题目

I wonder what will become of my daughter. ________endless homework ,she also bears other leading loads such as revision and recitation. A．As well as  B．With C．Except D．Rather than   答案：A在平面直角坐标系中，半径为以点为圆心的圆的标准方程为；则类似的，在空间直角坐标系中，半径为以为球心的球的标准方程为 .