英语作文 what is Tom usually do after school
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英语作文 what is Tom usually do after school
答案
what is Tom usually do after schoolTom is a third-year student,the daily learning tasks are heavy,so every day after school,Tom has to go home,start non-stop homework,review what has learned one day,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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