七年级下学期英语
题目
七年级下学期英语
帮我写一篇My winter holiday
答案
My winter holiday I had a happy holiday. I went to some interesting places. I visit my brother's family. He lives in nanjing.Nanjing is a very beautiful place. I stayed there for about 10 days. I vis...
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
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