来点在操场上的英语对话,越多越好!
题目
来点在操场上的英语对话,越多越好!
答案
A: hello JerryB: hello Mary!A: what are you doing?B: I am going to have a PE lesson! now, i am waiting for the teacher.A: Really? i am going to have a PE lesson too! why don't we play some sports whil...
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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