①AO=BO；

②OE=OF；

③△EAM≌△CFN；

④△EAO≌△CNO，

其中正确的是（   ）

阅读理解

    My name is Sun Liang．Li Feng is my cousin．He is thirteen years old and I'm twelve years old．We study in the same school but not in the same grade．He is in Grade 8 and I'm in Grade 7．

    Li Feng is tall and strong．He plays basketball well．He thinks it's a good way to stay healthy．So he often plays basketball with his classmates in the playground．He likes collecting the pictures of famous basketball players．Last Sunday,he watched a basketball match．He was happy because he saw his favourite basketball star．

    I also like playing sports but music is my favourite．I think it's a good way to relax after a busy day．My father is a music teacher and he is good at playing the piano．So I learn from him to play the piano．It was my birthday yesterday．I had a party and I was happy．

根据材料内容选择最佳答案。

向阳中学数学兴趣小组对关于x的方程（m+1）$x^{m^2+1}$+（m﹣2）x﹣1=0提出了下列问题：

（1）是否存在m的值，使方程为一元二次方程？若存在，求出m的值，并解此方程；

（2）是否存在m的值，使方程为一元一次方程？若存在，求出m的值，并解此方程．