300字英语作文.,不要翻译过来的.水平高点的!
题目
300字英语作文.,不要翻译过来的.水平高点的!
答案
When we talk about belonging, we attribute as the anchor our families and friends.But many people often want to tell the more importance of them.many people think that the family is the most important...
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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