First, do you know?

1. Who invented the first airplane? (Wright brothers)

2. Who invented the car? (Mercedes-Benz)

3. Who invented papermaking? (Cai Lun)

4. Who invented the electric light? (Edison)

5. Which four countries are the four ancient civilizations? (Babylonia, ancient Egypt, ancient India, China)

Second, music can cultivate sentiment, and there are many strange functions: it can prevent pests from breeding, stimulate the feeling of exercise, and can also be used as an auxiliary medical means ...

Third, science and technology carry dreams, life lies in exercise, and spring returns to the earth, and the 11th Science and Technology Sports Festival outside the Soviet Union is coming as scheduled. This year's Science and Technology Sports Festival is rich and colorful. Let's enjoy the happiness of science and technology in all activities!