1.The toilet is dirty 改一般疑问句 2.ltis a library 改复数句 3.ls this tall boy thin?改肯定句
题目
1.The toilet is dirty 改一般疑问句 2.ltis a library 改复数句 3.ls this tall boy thin?改肯定句
4.The mouse has a long tail.改否定句 句意不变 5 The kite is yellow 对划线部分提问 这是划线yellow
答案
1 Is the toilet dirty
2 They are libraries
3 This tall boy is thin
4 The mouse doesn't have a short tail
5 What is colour of the kite?
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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