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- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- 共用题干 The Forbidden AppleNew York used to be the city that never sleeps. These days its the city tha...
- The weather was crisp and clear and you could see the mountains fifty miles away.
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- 共用题干 Water一the Issue of This CenturyThe world is running short of freshwater. Populations are growi...
- 共用题干 Sharks Perform a Service for Earths WatersIt is hard to get people to think of sharks as anyth...
- 共用题干 Ford1 Fords great strength was the manufacturing process一not invention.Long before he started ...
- 共用题干 Black HolesMost scientists agree that black holes exist but are nearly impossible to locate.A ...
- 共用题干 Free Statins with Fast Food could Neutralize Heart RiskFast food outlets could provide statin ...
- 共用题干 Learn about Light1 .Ancient civilizations were amazed by the existence of light for thousands ...