关于food的英文作文?
题目
关于food的英文作文?
答案
Chinese Food China is very famous for its food in the world.There are many kinds of food in China.They're Cantonese food,Sichuan food,Shanghai food,Hunan food and so on.Generally speaking,Cantonese fo...
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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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