题目

 - I’m surprised to hear that Lily and Peter have__________.   - So am I. They seemed very happy together when I last saw them.         A. broken up                  B. finished up C. divided up            D. closed up 答案：A在图所示的电路中，电源电压保持不变．闭合电键S后，将滑动变阻器滑片P向右移动时，变大的是（　　）A. 电表A示数与电表A1示数的差值B. 电表V示数与电表A示数的比值C. 电表V示数与电表A示数的乘积D. 电表V示数与电表A1示数的比值