题目

On a cold November afternoon, my mother and I were walking home from a pizza store. We were dressed warmly and equipped with the rented（租借）video we had been_______for. I was feeling a little ______, as I was carrying our shopping, bags of snacks and the______.They were so heavy that I decided to______some things. So I started to walk towards the garbage can______I noticed a poor man walking his bike out of the restaurant in front of us. He______a paper bag with his dirty hand. He headed over to another nearby garbage can and started______it.I suddenly felt very_______because I was abou已知某个一次函数图象经过点A（0，2）、B（2，0）是这个函数图象上的两点．（1）求一次函数的解析式．（2）点C（x1，y1）、D（x2，y2）是这个函数图象上的两点．若x1＜x2，比较y1，y2的大小．