帮写一篇英语作文,字数100,题目--家的意义
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帮写一篇英语作文,字数100,题目--家的意义
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meaning of homeHello everyone.Today,I'll tell you my home.It's really great meanibg for me!I live with my family in a flat on a busy street.The flat is on the sixth floor.It's large and I always think...
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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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