our country has five ___________years of history A thousand B thousands C thousand of Dthousands of
题目
our country has five ___________years of history A thousand B thousands C thousand of Dthousands of
答案
A表示数量级的词前面有具体数字时用单数(thousand,hundred,million,dozen)后面接of 时用复数
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