she was acknowledged by her tutor with an excellent essay by referring to different kinds of informa
题目
she was acknowledged by her tutor with an excellent essay by referring to different kinds of information.句中的by是引导方式状语么,by能否去掉,使后面referring to different kinds of information作后置定语呢,句意不改变是么
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