写出下列缩略形式的完全形式
题目
写出下列缩略形式的完全形式
1Let's= 2He's= 3What's= 4It's= 5She's got=
6We're 7I've got= 8can't= 9don't=
答案
1 let us
2 he is 或者he has
3 what is
4 it has 或者 it has
5 she has got
6 we are
7 i have got
8 can not
9 do not
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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