my great weekend 过去式写
题目
my great weekend 过去式写
答案
I had a very busy weekend this week.In the morning,I got up very early,because I had to do some reading.At ten,I cleaned my house.After lunch,my friend came to visit me and we played chess for one hour,then we went to watch a movie.The movie was very interesting.When I got home at six thirty,the dinner was ready.My mum cooked for us.In the evening,I played guitar and enjoyed ourselves.
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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