1,What letter is question?2,What letter is a drink?3,What letter is apart of theface?
题目
1,What letter is question?2,What letter is a drink?3,What letter is apart of theface?
4,What letter is an insect?5,What letter is avegetable?
答案
1y -why
2t-tea 3 i-eye 4 b -bee5 p-pea
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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