第一篇：人为什么要睡觉英语演讲稿三分钟
my chinese dream 我的中国梦 i am very glad to stand here to give thier a short speech.today my topic is that the youth are the future of motherland 很高兴站在这里做这篇短小的演讲，我演讲的主题是青年是祖国的未来。
在准备英语演讲比赛的时候，我本想简单地从网上搜索一些文章作为我演讲的内容。我看过很多文章，有著名主持人的、北大教授的、大学生的，也有初中生的。但是看完之后，我放弃了当初的想法，我甚至为当初的想法感到有一些羞愧。因为今天我站在这里向大家演讲的主题，是一个庄重而严肃的主题；是一个充满荣耀与自豪的主题；是每一个中华儿女共同期盼的主题。每个人都有属于他们自己的中国梦，而我，当然也有一直萦绕在心怀只属于我的中国梦。
so what?s my chinese dream ? finally i will announce.we had learned a lot of knowledge and understood a lot of truth in the book.we had a basic concept to our country at that time.we know that our country is full of sunshine , and we are the future of our country, and our dreams are to be the hope of our motherland.我的中国梦是什么样的？先卖个关子。
记得刚刚上学那会儿，我们天真无邪。在课本里，我们学到了很多很多知识，也明白了很多很多道理，我们对祖国也有了一个最基本的概念。我们知道我们的祖国到处充满阳光，正在慢慢发展，而我们，就是祖国未来的花朵，未来的希望。我们梦想将来能够成为祖国的希望。
这，是我们最初的中国梦。最真诚的我们，最真诚的梦。
但是，不知道什么时候开始，我们长大了，生活似乎一下子变得和以前不太一样了，与此同时，虽然我们很不想承认但是却又不得不承认的是，我们的思想，我们的为人处世观，我们对我们祖国的看法，也潜移默化中慢慢开始了转变。我们的社会变得到处充满欺骗、冷漠、勾心斗角、压力、腐败、险恶，我们变得暴躁，不冷静，愤世嫉俗。我们的国家，似乎也开始变得千疮百孔。而好多我们亲爱的祖国委以重任培养的青年学生们变得轻浮、急躁，更别提什么梦想，什么中国梦了？ are we sick, or is our dear motherland sick? 我很惊讶，当大街上有老人摔倒，我们不敢再去扶起；我很难过，当有人做了好事被报道，更多的人说他做作；我很伤心，当我看到我们众多的青年人变得冷漠、市侩、欺诈以及缺乏理想。
到底是我们病了，还是我们亲爱的祖国病了？ i dont want to talk about the construction of our country politics, and also speak impassioned speech on the diaoyu island event.i just want to appeal young people,showing the side of youth,good and confidence.we must learn to organize our own thoughts, correct our own concept, and change our direction to the right side in future life.china dream actually lies in our young generation, especially of the intellectuals.我的中国梦，不想大谈政治，也不想对钓鱼岛事件发表慷慨激昂的演讲。我只想呼吁，呼吁我们年轻人，呼吁我们祖国的希望能够将我们的青春一面，将我们的善良一面，将我们的自信一面好好展现出来。我们要学会整理自己的思想，端正自己看问题的观念，摆正自己的人生方向。我们的中国梦实际上正掌握在我们自己手上，掌握在我们年青一代，尤其是知识分子手上。也许，一个人，是渺小的；但是当他和祖国联系起来时，就是伟大的。也许，一个梦想，是渺小的，但是当它成为祖国的梦想时，就是不可估量的。也许，我无法用自己一个人的力量撬起整个中国，但是我们千千万万年轻人一起为祖国的梦想去奋斗时，我们的祖国就足以令世界颤抖、动容。i dream to construct our beauty china with millions of young people who have the same dream.we do it without exaggeration but only with persistence.我梦想和万千具有相同梦想的年轻人去建设我们的美丽中国，没有虚浮，只有执着，只有奋斗，只有勇于担当。这就是我的中国梦！that is my speech,thanks everyone.我的演讲就到这里，谢谢大家。we are the world ,we are the future 世界是我们的，未来是我们的 someone said “we are reading the first verse of the first chapter of a book, whose pages are infinite”.i don?t know who wrote these words, but i?ve always liked them as a reminder that the future can be anything we want it to be.we are all in the position of the farmers.if we plant a good seed ,we reap a good harvest.if we plant nothing at all, we harvest nothing at all.一些人说?我们正在读一本无穷的书中的第一章的第一节。?我不知道谁写了这些话，但是我一直很喜欢它，因为它提醒了我，我们能够创造我们想要的未来。we are young.“how to spend the youth?” it is a meaningful question.to answer it, first i have to ask “what do you understand by the word youth?” youth is not a time of life, it?s a state of mind.it?s not a matter of rosy cheeks, red lips or supple knees.it?s the matter of the will.it?s the freshness of the deep spring of life.我们都是农夫。如果我们播下好的种子，我们将会丰收。如果我们的种子很差，有很多草籽，收割的将是无用的庄稼。如果我们什么也不播种，什么收获也没有。youth means a temperamental predominance of courage over timidity of the appetite , for adventure over the love of ease.this often exists in a man of 60 more than a boy of 20.nobody grows old merely by a number of years.we grow old by deserting our ideals.years wrinkle the skin , but to give up enthusiasm wrinkles the soul.worry , fear , self –distrust bows the heart and turns the spirit back to dust.我们是年轻的。?怎样度过青春??这是个有意义的问题。为了去回答它，我首先要问?从‘青春’这个词中你能理解到什么?? 青春不是人生的一个时期，而是精神的一种状态。青春不是桃面、丹唇、柔膝，而是深沉的意志。