the colour of his socks is different from __of mine A one B that c it D this
题目
the colour of his socks is different from __of mine A one B that c it D this
理由具体些
答案
that
前面提到过的,不用it
袜子是复数,不用one
this,更不对
that,指代socks,定语从句
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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