关于书能否被电脑替代的英语作文
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关于书能否被电脑替代的英语作文
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People often say we have entered the electronic age. Computers have become the center of life. No one can live and work without computers. In the future, everyone can work and study at home hefore a P...
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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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