Robotics and artificial intelligence (20th–21st centuries) – Robots and AI technologies are now used in science, industry, medicine, and everyday life.

9. Smartphones (21st century) – Smartphones combined phones, cameras, computers, and the Internet in one small device.

10. 3D printing (21st century) – 3D printers allow people to create objects from digital designs and are used in medicine, engineering, and manufacturing.

These inventions and discoveries have greatly changed human life and continue to influence the development of society.

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