谚语的来源?
题目
谚语的来源?
There is a skeleton in every house.家家有本难念的经.
答案
There is a skeleton in every house.Something to annoy and to be kept out of sight.1 That is my skeleton—my trouble,the “crook in my lot.” 2 A woman had an only son who obtained an appointment in In...
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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