英语作文如何保持健康
题目
英语作文如何保持健康
答案
It's important for us to be healthy all our life.We can't study or work well without healthy body.
There're many ways to keep healthy.First of all,we should keep taking exercises every day.We can walk to school instead of taking a bus.After school,we can spend an hour playing ball games.If we live in a high-rise,we can walk upstairs or downstairs.Second,we should have a balanced diet.Finally,we must remember:"Early to bed,early to rise is the way to keep healthy,wealthy and wise."
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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