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- Traffic reaches its rush hour between 8:00 and 9:00 in the morning.
- 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 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- 共用题干 Save Energy At HomeOn the average,Americans waste as much energy as two-thirds of the worlds p...
- I am feeling a lot more healthy than I was.
- 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...
- 共用题干 The Difference between Man and ComputerWhat makes people different from computer programs?What...
- 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 第一篇How Animals Keep WarmMan has invented ways to keep warm,but how do animals defend themselve...