题目

根据下面对话的情景，在每个空白处填入一个适当的语句，使对话恢复完整。(Jim found a bag on the playground. When he picked it up, he saw Ann coming to him. )Jim: Excuse me,【1】?Ann: No, it isn’t. Mine is in the classroom. Jim:【2】?Ann: Can it be Helen’s? She is looking for her bag. Jim:【3】. Hers is green, but this one is white. Ann: Let’s see what’s in the bag. Oh, a hair band. Jim: It might belong to Grace. Grace has long hair, and she always forgets things. Ann: 【4】. Jim: Then it must be hers. Grace is on the school table tennis team. Ann: 如图，在△ABC中，∠ABC=2∠C．AC的垂直平分线分别交BC，AC于点D，E．线段AB与CD相等吗？试说明理由．