Recently,a survey was dong to find out what high school students think is important the survey was
题目
Recently,a survey was dong to find out what high school students think is important the survey was
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答案
很高兴为您
最近的一项调查显示,练找出中学生的调查认为是很重要的
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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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