英语作文:日记(80词左右)
题目
英语作文:日记(80词左右)
答案
Sunday ,February 25
Today my mother and I went to visit my grandparents .We helped them to do some housework .My father and I did some cleaning .My mother did some washing for them .After we had finished cleaning and washing ,my parents cooked lunch in the kitchen .I talked with my grandparents about my school life .They were very happy to listen to me .At about 12:00,we had a big meal together .How happy our family were .
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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