The living standard of the people in China ________ greatly these years.
题目
The living standard of the people in China ________ greatly these years.
A.is raised B.is risen C.has been raised D.has been risen
为什么选C,而不是D?
答案
has been risen
是升起不是提高的意思
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