用所给词的恰当形式填空:What( )you( )(do) l am ( )(write)to my( )(uncle)daughter
题目
用所给词的恰当形式填空:What( )you( )(do) l am ( )(write)to my( )(uncle)daughter
答案
:What(are )you(doing )(do) l am (writing )(write)to my(uncle's )(uncle)daughter
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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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