We got yo know each other three years ago.(改同义句).( )three years( ）we got to know each other
题目
We got yo know each other three years ago.(改同义句).( )three years( ）we got to know each other
答案
We got yo know each other three years ago.(改同义句).( It‘s)three years( since）we got to know each other
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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