题目

写出焦点在轴上,,的双曲线的标准方程                  ． 答案：  找出下列句中的错误，并改正：( )1.My name am Mr Smart.A B C D( )2.My favourite toys is kites.A B C D E( )3.What your favourite toy is ?A B C D E( )4.My favourite colour is a redA B C D E F( )5.He favourite toy is a ship.A B C D E F