You get sick by what you put in your mouth,but you can be hurt by what comes out of your mouth
题目
You get sick by what you put in your mouth,but you can be hurt by what comes out of your mouth
一句谚语的解释~You get sick by what you put in your mouth,but you can be hurt by what comes out of your
答案
病从口入,祸从口出
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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