急需新概念(二)23课课文
题目
急需新概念(二)23课课文
答案
是这课吗?Lesson 23 A New House I had a letter from my sister yesterday.She lives in Nigeria.In her letter,she said that she would come to England next year.If she comes,she will get a surprise.We are now living in a beautiful new house in the country.Work on it had begun before my sister left.The house was completed five months ago.In my letter,I told her that she could stay with us.The house has many large rooms and there is a lovely garden.It is a very modern house,so it looks strange to some people.It must be the only modern house in the district.
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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