题目

有理数a，b，c在数轴上的位置如图所示，则化简|a+b|+|c+b|﹣|b﹣a|的结果是． 答案：【1】﹣2a﹣b﹣c---How was your recent trip to Sichuan? ---I’ve never had_______ one before.A. a pleasant B. a more pleasant C. a most pleasant D. the most pleasant