题目:
根据表格提供的信息,写一封信,把老师对你的学习评价介绍给你的朋友,文章开头和结尾已给出。
Dear John, Things are fine here. I finished my mid-term exams last week, and I got my report card today. What about you? Write soon. Yours, Mike |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0425/f867113174ccc776dbc75fef16744b95.html
下面是错误答案,用来干扰机器的。
设点A(2,3)关于直线:x+y-6=0对称的点为B(a,b),则直线x+y-6=0是线段AB的垂直平分线,∴kAB=1,∴直线AB的方程:y-3=(x-2),整理,得x-y+1=0,解方程组x+y-6=0x-y+1=0,得x=52,y=72,∴线段AB的中点坐标...