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Ladies and gentlemen, I ant to say something about trees. As e kno no trees are very important to human beings. First of all, they benefit our health. They send out oxygen for us to breathe. We can't live ithout trees.Secondly, trees can beautify our environment. As trees are so important, e must do our best to protect them. We must enforce the tree protection la s. We must plant as many trees as possible.Only in this ay can e live happily in the beautil orld. 中学生 优秀作文网( )
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