英语翻译
题目
英语翻译
Everyone needs sleep.In fact,all living things need sleep.Having a sound and good rest makes us healthy.It is believed that our brain develops best during sleep.It helps all our systems work well when we are awake.Sleep allows our brain to reorganize all events during the day and will improve our memory development.
For a student,eight to ten hours of sleep is required to give him or her energy for the following day.A good sleep allows them to grow physically and mentally (心理上).
With enough sleep at night,students would be able to wake up early and be ready for school activities.They will be able to listen carefully in class and would have the ability to memorize the things that they learn and remember them in the future.
Eight hours of sleep makes students active through the whole day at school.They would be able to perform well in class,take down notes and finish their homework.When they have slept well,they can easily understand their lessons.Good sleep prepares
答案
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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