Today,I find so many people struggling,often working harder,simply because they are trapped by
题目
Today,I find so many people struggling,often working harder,simply because they are trapped by
simply because they are trapped by old ieads.我不清楚这个句子中 struggling,often working harder,作什么成分,为什么中间不加and.哪位高手帮我分析下句型
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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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