preparations for future career 作文一篇~
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preparations for future career 作文一篇~
答案
preparations for future career With the rapid development of our society,we are now facing challenges more frequently.Then what can we do to deal with these challenges? Some people believe that the...
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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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