In recent years,A girl may pass easily through the first grade,while boys
题目
In recent years,A girl may pass easily through the first grade,while boys
答案
阅读理解.A girl may pass easily through the first grades.While boys of her age bring home low marks,the girl may get easily good grades.Girls seem to have "better brains" in school.Why do so few girls...
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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