Bài 25. Dài hơn ngắn hơn

"Together we can do everything. "

	Giới Thiệu Nội dung chính: Dài hơn ngắn hơn

[linkxem]https://docs.google.com/presentation/d/1lKS7zMtKcGvXODIYX-RfEpJB7wbKbXrk/edit#slide=id.p1/preview[/linkxem] [linktai]https://docs.google.com/presentation/d/1lKS7zMtKcGvXODIYX-RfEpJB7wbKbXrk/edit#slide=id.p1/view[/linktai]