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【单选题】Common sense would tell us that physically active children may be more likely to become active and healthy adults．73 In the United States，elementary and middle schools are advised to give students two and a half hours of ohvsical activity a week．That is what theCenters forDiseaseControl and Prevention and theAmerican HeartAssociation l’ecommend (推荐)．They say high schools should provide about four hours of physical activity each week．Yet many schools across the country have reduced their physical education programs．Criticism of the cuts has led in some places to efforts to give students more time for exercise，not less．
The future health ofAmericans may depend on it．Just this week，a study reported that life expectancy(预期寿命)has fallen or is no longer increasing in some parts of the United States．The situation 1s worst among poor people in the southern states．and especially women．Public health researchers say it is largely the result ofincreases in obesity(肥胖)，smoking and high blood pressure．They also blame difierences in health services around the country．
In 2006，a study found that only four percent of elementary schools provided daily physical education all year for all grades．This was true of eight percent of middle schools and two percent of high schools.74 The study also found that 22 percent of a11 schools did not reauire student to take any P.E、(体育课)
CharleneBurgeson is the executive director of the NationalAssociation for Sport and PhysicalEducation．She says one problem for PE．teachers iS that schools are under pressure to put more time into academic subjects．Also，parents may agree that children need exercise in school．Yet many parents today still have bad memories of being chosen last for teams because teachers favored the good athletes in class．
But experts say PE、classes have change
D、They say the goal has moved away fromcompetition and toward personal performance．as a way to build a lifetime of activity．These days，teachers often lead activities like weight training and yoga . 75 Some parents like the idea of avoiding competitive sports in PE、class．Yet others surely dislike that ide
A、In the end, schools may find themselves in a no-win situation．
Why are schools recommended to give students certain time for sports

A、Because difierent schools set up difrerent physical education programs．
Because the physical activity of children will influence their health in adulthoo
D、
C．Because nowadays children spend too much time on their studies．

D、Because only four percent of elementary schools provided daily physical education．
网考网参考答案：B
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