题目

如图所示，圆锥的母线长是3，底面半径是1，A是底面圆周上一点，从点A出发绕侧面一周，再回到点A的最短的路线长是（ ）A．6B．C．3D．3 答案：A解析:略At last, the girl was made and began to do her homework.A. to stop listening to musicB. to stop to listen to musicC. stop listening to musicD. stop to listen to music