一百字英语作文,一件有趣的事
题目
一百字英语作文,一件有趣的事
答案
Today, a funny thing happened in my home. In the morning, my fathergot up very early. His father 4 points. After the washing up for a while.After washing clothes a watch is fifteen minutes at 6. He ca...
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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