so sucessful was her business that Marie was able to sep up new branches elsenuhere.
题目
so sucessful was her business that Marie was able to sep up new branches elsenuhere.
答案
玛丽的生意做得很好,以至于她可以在其他地方建立新的分部..
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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