用英语回答What can you do online?
题目
用英语回答What can you do online?
答案
We can do many useful things on line.For example,we can look for information on the internet,chat with friends and get to know the news around the world.
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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