用it的全部用法造句
题目
用it的全部用法造句
答案
1．作人称代词John likes playing Pingpong./ He always does it in the afternoon.(指代上下文提到的事物)/It's time we went home./ How far is it from here to your home / It is getting warmer and warmer./ I...
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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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