青春是生命的深泉在涌流.whether 60 of 16 , there is in every human being ?s heart the lure of wonders, the unfailing childlike appetite of what?s next and the joy of the game of living.in the center of your heart and my heart there?s a wireless station : so long as it receives messages of beauty , hope ,cheer, courage and power from men and from the infinite, so long as you are young.a poet said “to see a world in a grain of sand, and a heaven in a wild flower, hold infinity in the palm of your hand, and eternity in an hour.several days ago, i had a chance to listen to a lecture.i learnt a lot there.i?d like to share it with all of you.let?s show our right palms.we can see three lines that show how our love.career and life is.i have a short line of life.what about yours? i wondered whether we could see our future in this way.well, let?s make a fist.where is our future? where is our love, career, and life? tell me.yeah, it is in our hands.it is held in ourselves.一位诗人说?从一粒沙看世界，从一朵花看天堂，把无限放在你的手掌，永恒在一刹那里收藏?。几天前，我有了一个听讲座的机会，从中我学到了很多东西。现在，我想把这些与大家共享。让我们伸出右手，我们可以看到手掌中的展示我们的爱，事业和生活的三条线。我在生活方面这条线很短，那你们的呢?我想知道我们是否可以用这种办法去看我们的未来。好的，让我们一起握拳。我们的未来在哪儿?我们的爱、事业和生活在哪儿?告诉我!是的，它们就在我们的手中。它们被我们自己掌握着。we all want the future to be better than the past.but the future can go better itself.don?t cry because it is over, smile because it happened.from the past, we?ve learnt that the life is tough, but we are tougher.we?ve learnt that we can?t choose how we feel, but we can choose what篇二：三分钟英文演讲稿
三分钟英文演讲稿
演讲稿一：三分钟英文演讲稿 three months ago,twenty six boys and four girls gathered together on the ground of the university of geosciences,at that moment ,they formed the class numbered 111112.and there is also another story i would like to mention here,our class ranked low in this month,but there are not blames,not critics,not anything like you should have done it better.we just saywe can,and we will do it better and better step after step.演讲稿二：三分钟英文演讲稿 he footsteps of the 2014 world expo is getting closer and closer to us, civilized and harmonious call is still ringing in my ears.shanghai, china obtained the right to host the world expo 2014, expo 2014 shanghai china will be a world event, the development of shanghais new round of golden opportunity, as it is an important embodiment of our national spirit.world expo is a great influence and a long history of international activities, is the largest gathering of human beings.people from around the world gathered in one place display their products and skills, boast of their hometown and motherland.expo set the culmination of human civilization, which has a unique appeal, make you feel surging.we expect the majority of teachers will be great enthusiasm for the world expo into practical action to meet the world expo, the expo will be a total growth, and the city of development, the development of shanghai devote their efforts to advance hand in hand with shanghai.演讲稿三：三分钟英文演讲稿 good evening, ladies and gentlemen: id like to start with a group of pictures.modern and advanced? this society forgets, and ignores the other two thirds of human beings.its far from the ideal!we call ideal as a utopian, a place where reality does not exist.a few people still look forward to the ideals.we make fun of them, considering they are naive.will we still be content to live in such a society, if misfortune drops to us? no!of cause not!when we feel the warmth of the sun, these people, endure great sorrows and pains.can we imagine that? they are our brother and sisters!facing them, will we still have the mood shouting for our own freedom? facing them, will we still want to have more and more unnecessary stuff? they are unable to meet their needs, even the basic needs of survival!everyone, as a member of humanity, shouldnt feel ashamed? our luxury deprived their lives, our indifference violated our soul, and our barbarity destroyed human civilization!whats the ideal society? its a society no one worries about their living, a society no one is refused from education, a society everyone can pursue his/her own happiness!the ideal society is filled with love, joy and kindness.in that society, we can touch the others hearts, we can share our dreams and most important, we can just be the true men!lets break the ethnic divide, bridge the gap between rich and poor, hand in hand, to build a great wall, protecting us from evil;to construct a steady bridge, connecting reality to the ideal society!lets pursue for that, thats the only way to the bright future!they are watching us!thank you!