He said he ______ the league for two years.A.has joined B.has been in C.had been in D.joined
题目
He said he ______ the league for two years.A.has joined B.has been in C.had been in D.joined
为什么要选那个选项?
答案
选c.for two years表示是完成时,所以要排除D,从said可以看出是过去式,所以要排除A,B
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