What will students be like in the year 2050?What will they study at school?What will they do at home
题目
What will students be like in the year 2050?What will they study at school?What will they do at home?Please write a paragraph according to your imagination.
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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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