英语句子改错.All students are here,we can go now.
题目
英语句子改错.All students are here,we can go now.
1.All students are here,we can go now.
2.The group is waiting for their plane to Beijing.
3.The old woman took the child by a hand.
答案
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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