She_ more visits to her parents.She has been regretting not doing so since they passed away.
题目
She_ more visits to her parents.She has been regretting not doing so since they passed away.
A.should pay B.would pay C.should have paid D.would have paid
答案
C.should have paid
从下文She has been regretting not doing so since they passed away.可知
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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