某日,一老师在黑板上写下一方程:x+y=快乐,要求解出x与y。全班学生冥思苦想一下午,交出如下五花八门的答案。解一:x=小时候穿着开了口子的球鞋在巷口“跳房子”:y=左手拿一串糖葫芦,右手拿一团棉花糖。解二:x=体育课翻单杠差点“缺胳膊断腿”;y=漂亮女生莞尔一 One day, a teacher wrote an equation on the blackboard: x+y=happy, asking for x and y. Students in the class meditation in the afternoon, hand in the following various answers. Solution One: x = When he was a little child, he wore a sneaker with a hole in his mouth. He hopped in the alley: y= He took a bunch of candied fruit in his left hand, and a bunch of cotton candy in his right hand. Solution two: x = physical education level bar nearly “broken arm broken leg”; y = pretty girls smile one