《MY FAVORITE ANIMAL 》 的英文短文,
题目
《MY FAVORITE ANIMAL 》 的英文短文,
答案
My favourite animal is tortoise.Tortoise is a cute animal.It has a short tail ,a little head and a hard shell.It likes to play in the water.When it is afraid of something,it will try his best to run f...
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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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