我的数码生活英语作文100~150词之间
题目
我的数码生活英语作文100~150词之间
答案
Our digital lifeThere is no doubt that our life is becoming more suitable.But what has changedthe course of our life? Digital products have played an dispensible role. It is afact that our age is an...
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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