求一篇英语作文~80词 网络的利弊!

求一篇英语作文~80词 网络的利弊!

题目
求一篇英语作文~80词 网络的利弊!
答案
Now,so many students like surfing in the internet.They can find information easily with computer.They can do shopping online.They can do homework online and save a lot of time.Also,they can chant with their freinds freely in the internet.
But some students spend too much time on playing computer game.They don't study hard any longer .In order to keep health,I think the middle school students should get away from computer game.
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
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
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