求理解父母的英语作文 100~120个词.
题目
求理解父母的英语作文 100~120个词.
答案
One day more than a decade ago,our parents with tears,smiles and happiness to greet our arrival.But when we came to the world at the moment,the parents have more of a heavy work - to take care of us.A...
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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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