帮忙写一篇80词左右的初三英语作文
题目
帮忙写一篇80词左右的初三英语作文
I learn English for ( )
答案
I learn English for myself.Why should we learn English?The answer is quite simple for me!When I first start to learn English, I thought learning English is useless but to get a good grade in exams. Bu...
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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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