做红包 英语作文
题目
做红包 英语作文
急用!120字以下
答案
New about 1 year have been changed for new clothes,friends ,have had used clothes hang down.In people's day-by-day hoping,New Year has finally arrived at ,people has been busy immediately.The minor bo...
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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