all the students should hand out the two essays no later than next saturday.
题目
all the students should hand out the two essays no later than next saturday.
答案
所有的学生应该上交这两篇,不迟于下星期六
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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