人类的神经调节的特征是（  ）

已知关于x的方程（m-1）xm2+1+2x-3=0是一元二次方程，则m的值为（　　）

                                                                                          次北固山下
                                                                                                王湾
                                                                                 客路青山外，行舟绿水前。
                                                                                 潮平两岸阔，风正一帆悬。
                                                                                 海日生残夜，江春入旧年。
                                                                                 乡书何处达？归雁洛阳边。