题目

完形填空 One night a man came to my house. He told me, There is a family with eight   1  .They haven't eaten anything for days. After I asked him where the family was, I took some  2  with me and left.     When I finally got to that family, I   3   those little children were so hungry that they could not say   4   . There was no sadness in their eyes, just the deep pain（痛苦）of hunger(饥饿). I gave the food to the mother, She took half of it, and then   5  . When she returned, I asked her, “   6   did you go? she gave me this simple   7    ,To如图，△ABC三个顶点C、A、B的坐标分别是C（0，-3）、A（x1，0）、B（x2，0），且x1＜x2，其中x1、x2是方程x2-2x-8=0的两个根．（1）求A、B两点的坐标；（2）点M是线段AB上的一个动点，过点M作MN∥BC，交AC于点N，连接CM．①当△CMN的面积与△AMN的面积相等时，求此时线段MN的长；②当△CMN的面积为2时，求点M的坐标．