10. The earth’s a_________ is a thin layer of gases that surrounds the Earth.

M5 Unit3

9. It took a great deal of __________ (处理，管理)to stop the argument from becoming a quarrel.

8. His works were not a_________ until after his death.

7. T________ , many people can ________ (认识)their mistakes.

6. The i__________ hunting of animals ________(威胁)the wild animal production.

5. Some greedy businessmen often hide from their ___________(责任)to the environment and think only about money.

4. Everyone should learn about the e__________ friendly way of living.

3. Doing exercise every day will be b__________ to your health.

2. Factories produce large amounts of p_________ chemicals.

1. Today large areas of the world are damaged by __________ (工业)waste.