单词拼写。
1. There is too much _____ (暴力) on TV.
2. With the d_____of economy, people's living standards are higher now.
3. Every night he observes the space through at _____.
4. The illness is s through the village.
5. One cannot e without air.
6. You will (逐渐地) get used to the weather here.
7. By the time they reached the top of the mountain, they were (精疲力尽).
8. There is a big underground railway (系统) in London, which is good for travelers.
9. Zhang Heng was one of the most famous Chinese a in the world.
10. The mammals (繁殖) when the animals, harmful to them, disappeared.