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【答案】Trees are our friends.
Trees are important to our life.Trees help us in many ways.We get fruit from trees.Trees can keep the air clean and make our city more beautiful. We get wood from trees.We use wood to make many things.We use wood to make desks.We use wood to make pencils and paper.Trees are useful in many ways,and they are very important to us.They are our friends.Let's plant more trees!
【解析】
这是一篇说明文。主要介绍一下树对我们生活的重要性和树木的用途,因此我们要多种树。
1.介绍一下树对我们生活的重要性。
1.介绍树木在我们生活中起的作用。
3.树是我们的朋友 。我们要多种树。