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最佳答案：We are not a Doraemon,can't take out something from his pocket,so we should econ
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最佳答案：For two T-shirt,I would like to choose the cheap one for buy a book.
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最佳答案：Nowadays, waste in our life is very serious. In order to improve students' reali
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最佳答案：Aiming at the conservation of water resources. Water is the key topic, reasonabl
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最佳答案：for reducing greenhouse gas of atmosphere,on the one hand,we need to cut down el