题目

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。Dear Editor,I am writing to ask 【1】advice on my relationship with my teenage son. To tell the truth, I often struggle 【2】(get) along with him.A few days ago, we 【3】(quarrel) with each other. He was anxious about his skin because it started to become very oily, with lots of red spots. He is always angry these days and seems 【4】(little) confident. I keep telling 【5】(he)these changes are normal and that things will turn out just fine. Of course, I wanted to show my concern for已知，一次函数的图象与x轴y轴交于A、B两点。 （1）求A、B两点的坐标；（2）求线段AB的长度；（3）在x轴上是否存在点C，使△ABC为等腰三角形，若存在，请直接写出C点的坐标；若不存在，请说明理由。