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问:地球上每秒钟发生多少次闪电?答:平均每秒钟约100次。不过,这些还只是击中地面的闪电。在任一分钟里,地球上会发生1000多次雷暴,触发约6000次闪电,其中大部分属于云对云闪电。 相似文献
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沈友清 《山西广播电视大学学报》2008,13(3):24-25
通过调查学生对健康知识和保健工作的认知状况,以及学生存在的不良生活方式和行为习惯,了解健康教育和保健工作开展的现状,为进一步探讨健康教育与保健工作开展的思路与措施奠定基础,积极推进健康教育和保健工作的发展. 相似文献
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体育保健与知识分子健康 总被引:2,自引:0,他引:2
化西婷 《北京工业职业技术学院学报》2006,5(3):105-107
知识分子作为社会现代化建设的一支重要力量,其健康问题日益成为社会关注的焦点.知识分子具有很高的文化素养,但对健康和自我保健意识却很薄弱,在疾病的防治以及身心保健方面的知识较为匮乏,这就要求广大知识分子多了解体育保健知识,增强体质,增进自身健康,这对于社会有着重大的战略意义. 相似文献
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通过访问调查法、问卷调查法对众多太极拳爱好者进行抽样调查,发现他们中许多人对太极拳的基本技术、健身祛病原理、练养结合及注意事项的掌握、认识与了解存在一定的问题,应予以纠正,以利于更好地推广太极拳活动,促进全民健身的活动的健康发展。 相似文献
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《中学生英语》2022,(3)
<正>In the past,I hated exercise.My mother often advised me doing~(1)some sports.But I didn't accept her advice.I thought it tiring to do sports every day and it was very difficult for me to do some sports.So I was very weak and I often got ill.I also got fatter and fatter.I wanted to improve the situation.So I tried to do sports every day.It often took me one and a half hours to do sports every day.Now I love sports very much and I am very strong.I seldom catch a cold but~(2)I am not fat any more.I am also much strong~(3).Life lies in movement. I hope everyone can learn from me.Do exercise every day.I believe everyone can be stronger and stronger. 相似文献
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《中学生英语》2016,(13)
<正>Today I want to say something about sports and health.I do exercise for an hour every day.I often run and go swimming.And I play ball games with my friends at school.But I like swimming best.I think it's cool to swim in the water.I think this exercise makes me feel better.It also makes me strong and 相似文献