---- you were arguing about last night has been settled.A that B which C it D what
题目
---- you were arguing about last night has been settled.A that B which C it D what
答案
D what
句子里缺少主语,所以这是一个主语从句,what you were arguing about意思是你们所争论的事情,其余三个选项在这里都不能作主语.
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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