寻几则英语小故事(稍微长点),
题目
寻几则英语小故事(稍微长点),
1则小故事,不要太长,随便什么主题都可以.
答案
Once upon a time,there were four mice that lived in a wall in the field.Summer was coming,and so the mice came out of the wall to collect berries,nuts,corn and straw.Everyone was working very hard,day...
举一反三
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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