英语翻译
题目
英语翻译
12300 127000 80670 3670900021 670020 2300600 65000899 500600960
答案
1．twelve thousand three hundred
2．one hundred and twenty seven thousand
3．eighty thousand six hundred and seventy
4．three billion six hundred and seventy million nine hundred
thousand and twenty one
5．six hundred and seventy thousand and twenty
6．two million three hundred thousand six hundred
7．sixty five million eight hundred and ninety nine
8．five hundred million six hundred thousand nine hundred and
sixty
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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