写一篇关于是否该上网的英语作文,100字以内
题目
写一篇关于是否该上网的英语作文,100字以内
答案
Internet AccessShould we access the Internet?This is a question we all talk about and think hard about.Many teachers don't like us to be on the Internet because they feel threatened,though we are very...
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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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