写一篇关于lifelong education的英语作文
题目
写一篇关于lifelong education的英语作文
答案
With the development of society,the lifelong education becomes more importent and more importent.There are much more competition in daily life ,so we must keep on learning.Lifelong education has vario...
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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