四年级英文周记80字
题目
四年级英文周记80字
答案
Today is Sunday.The weather is fine.I have done a lot of works in the past week,such as maths,nature,music etc.And I want to have a rest today.What shall I do?Oh,I shall to find me classmate named Xiaogang.And I am going to play football with him.Then I want to eat a few apples in my lunch.
In the afternoon,I shall do some lessons for the next week.In the invening,I shall see some cartoon books.So,that's OK.Just write this much.
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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