题目

书面表达。请以“妈妈的爱 Mother’s Love”为题写一篇不少于30字的作文。_____________________________________________________________________________________________________________________________________________________________________ 答案：【答案】范文Mother’s LoveIt is easy to have conflicts between children and families, because they live together for a long time and feelings are always ignored by each other. But the mother’s love to their children will never change. Sometimes I say bad words to my mother and she will forgive me soon and love me all the time. I must be a good girl.【解析】孩子和家人之间经常如图，已知线段AC∥y轴，点B在第一象限，且AO平分∠BAC，AB交y轴与G，连OB、OC．（1）判断△AOG的形状，并予以证明；（2）若点B、C关于y轴对称，求证：AO⊥BO．