最值得记忆的一天 作文
题目
最值得记忆的一天 作文
急要,写几句
答案
Today is a normal day.but as for me,it's an wongerful day.When I am after school as rural,I met a friend that we hadn't met for 10 yers since his home moved away from our hometown.We were so happy after so many years we met again.we even couldn't recognise each orther because he changed greatly since we are apart.
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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