写一篇120字的英语作文是关于去参观世界奇观的.用过去时.我今年初三
题目
写一篇120字的英语作文是关于去参观世界奇观的.用过去时.我今年初三
答案
The Great Wall is one of the greatest man-made wonders in the world.It's about 6,700 kilometres long,6.7 metres high and 4.5 metres high,with a his tory of over 2,000 years.From far distance,it looks ...
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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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