What is the good manners?请帮忙举例,写一段短文,
题目
What is the good manners?请帮忙举例,写一段短文,
答案
good manner is to be polite, polite to old people, respect them. Polite to teachers, to our work managers, etc.
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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