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- 共用题干 AnimalsSixth SenseA tsunami（海啸）was triggered（引发）by an earthquake in the Indian Ocean in Decemb...
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- 共用题干 An Intelligent CarDriving needs sharp eyes, keen ears, quick brain, and coordination（协调）betwee...
- 共用题干 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...
- 共用题干 第三篇Human Space ExplorationWhile scientists are searching the cause of the Columbia disaster,NA...
- 共用题干 Learn about Light1 .Ancient civilizations were amazed by the existence of light for thousands ...
- 共用题干 A Doctor in the HouseBrushing your teeth twice a day should keep the dentist away. But if a gr...
- 共用题干 第二篇Good Table MannersManners play an important part in making a favorable impression at the di...
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...