题目internet is very important 求英语作文 要求八十单词 求英语作文
题目
题目internet is very important 求英语作文 要求八十单词 求英语作文
答案
Every coin has its two sides. So does internet. With the remarkable development of our modernisation, information technology acts in a pretty crucial role. The internet stands out in that it provide u...
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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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