文档介绍：2014 届高三英语二轮复****专题突破精品训练:阅读理解 A A ll across the country, kids are heading back to school. D espite advice from the nation ’s secretary of health and human services, recess ( 课间休息) and physical education have in many schools been cut back or cancel ed. While most of kids are eager to catch up with friends, the general feeling is that “ playtime is over. ” S ummer vacation does offer most children a bit of free play time – the sort that leads to physical activity and anized play, often in short supply during the school year. Still, it’s not enough. Play time shouldn ’t be limited to summer vacation: it’s important all year. For most American children in the past, “ going out to play ” was the norm. Today, according toa University of Michigan study, children spend 50 percent less time outside than they did just 20 years ago. T here isa direct line between lack of play and some frightening public health and social trends: tragic statistics for obesity ( 肥胖), million children diagnosed with attention deficit disorder (ADD) ( 儿童多动症), an increase in childhood depression and classroom behavioral problems, and an inability to interact well with peers. Just an hour a day of active play — running, chasing, games like dodge ball — can provide intense skill learning. Physical activity is known to lessen the symptoms of mild attention deficit disorder, and reduces the risk of childhood obe