自定主题，用英文讲一篇5分钟的演讲，要求包含一两条比较好的谚语，请问说什么主题好？求大神们给点思路

自定主题，用英文讲一篇5分钟的演讲，要求包含一两条比较好的谚语，请问说什么主题好？求大神们给点思路，谢谢！

建议选择环境保护—environmental protection
谚语有：1.Don't let our tears become the last drop of water on the earth.
不要让我们的眼泪成为最后一滴水地球上的水
2.A bit more green, more than a chance. A little green, less a glimmer of hope.
多一抹绿色,多一线生机.少一份绿色,少一丝希望.
3.Environmental pollution is equal to the murder of his mother.
环境污染是等于谋杀自己的母亲
4.Care for the environment! Because we have only one earth, this is our common home!
爱护环境吧！因为我们只有一个地球，这是我们共同的家园！
谢谢亲给我这次机会哦，要选我哦！

英语演讲ppt（百度文库免费，下面的网页上除了这个PPT，右边还有很多免费的英语演讲ppt，自己去找一个喜欢的下载）： 再看看别人怎么说的。

让姐姐来拯救你，哈哈哈 我是即兴演讲的哦 主题： A coin What could a coin mean? You must be werid. Let me tell you now. The obvious feature of a coin is that it has two sides. That's like everything has both sides, bad, or good. When you toss a coin, the side shown is not what you want, is that bad for you ? But how do you know it won't be good for you afterwards? There is a famous saying, Misfortune might be a blessing in disguises. Everything changes every second. When you are facinig all kinds of matters in your lives, what would you do if the bad side showed? 可能还是有点主题了，但是希望能对你有所启发吧，嘿嘿，给我个采纳吧，谢啦

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