哪位大侠帮我分析一下下面这句话的语法啊?When times become difficult (and you know they sometimes wil
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哪位大侠帮我分析一下下面这句话的语法啊?When times become difficult (and you know they sometimes wil
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你这个句子不完整,我刚好回答了一个类似句子,以下是我给那个问题的回答,请参考When times become difficult (and you know they sometimes will),remember a moment in your life that was filled with joy and happ...
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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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