My favourite means of transportation以这个为题目写一篇100字左右的作文!
题目
My favourite means of transportation以这个为题目写一篇100字左右的作文!
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There are so many means of transportation,such as bus,taxi,subway.Bus is cheap but a little slow.every time i should go out early to wait for some time.and it takes long time to get the destination.Ta...
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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