Please write a passage of basketball in about 90 words according to the following mind map．

　Basketball

James Naismith invented basketball．The first basketball game was played on December 21，1981．Basketball became an Olympic event in Berlin in 1936．The NBA games are the most famous in the world and the CBA games are becoming more popular in China．There are two teams in a basketball game．Players on the same team must work together to get the ball into the other team's basket．At the same time，they need to stop the competing team from getting the ball into their own basket．

Basketball is very popular around the world．It is played by 100 million people in over 200 countries．　．