题目

已知数轴上两点对应的数分别为，点为数轴上一点，其对应的数为（1）若点到点点的距离相等，则点对应的数是_______________________；（2）当点到点点的距离之和为，则_______________________． 答案：【答案】； 或 【解析】（1）根据点P到点A、点B的距离相等，结合数轴可得答案；（2）此题要分两种情况：①当P在AB左侧时，②当P在AB右侧时，然后再列出方程求解即可．解：（1）如图，若点P到点A、点B的距离相等，P为AB的中点，BP=PA．依题意得3-x=x-（-1），解得x=1．故点P对应的数是1．故答案为：1； 第二节  根据对话内容，从对话后的选项中选出能填入空白处的最最佳选项, 并在答题卡上将该项涂黑。选项中有两项多余选项。（共5小题；每小题2分，满分10分） --- Jim, what are you going to do tonight? --- I have no idea. What about you? ---__________61________. ---Sounds good! But I hear there will be a talk at 7:00 in the City Hall. ---_________62_________. --- The History of Music. ________63_________. --- Me, too. ___________64_______. --- Good idea! But we must be quick. We have only twenty minutes left. ---_________65______. --- We have to take a taxi because it’s quite a long way. --- Can we ask John to go with us? He likes music, too. --- Ok. Let’s go.m A.How shall we get there? B.What’s the talk about? C.Where shall we go? D.I’m interested in music. E.Shall we go to see a film? F.That’s all right. G.Why not go there together?