sat作文例子
题目
sat作文例子
Some people think they can learn better by themselves than with a teacher .others think that it is always better to have a teacher.Which do you prefer?
答案
have a teacher例子一Alexander the Great,one of the greatest man since the dawn of human civilization,would never achieve his great success that he built the empire across 3 continents if he had not le...
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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