he didn't think people() much attention to their clothing at that time A pay B paid
题目
he didn't think people() much attention to their clothing at that time A pay B paid
答案
B
时态要一致,主句是didn't think,一般过去时,从句也要用过去时态
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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