(+1)+(+2)+(-3)+(-4)+(+5)+(+6)+(-7).+(+2005)+(+2006)

来源：学生作业帮助网编辑：作业帮时间：2024/06/30 17:39:18

(+1)+(+2)+(-3)+(-4)+(+5)+(+6)+(-7).+(+2005)+(+2006)
(+1)+(+2)+(-3)+(-4)+(+5)+(+6)+(-7).+(+2005)+(+2006)

(+1)+(+2)+(-3)+(-4)+(+5)+(+6)+(-7).+(+2005)+(+2006)
瞎猜一下 2007

1 2 3 4 1 2 3 4 1 2 3 4 1,2,3,4, 1 2 3 4 1 2 3 4 1,2,3,4, 1,2,3,4, 1,2,3,4, 1,2,3,4, 1 2 3 4 1,2,3,4, 1,2,3,4, 1,2,3,4, 1、2、3、4 1+2+3×4 1,2,3,4 1+2+3+4+.