This is the only article of these that___written by him.A was B were C is D are 选啥?
题目
This is the only article of these that___written by him.A was B were C is D are 选啥?
答案
答案A C是错误的
这是这些文章中的唯一写的一篇!
写文章是过去的,用过去时态,排除C和D 主语是the only article 谓语动词用单数所以答案只有A
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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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