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最佳答案：There are many ways of traveling, People may travel by plane if they want to tra
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最佳答案：Henry was worried.This was his first time to go travelling by air.He did not kno
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最佳答案：Air PollutionThe United States produces more air pollutants than any other count
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最佳答案：Electricity is very important nowadays,it give light to every family and make ma
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最佳答案：AirAir is all around us.It's around us as we walk and play.From the time we were
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最佳答案：my roomThis is my room.There is an air-conditioner next the window,there is an e
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最佳答案：Mordern time,human has more and more convenient ways to "deliver" yourself from
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最佳答案：HI给你了,采纳先.