Where can you see on the table?A map of China 哪里错了
题目
Where can you see on the table?A map of China 哪里错了
There is some money in the purse 改为一般疑问句并做否定回答怎么改
答案
is there any money in the purse?
no, there isn't
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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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