talk about the friendship or your family
题目
talk about the friendship or your family
I want to know you story
or your can talk about your opinion
答案
My familyMy father was born in Toronto, Canada, he is an Engineer. My mother was born in Sydney, Australia, she is a primary school teacher. I have two younger sisters, one named Christina, the other ...
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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