Recently we told you about a finding that more years of school could help students get hig

Recently we told you about a finding that more years of school could help students get higherscores on intelligence tests．That was the finding of a study of teenage males in Norway．Now，other research shows that physical activity may help students do better in their classes .
The research comes as educators in some countries are reducing time for activities like physical education．They are using the time instead for academic subjects like maths and reading．The studies appeared between 2007 and 2013．They included more than 55，000 children，aged 6 to 18．
Amika Singh：“Based on the results of our study，we can conclude that being physically active is beneficial for academic performance. There are，first，Physiological explanations，like more blood flow, and so more oxygen to the brain．Being physically active means there are more hormones(荷尔蒙)produced like endorphins(内啡肽)．And endorphins make your stress level lower and your mood improved, which means you also perform better.”
Also，students involved in organized sports learn rules and how to follow them．This could improve their classroom behavior and help them keep their mind on their work．
The study leaves some questions unanswered，however．Ms．Stash says it is not possible to say whether the amount or kind of activity affected the level of academic improvement．This is because of differences among the studies .
Also．they were mostly observational studies．An observational study is where researchers do not do controlled comparisons．They only describe what they observe．So they might observe a link that students who are more active often have better grades．But that does not necessarily mean being active was the cause of those higher grades．
The researchers said they found only two high - quality studies．They called for more high-
quality studies to confirm their findings．They also pointed out that “outcomes for other parts of the world may be quite different. ”
Still，the general finding was that physically active kids are more likely to do better in school．Ms．Singh says schools should consider that finding before they cut physical education programs．Her paper on “Physical Activity and Performance at School”is published in the Archives of Pediatric and Adolescent Medicine．
【小题1】The passage mainly tells us that ＿＿＿＿A．a research on physical education has been done by the researchersB．there exists a possibility that physical activity leads to higher gradesC．the amount or kind of activity directly affects academic levelD．the research shows that the children aged 6 to 1 8 don't do sports【小题2】Which of the following is TRUE?A．Being mentally active is good for academic subjects．B．The more hormones you have，the more stressed you will get．C．They have found many high-quality studies to prove the research．D．The educators in the research think studies，not exercise，mean much to students．【小题3】The underlined sentence in Paragraph 7 probably means ＿＿＿＿.A．good marks result from high-quality studyB．findings probably vary in different areasC．physical activity will spread all over the worldD．academic performance depends on the surroundings【小题4】What's the purpose of writing the passage?A．To call our attention to the sports at school．B．To introduce all types of physical activities．C．To represent the academic performance．D．To improve students' health ．B

(答案→)B 解析：试题分析: 本文讲的是体育锻炼能提高学习成绩吗？【小题1】B 细节理解题。根据第一段提到Recently we told you about a finding that more years of school could help students get higherscores on intelligence tests．That was the finding of a study of teenage males in Norway．Now，other research shows that physical activity may help students do better in their classes最近我们讲述了关于上学时间更长能够帮助学生在智力测验中得到更高分数的一项发现，这是针对挪威青年男子的一项研究。现在其它研究表明，体育锻炼可能帮助学生在功课上做得更好，所以选B项。【小题2】D 细节理解题。根据第五段提到The study leaves some questions unanswered，however．Ms．Stash says it is not possible to say whether the amount or kind of activity affected the level of academic improvement．This is because of differences among the studies然而该研究还留下了一些未解之谜。辛格女士说，无法确定是运动量还是运动类型影响到学术水平的提高。因为这些研究之间存在差异，所以D项正确。【小题3】B 细节理解题。根据第七段提到The researchers said they found only two high - quality studies．They called for more high-quality studies to confirm their findings．They also pointed out that “outcomes for other parts of the world may be quite different.研究人员表示，他们只发现两项高质量研究。他们呼吁进行更多高质量研究以确认他们的发现。他们还指出，“世界上其它地区的结果可能大不一样，所以选B项。【小题4】A 细节理解题。根据最后一段提到Still，the general finding was that physically active kids are more likely to do better in school．Ms．Singh says schools should consider that finding before they cut physical education programs．尽管如此，总的结论是，喜欢运动的孩子更容易在学校表现更好。辛格女士说，学校应该在削减体育课之前，考虑一下这一研究发现，所以选A项。

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