题目

Today's TopicParents are asked to guard school gates every morning. Do you think it’s reasonable?YESNOSun Zhenyao, 13, ShanghaiLi Mingyi,14, BeijingSafety comes first. Most primary schools suggest that parents should come along with their children on their way to school. I don’t think it’s a problem for the parents. They just have to stay at the school gate a little _______. Also, it’s very crowded around school gates in the morning. Traffic accidents may happen. Only _______school guards is not enough. If parents can help, there will be fewer accidents. On weekdays, guarding schools a求经过直线x-2y+1=0和2x+3y+9=0的交点，且在坐标轴上截距相等的直线方程．