高三英语作文语法it is common for us students还是it is common for our students?
题目
高三英语作文语法it is common for us students还是it is common for our students?
还是it is common for we students?
答案
高三英语作文语法it is common for us students还是it is common for our students?It is common for us students ( student 为 us 的同位语；指的是一个人,同一个对象,我们学生）因此这个标题意思：对我们学生来说...
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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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