演讲稿四：三分钟英文演讲稿 good morning,dear teacher and my friends.its a very intresting topic today.i think my dad was a hero for me when i was a young child.wed go fishing, walks, and other fun things for a kid.every child has a good and great father,篇三：英语三分钟演讲稿 english speech good afternoon everybody!its my honor to speak here and i am very glad to share my topic with all of you.today id like to talk about “my dream”.i do not just have one dream, in fact, i have three.they are: a healthy life, a happy family and to travel my great country.i want to travel this great country of ours.i want to see the beauty of our country.i want to see the miracles that made this country great!i want to go from the east to west, from the north all the way down to the south!i have a dream, that one day i can travel and see my country with my family and friends!if that is not possible, seeing my country on my own is good enough also.if i can fulfill all three of my dreams in life, then god can take me away.i would be happy, and l would have lived a full and prosperous life.thank you everyone for listening to my dreams.i thank you!篇四：三分钟英语励志演讲稿
三分钟英语励志演讲稿
演讲稿一：三分钟英语励志演讲稿 good afternoon，ladies and gentlemen！im very honored to stand here and give you a short speech!to begin with ,i want to ask a question.does everybody dream a good dream last night? actually ,today i want to talk about dream with you.of course, what i want to talk is not a dream you have last night,but a dream—— about life.everyone has dreams about life, different dreams at different life stage,and we need dreams to support us.dreams are like the stars we never reach in the sky,but like most mariners（水手）,we can chart our course by them.with the dream,we have a direction,with a direction, we were no longer confused.with the dream, there is hope,with hope, we have the strength to fight.my breath swallows the sky and make the yellow river overflow, my sword is famous in kyushu and it can collapse the five sacred mountains.at some time in the past i also had am bitious words and i had some achievements.each achievement results from my hard work.i always believe that if you want to have more achievements than others, you must work harder.hold fast to dreams, for if dreams die, life is a broken-winged bird that cannot fly.hold fast to dreams, for when dreams go, life is a barren field frozen with snow.so my dear friends, think of your old and maybe dead dreams.whatever it is, pick it up and make it alive from today.lets---move----out!thank you for your listening!演讲稿二：三分钟英语励志演讲稿——catch the star catch the star that holds your destiny, the one that forever twinkles w ithin your heart.accept the fact that not ev eryone is going to approve of the choices youve made.have faith in your judgment.catch the star that twinkles in your heart and it will lead you t o your destinys path.value your capabilities and talents for they are what make you truly unique.the greatest gifts in life are not purchased, but acquired through hard work and determination.演讲稿三：三分钟英语励志演讲稿——we are the world ,we are the future someone said we are reading the first verse of the first chapter of a book, whose pages are infinite.i dont know who wrote these words, but ive always liked them as a reminder that the future can be anything we want it to be.we are all in the position of the farmers.if we plant a good seed ,we reap a good harvest.if we plant nothing at all, we harvest nothing at all.we are young.how to spend the youth? it is a meaningful question.to answer it, first i have to ask what do you understand by the word youth? youth is not a time of life, its a state of