what can we do about global warming?
题目
what can we do about global warming?
紧急,不用太长,读起来2分钟左右,
我求的是演讲稿~（本人高中水平！）还有就是，最好附带中文翻译，
答案
My suggested answer:Global warming is a growing problem in the world.Melting ice-caps in the Artics and Antartica,rising temperatures across the continents,increasing number of typhoons and tropical s...
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已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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