题目

E        The question of what children learn, and how they should learn it, is continually being debated and redebated. Nobody dares any longer to defend the old system, the parrot-fashion (way of learning by repeating what others say) of learning lessons, the grammar-with-a-whip (鞭子) system, which was good enough for our grandparents. The theories of modern psychology have stepped in to argue that we must understand the needs of our children. Children are not just small adults; they are children who must be respected as such.        Well, you may say, this is as it should be, 如图所示的电路中，电源两端电压保持不变，当开关S闭合时，灯L正常发光．如果将滑动变阻器的滑片P向右滑动，下列说法中正确的是（ ）A．电压表的示数变大，灯L变亮B．电压表的示数变小，灯L变暗C．电压表的示数变大，灯L变暗D．电压表的示数变小，灯L变亮