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1. The company's profits have increased ____ over the past five years, attracting more investors.
2. After the sudden power outage, the office was thrown into complete ____ as everyone struggled to continue working.
3. The small coastal village was hit by a terrible storm because it is built on ____ land that easily floods.
4. Which phrase expresses gratitude?
5. The ____ power plant uses water flow to generate electricity, providing clean energy for the region.
6. What does "CO₂" stand for?
7. The government decided to ____ a new policy that would increase taxes on luxury goods.
8. The study of weather patterns and conditions in the Earth's ____ helps scientists understand climate change.
9. If she ____ her application earlier, she ____ the scholarship by now.
10. The team won three championships ____ last season, which surprised everyone in the league.
二、词形变换填空题（11-20）
11. 11. Since five managers are going to give their reports, the meeting (last)____for at least two hours.
12. 12. I don’t think it necessary (discuss) ____the matter with him before the problem is settled.
13. 13. To combat climate change effectively, renewable energy infrastructure must be designed to be highly (power) ____, ensuring stable electricity supply even in extreme weather conditions.
14. 14. Karl probably (see) ____Star Wars several times, for he knows every detail of the film.
15. 15. I remember (see) ____you somewhere before, but I can’t tell the exact place.
16. 16. The rapid (melt) ____of the ice caps due to climate change has alarmed scientists worldwide.
17. 17. Although he was (deep) ____hurt by what she said to him, he made no reply.
18. 18. A telephone user may pay a fixed monthly charge and (allow) ____to make an unlimited number of local calls in the month.
19. 19. Obviously, nuclear power can never be the only (solve) ____to energy crisis.
20. 20. It is urgent that governments (protect) ____endangered species by enforcing stricter wildlife conservation laws.
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