if pople keep cutting down the forest,there will nowhere to live 还有,this is the book that i
题目
if pople keep cutting down the forest,there will nowhere to live 还有,this is the book that i
还有,this is the book that i am interested in 我想知道的是这种用法的语法.我记得以前还看过要省掉介词的,可是我记不起题目了.
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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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