china future
题目
china future
写一篇有关祖国未来的英语作文 800字左右
答案
Think about the future .The buddies olden days,we had suffered humiliation,hundred years exerts oneself,Looking at today,we with unyielding backbone stand proudly in the world nation community of the ...
举一反三
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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