If we want to keep up with the high pace of modern life,we had better learn to make the right choice
题目
If we want to keep up with the high pace of modern life,we had better learn to make the right choices about what and how we
答案
如果我们希望跟上现代生活的快节奏,我们最好了解该吃什么、怎么吃才是正确的.
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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