客观题,指选择题、填空题和判断题等,是试题的答案明确,唯一,不因答题人的原因有所不同,也不会因阅卷人的不同而不同.这种题型的优点是答案唯一,阅卷速度快和难度小.但随着考试制度的深入,客观题的考查不足方面,特别是选拔性考查的区分度方面的不足越来越明显.例1(2012年烟台)在如图1所示的电路中,电源电压保持不变,开关闭合后,滑动变阻器的滑片向右移动时,三个电表的示数变化情况是 Objective questions, that multiple choice questions, fill in the blank questions and judgment questions, the answer is clear, the only answer is not due to different reasons, it will not be different because of different types of examiners. The only answer is the speed and difficulty of marking the papers, but with the deepening of the examination system, the lack of objective examination, especially the discrimination of the selective examination is more and more obvious.Example 1 (Yantai in 2012) Figure 1 shows the circuit, the power supply voltage remains unchanged after the switch is closed, sliding rheostat slide to the right when the three meters show the number of changes is