谁能帮我写篇how to earn money
题目
谁能帮我写篇how to earn money
答案
How to earn money .For us middle school students,it is very hard to earn money.But if your family is very poor,and your parents aren' well on the tome.You has to get a part-time job to make some money...
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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