this is my eraser.(改为一般疑问句) Is it a pencil?(做肯定回答)

this is my eraser.(改为一般疑问句) Is it a pencil?(做肯定回答)

题目
this is my eraser.(改为一般疑问句) Is it a pencil?(做肯定回答)
this is my dictionary.(改为否定句形式)
It's a pencil.(对a pencil提问)
my teiephone number is 5554327.(对号码提问)
( )
It’s a sharpener.(根据回答写问题)
答案
Is this your eraser?
Yes,it is.
This is not my dictionary.
What is this?
What is your teleplone number?
What is this?
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
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
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