九年级英语Unit12 SectionB 的3b作文怎么写
题目
九年级英语Unit12 SectionB 的3b作文怎么写
答案
These days,something unusual is happening in my neighborhood.Mr.Chu often hears footsteps in the hallway at late night.His wife thinks it might be the neighbors.Lao Zheng,a retired worker,saw someone ...
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