could it be in the valley in(which)we had a picnic(that)you left behind your keys and wallet
题目
could it be in the valley in(which)we had a picnic(that)you left behind your keys and wallet
为什么后面一空要认为是强调句来理解呢?为什么不能用where
答案
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