When I got home,I found that my room had been broken(break)into and lot of things stolen (steal
题目
When I got home,I found that my room had been broken(break)into and lot of things stolen (steal
为什么要用had been broken 而不是was broken?为什么用stolen 而不是用 were stole?
答案
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
最新试题
热门考点