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中学生体育锻炼现状及其时间(共6篇)
中学生体育锻炼现状及其时间（一）：
、为调查某地中学生平均每人每天参加体育锻炼时间 （单位：分钟），按锻炼时间分下列四种情况统计：①0～10分钟；②11～20分钟；③21～30分钟；④30分钟以上．有10000名中学生参加了此项活动，下图是此次调查中某一项的流程图，其输出的结果是6200，则平均每天参加体育锻炼时间在0～20分钟内的学生的频率是（ ）
 |
| B |
由程序框图可知， 表示的是0～20分钟内的学生的频数， 表示的是21分钟以上的学生的频数。因为输出结果是6200，所以可知平均每天参加体育锻炼时间在0～20分钟内的学生的频数为10000-6200，则其频率为 ，故选B |
中学生体育锻炼现状及其时间（二）：
下列调查中，适宜采用全面调查（普查）方式的是（ ）A．对全国中学生每天体育锻炼的时间的调查
B．对全市市场上奶粉质量情况的调查
C．对我市市民月人均收入的调查
D．对我国首架军用舰载机各零部件的调查
A，对全国中学生每天体育锻炼的时间的调查不必全面调查，大概知道因为普查工作量大，适合抽样调查；
B，对全市市场上奶粉质量情况的调查，如果普查奶粉就不能卖了，适合抽样调查；
C，对我市市民月人均收入的调查不必全面调查，人数众多，普查工作量太大，适合抽样调查；
D，对我国首架军用舰载机各零部件的调查，需要全面调查，事关重大，普查结果准确．
故选：D．
中学生体育锻炼现状及其时间（三）：
书面表达 假如你叫李华,学校初三年纪同学正在开展异常讨论,主题是,初三学生要不要参加体育锻炼,请根书面表达
假如你叫李华,学校初三年纪同学正在开展异常讨论,主题是,初三学生要不要参加体育锻炼,请根据下面所提供的信息,谈谈你自己的看法.
内容包括:1,中学生学校生活现状.2,应该合理适当参加锻炼,原因,至少3点.3,可以怎样合理安排时间.
Dear editor
Our school held a debate on whether middleschool stuents should take part in the body exercise. Form our discussion, there turns two points, 60 percents students holds that taking exercise is good for your health,while 40 percents students clings to the ideas that it"s wast a lot of time on body exercising .As we know,sport plays an important role in our daily lives.
Whenever you do some exercise,you can get a whole new refresh feeling through your body.It really does good to you.For example,going out to play ball games, which is becoming more and more popular these days,can get rid of bad moods,and help you be energetic again.In order to keep fit,you can keep a habbit of doing sports regularly.You"ll benefit a lot from it.
All in all,we"d better pick up our balls,and go out,to have an exciting game.Ready?Go?
lihua,
faithfuly【中学生体育锻炼现状及其时间】
中学生体育锻炼现状及其时间（四）：
求大神帮忙写英语作文.现在提倡每天运动一小时,全国各地的中学生都在加强体育锻炼.假如你是Li Hua,请你给你的笔友Tom写一封60词的书信.介绍自己进行的体育锻炼的情况,并且着重介绍一个自己喜欢的运动项目以及喜欢这个项目的原因.开头
Dear Tom
How are you these days?It"s good for us to do exercise for an hour every day.
越快越好
Of course, we have. Physical fitness.! Exercise one hour a day, physical fitness will not consume too much, does not affect the normal learning,and to exercise every day, training students" willpower, students developthe habit of persevere. You want to have a strong willpower, a good habit to persevere, not better help students learn and grow? Childrenare the future pillars of the motherland, the children"s request not only to study well, but also to have a strong body, strong will, only in this way can provoke the responsibility of countries in the future. And now thechild most was an only child, parents spoiling their lack of courage to face difficulty setbacks, so our education should focus on the cultivation of their strength and courage to face setbacks. Exercise also plays a role of mental exercise, sports activities can also make the students open mind, keep optimistic mood. The meaning of sports, the great man Mao Zedong early in his article "the sports spirit" has been discussed in detail. And now still advocates, illustrate the importance of physical exercise. So as a student, we should take part in physical activities, and every day for an hour to exercise, it can exercise the students, so don"t be skeptical, should be actively involved in the.
中学生体育锻炼现状及其时间（五）：
你所在的研究性学习小组对“中学生的健康状况”进行了一次调查，调查结果如下：
请根据以上信息写一篇英语短文，在英文校报上投稿。内容包括：中学生的健康现状、原因及专家建议。 【写作要求】 1. 只能使用5个句子表达全部内容； 2. 作文中不能出现真实姓名和学校名称； 3. 短文的开头已给出，不计在5个句子中。 Last week, we made a survey about middle school students’ health condition. |
| Last week, some of us made a survey about middle school students’ health. The survey shows that the general health of middle school students is declining year by year, with more people having the problem of overweight. One of the reasons could be that they have a heavy load in their study so that they seldom do physical exercises. What’s more, they don’t do labor work like housework and they don’t have a balanced diet. To solve the problem, experts advise that we should not chat on line so often in so that we can have enough sleep and we should do sports for at least one hour a day. Besides, we’d better eat more of fruits and vegetables and refuse junk foods. |
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中学生体育锻炼现状及其时间（六）：
| 跳起摸高是中学生常进行的一项体育运动。某中学生身高1.80 m，质量70kg。他站立举臂，手指摸到的高度为2.25 m。如果他先下蹲，再用力蹬地向上跳起，同时举臂，手指摸到的高度为2.70 m。设他从蹬地到离开地面所用的时间为0.3 s。求： （1）他刚离地跳起时的速度大小； （2）他与地面间的平均作用力F的大小。（取g=10m/s 2 ） |
| （1）跳起后重心升高h＝2.70－2.25＝0.45m 根据竖直上抛的最大高度公式  解得  （2）人蹬地过程，受到重力mg和地面对它向上的支持力N作用 根据牛顿定律N－mg＝ma 运动学规律v＝at 解得  |
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