要写一篇英语作文,Watching TV,
题目
要写一篇英语作文,Watching TV,
答案
Most children like watching TV for several reasons.Firstly,they can know what happen around the world from TV news,and therefore become more knowledgeable.secondly,TVs are very convennient.Children ca...
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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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