第1个
开头：亲爱的老师，同学们; 大家好! 我今天演讲的题目是：《保护环境，从我做起》。 说起题目，我想了这么两件事情。
第2个
开头：关于绿色环保演讲稿3分钟 尊敬的各位老师，亲爱的同学们： 大家好!我叫xxx，今天我演讲的题目是《低碳环保 从我做起》。
第3个
开头：we live in the world every day. we eat food, drink water, wear clothes, watch tv, use computers and so on. we are producing waste every moment. generally speaking, there are four sorts of waste. they are material waste, organic waste, inorganic waste and poisonous & harmful waste. now, we are going to talk about each sort of waste one by one.
第4个
开头：we live in the world every day. we eat food, drink water, wear clothes, watch tv, use computers and so on. we are producing waste every moment. generally speaking, there are four sorts of waste. they are material waste, organic waste, inorganic waste and poisonous & harmful waste. now, we are going to talk about each sort of waste one by one.
