大小单双稳赢方法

简介：The boys in the class cheered, and the girls chirped, and began to line up in an orderly manner to take pictures. The tall ones stood at the back, and the short ones stood in front. The students from Class 2 and Class 3 were surprised when they came out of the box, and they all stood there. While watching, some people suggested that their class do this, but where was the photographer at this late hour?