英语作文:周末计划
题目
英语作文:周末计划
答案
In this weekend,I have a plan,if tomorrow is a sunny day.Saturday morning,I am going to visit my grandparents.after lunch I have good friends and I go to the movies and football.At night,I can stay ho...
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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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