DO not read very much farther ahead until you understand what is being said
题目
DO not read very much farther ahead until you understand what is being said
为什么最后那个宾语从句what is being said .
said为什么前面还要加一个being呢..如果是被动语态那么有一个is不就可以表示了吗?为什么还要一个being..
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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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