E-learning Practice Course (2022) 04

1. What are the inventions that imitate animals?
2. What are the inventions that imitate plants?
3. Why is the aeroplane considered one of the greatest inventions in our history?
4. What can help scientists to learn about life under the sea?
5. How can a glass window clean itself?
6. Find the words or phrases in the text that can describe an aeroplane, a submarine, and Velcro.