Selecting a mobile phone for personal use is not easy task because technology_____so rapidly.(2002 春
题目
Selecting a mobile phone for personal use is not easy task because technology_____so rapidly.(2002 春 上海)
A.is changing x05x05x05B.has changed
C.will have changed x05x05D.will change
答案
A.is changing.
has changed 规在完成式表示变革这个动作已经完成,但事实上科技还在不断变革中,所要要选一个进行时态:is changing.
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