They are the photos of my family 改为单数句 She is Guo jingjing‘s friend 改为复数句 On the floor is a white no
题目
They are the photos of my family 改为单数句 She is Guo jingjing‘s friend 改为复数句 On the floor is a white notebook 改为同义句
答案
this is the photo of my family
they are Guo Jingming's friends
a white notebook is on the floor
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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