用英语讲述你童年的一件趣事,字数在50-70之间.
题目
用英语讲述你童年的一件趣事,字数在50-70之间.
答案
When I was little,I use to pray that something would happen so that I can spend a few days in a hospital.I hope that as a result,I could see my mother and that I can finally be in the centre of attent...
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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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