Tom is a boy of eight .He and Jim are in the s( ) class .Jim is good at maths .
题目
Tom is a boy of eight .He and Jim are in the s( ) class .Jim is good at maths .
But Tom is not a good student .He doesn't like to go to school.He can o( ) count from 1 to 10 .
知道的请帮忙下，每格一词，首字母已给。
答案
same only
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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