Basketball

             Basketball stems from （起源于） US. the 1936 year 11th Olympic Games list as the regulation （常规） game project. Manager ball is 28 meters, the width 15 meters. The backboard length 1.20 meters, the width 1.80 meters, the bottom end is apart from the ground 2.75 meters. Ball weight 600~650 grams. The entire （整个） audience competes 40 minutes.