David is a high school student.He likes ____soccer vert much.Soccer is very popular all ____the worl
题目
David is a high school student.He likes ____soccer vert much.Soccer is very popular all ____the world.It can help to build him ____.
He plays soccer quite a ____.He ____the school soccer team last year.Last week,thier team played ____the team of NO.1 High School.He____his best,but he missde a good ____.He was very sad.____ the help of his teammates,they won the game at last.He is going to be a soccer player whenm he ____up
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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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