文档介绍：Basketball is one of the most popular and widely viewed sports in the world.
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what is the basketball?
is a team sport in which two teams of five players try to score points by throwing or "shooting" a ball through the top of a basketball hoop while following a set of rules.
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The team with more points at the end of the game wins, but additional time (overtime) may be issued when the scores of both teams are the same.
The ball can be advanced on the court by bouncing it while walking or running (dribbling) or passing it to a teammate.
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regulation basketball hoop consists of a rim 18 inches ( cm) in diameter and 10 feet ( m) high mounted to a backboard. A team can score a field goal by shooting the ball through the hoop during regular play.
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backboard 篮板 back court 后场 free-throw lane 罚球圈 free-throw line 罚球线 front court 前场 game clock 比赛用时钟 halftime 中场休息时间 hoop 篮框，篮圈 mid-court 中场 net 篮网 painted area 禁区
rim 篮框，篮圈 scoring table 记录台，记分台 shot clock 时钟 three-point line 三分线 wing （左、右两边）底线区域
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Five position of the basketball
组织后卫--point guard
得分后卫--shooting guard
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中锋--center
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小前锋--small forward
大前锋--power forward
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Basketball positions
center 
One of the three standard player positions. Centers are generally the tallest players on the floor, responsible mainly for scoring, rebounding, and defense near the basket.
guard 
One of the three standard player positions. Today, guards are typically classified in two broad categories. Point guards have strong ballhandling and passing skills and are typically used to run the offense. Shooting guards, as the name implies, are generally the team's best shooters, and are very often the leading scorers on their teams. Some players, often referred to as combo guards, combine the features of both.
forward 
One of the three standard player positions. F