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- He asserted that nuclear power was a safe and non一polluting energy source.
- 共用题干 第三篇Almost Human?Scientists are racing to build the worlds first thinking robot.This is not sci...
- 共用题干 第三篇Human Space ExplorationWhile scientists are searching the cause of the Columbia disaster,NA...
- 共用题干 The Forbidden AppleNew York used to be the city that never sleeps. These days its the city tha...
- 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 More Than 8 Hours Sleep Too Much of a Good Thing1 Although the dangers of too little sleep are...
- 共用题干 Save Energy At HomeOn the average,Americans waste as much energy as two-thirds of the worlds p...
- She was close to success.
- 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 第一篇Sleepless at NightIt was a normal summer night. Humidity（湿气）hung in the thick air.I couldnt...