What are these What are they What is that What is those 找出一个不正确的句子,::>_
题目
What are these What are they What is that What is those 找出一个不正确的句子,::>_
答案
最后一个：What is those
很明显,已经是those了,是复数,应该是：what are those?
就象第一个是：what are these?一样,要使用复数are而不是is
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