找高手帮忙写篇英语作文
题目
找高手帮忙写篇英语作文
Why football is becoming more and more popular?
答案
Have you ever wondered why football is becoming more and more popular worldwide?Football,otherwise known as soccer,is played all over the world.The exciting gaming process is extremely exciting,both 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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