1. Qualified
2. Their
3. Will do
4. Hands
5. Presence
6. Not publishing
7. There is
8. Convenient
9. Depression
10. Bored
Our unsustainable development and exploitation of the environment will harm our planet to an irreversible extent. The only solution to prevent our Earth from being destroyed is to conserve the resources. Take fresh water for example, only 2% of the water on Earth is fresh, drinkable water. Global warming and desertification causes the valuable water to be lost. In a few decades we will not have enough fresh water to sustain our population. Citizens can conserve water in many ways, for example, turning off the tap when not using it; taking shorter showers and less baths.
图:
1. A
2. D
3. B
4. C
5. D
6. A
7. B
8. C
9. D
10. A
11. B
12. A
13. C
14. D
15. B
16. A
17. D
18. A
19. C
20. C
绝对安
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