mind.its not a matter of rosy cheeks, red lips or supple knees.its the matter of the will.its the freshness of the deep spring of life.a poet said to see a world in a grain of sand, and a heaven in a wild flower, hold infinity in the palm of your hand, and eternity in an hour.several days ago, i had a chance to listen to a lecture.i learnt a lot there.id like to share it with all of you.lets show our right palms.we can see three lines that show how our love.career and life is.i have a short line of life.what about yours? i wondered whether we could see our future in this way.well, lets make a fist.where is our future? where is our love, career, and life? tell me.yeah, it is in our hands.it is held in ourselves.we all want the future to be better than the past.but the future can go better itself.dont cry because it is over, smile because it happened.from the past, weve learnt that the life is tough, but we are tougher.weve learnt that we cant choose how we feel, but we can choose what about it.failure doesnt mean you dont have it, it does mean you should do it in a different way.failure doesnt mean you should give up, it does mean you must try harder.as what i said at the beginning, we are reading the first verse of the first chapter of a book, whose pages are infinite.the past has gone.nothing we do will change it.but the future is in front of us.believe that what we give to the world, the world will give to us.and from today on, lets be the owners of ourselves, and speak out we are the world, we are the future.篇五：英语三分钟演讲(文本)英语三分钟演讲（文本）
相信大家平时都很享受在音乐的空间里，今天很荣幸让我分享一些好听的欧美经典流行歌曲给大家。
i believe we usually are enjoyed in the music room, today i am honored to let me share something to listen to american classic pop songs to you.1、dancing queenabba 这首歌或许想表达每个女孩都有自己独特的青春魅力，所以要自信的唱出来跳起来，代表一种青春的热火。this song may want to express each girls all have their own unique charm, so be confident sing jumps, represents a youth and heat.2、burn it down--linkin park 林肯公园是一组来自美国加州的重金属摇滚乐队，是混合了流行金属、嘻哈、后垃圾摇滚、说唱、另类金属等多种风格元素的新金属乐队，曾获30多项奖项，得第37届美国人民选择奖-最受欢迎摇滚乐队。linkin park is a group from california american heavy metal rock band, is a mixture of new metal band pop metal, hip-hop, rap, post grunge, metal and other offbeat style elements, has been awarded the 30 prizes, thirty-seventh session of the american peoples choice awards-most popular rock band.3、50 ways to say goodbye--------------train 这首歌描述了一个不知怎么面对分手的事实，却依然深爱自己女友的伤心青年。歌曲用轻快悦耳的旋律一开始就人们震撼的听觉神经，像一路奔驰的越野车急速想超脱悲痛。the song describes a dont know how to face the fact that broke up, but still love his girlfriends sad youth.the song with the lively melody begins people shocked the auditory nerve, like a mercedes benz suv to road rapidly detached grief.4、me up when september ends-----------greenday 就在我过完暑假，即将降落南京的那班深圳航空就起响这首歌，伴随着夕阳余晖，让人陷入深思：我又要开始怎样的大二生活？刚离开那美丽的家乡是那么令人留恋。as i soon landed after the summer vacation, the class of shenzhen
5、i am yours-------------jason mraz 歌曲一开始就是舒缓流畅的吉他琴弦，人好似漫步在午后的乡村。歌曲在苦苦诉说对女孩的深情，但女孩却不顾一切的想挣开这份感情。歌词很简单，也很朗朗上口，不失为英语入门学习歌曲。the start of the song is affable smooth guitar strings, like a stroll in the afternoon the village people.song struggling to tell the girls affection, but the girl was fling caution to the winds the struggled this feeling.the lyrics are very simple, also very getword is english songs, learning portal.（乡村音乐代表人物：泰勒斯威夫特）this is known as the country music representative：taylor swift
6、just a dream----------------nelly 如果你喜欢偏摇滚的说唱歌曲，或者你是时尚的男/女孩，这首歌你绝对不能错过，黑人歌手带你在动感电音中摇摆起来。if you like partial rock rap song, or you are a fashion girl / boy, this song you absolutely can not miss, black singers take you sway in the dynamic electric music.著名的周董就是以说唱发家的the famous jay chou is to rap the fortune
7、payphone-------------maroon5 最后为大家介绍一首，一开始流畅的经典乐马上抓住你的听觉神经。还是这样和谐的乐队和音，在讲一个不珍惜就回不去的爱情故事。
第二篇：演讲稿“人为什么要长大呢？”
演讲稿
题目
《人为什么要长大呢》
有位名人讲过：当一个人开始回忆过去，他就已经老了。可是我想说：不对。当我刚刚来到保定，面对这个陌生的城市，面对这个陌生的校园，面对一张张陌生的面孔，我不禁回忆起以前点点滴滴的美好时光。想起小时候的天真，可爱；想起上学时代那些一起玩耍的伙伴。
