江泽民指出：“一个世纪以来，中国人民在前进道路上经历了三次历史性的巨大变化，产生了三位站在时代前列的伟大人物：孙中山、***、邓小平。三民主义、***思想、邓小平理论及‘三个代表’重要思想成为20世纪以来中国最重大的理论成果。”

结合所学知识，回答下列问题：

完形填空
    One Saturday morning, John and his mother went 1 a shoe shop 2John a pair of new shoes. Mrs. Lee put her bag on a chair3she looked at some shoes. She could not see 4she liked and went away. Suddenly(突然) she said, “Oh, my bag, someone 5it away!” All the other people in the shop stopped 6 and looked at her. John ran after the man at once(立刻). A few minutes 7 , John came back with 8. He 9 it to his mother. She opened the bag and had a look in10.Then she said,“ Oh, god, nothing is lost.”

已知x﹣y=$\sqrt{3}$，则代数式（x+1）²﹣2x+y（y﹣2x）的值是____ ．