英语作文:感冒应该怎么办
题目
英语作文:感冒应该怎么办
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WHAT SHOULD WE DO WHEN WE HAVE A COLDIf you have a cold,maybe you should drink a lot of water,it is good for your illness.Of course,you can lie down and rest,too.If you do not feel well,you must go to...
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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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