health and eating habit英语作文,急啊(不少于80字)
题目
health and eating habit英语作文,急啊(不少于80字)
答案
Many people does not care about their eating habit and think that they can eat whatever they want provided they do some workouts.This is not right.In order to be in good health it is important that yo...
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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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