小时候的我们，总把父母当成是自己心目中的神，总认为父母是无所不能的。可是我曾看到这样一则故事：有位母亲有一天想念自己的孩子，于是就冒着大雪带着自己亲自给孩子烤的番薯到学校去看望自己的孩子，可是刚到学校门口就被自己的孩子拉住。说是自己的母亲穿着太寒碜，怕在自己的同学面前丢脸。类似这样，孩子长大之后怕自己的父母给自己丢人，而不让父母在同学同事面前露脸的事，在当今社会真的是屡见不鲜。这些事情真的让我很费解，为什么当初自己心目中的神，那个自己曾经认为无所不能的人，随着自己一天天的长大，会把当成是给自己丢人
第三篇：TED英语演讲稿：我们为什么要睡觉
TED英语演讲稿：我们为什么要睡觉
简介：一生中，我们有三分之一的时间都在睡眠中度过。关于睡眠，你又了解多少?睡眠专家russell foster为我们解答为什么要睡觉，以及睡眠对健康的影响。
what i'd like to do today is talk about one of my favorite subjects, and that is the neuroscience of sleep.now, there is a sound--(alarm clock)--aah, it worked--a sound that is desperately, desperately familiar to most of us, and of course it's the sound of the alarm clock.and what that truly ghastly, awful sound does is stop the single most important behavioral experience that we have, and that's sleep.if you're an average sort of person, 36 percent of your life will be spent asleep, which means that if you live to 90, then 32 years will have been spent entirely asleep.now what that 32 years is telling us is that sleep at some level is important.and yet, for most of us, we don't give sleep a second thought.we throw it away.we really just don't think about sleep.and so what i'd like to do today is change your views, change your ideas and your thoughts about sleep.and the journey that i want to take you on, we need to start by going back in time.“enjoy the honey-heavy dew of slumber.” any ideas who said that? shakespeare's julius caesar.yes, let me give you a few more quotes.“o sleep, o gentle sleep, nature's soft nurse, how have i frighted thee?” shakespeare again, from--i won't say it--the scottish play.[correction: henry iv, part 2](laughter)from the same time: “sleep is the golden chain that ties health and our bodies together.” extremely prophetic, by thomas dekker, another elizabethan dramatist.but if we jump forward 400 years, the tone about sleep changes somewhat.this is from thomas edison, from the beginning of the 20th century.“sleep is a criminal waste of time and a heritage from our cave days.” bang.(laughter)and if we also jump into the 1980s, some of you may remember that margaret thatcher was reported to have said, “sleep is for wimps.” and of course the infamous--what was his name?--the infamous gordon gekko from “wall street” said, “money never sleeps.”
what do we do in the 20th century about sleep? well, of course, we use thomas edison's light bulb to invade the night, and we occupied the dark, and in the process of this occupation, we've treated sleep as an illness, almost.we've treated it as an enemy.at most now, i suppose, we tolerate the need for sleep, and at worst perhaps many of us think of sleep as an illness that needs some sort of a cure.and our ignorance about sleep is really quite profound.why is it? why do we abandon sleep in our thoughts? well, it's because you don't do anything much while you're asleep, it seems.you don't eat.you don't drink.and you don't have sex.well, most of us anyway.and so therefore it's--sorry.it's a complete waste of time, right? wrong.actually, sleep is an incredibly important part of our biology, and neuroscientists are beginning to explain why it's so very important.so let's move to the brain.now, here we have a brain.this is donated by a social scientist, and they said they didn't know what it was, or indeed how to use it, so--(laughter)sorry.so i borrowed it.i don't think they noticed.okay.(laughter)
the point i'm trying to make is that when you're asleep, this thing doesn't shut down.in fact, some areas of the brain are actually more active during the sleep state than during the wake state.the other thing that's really important about sleep is that it doesn't arise from a single structure within the brain, but is to some extent a network property, and if we flip the brain on its back--i love this little bit of spinal cord here--this bit here is the hypothalamus, and right under there is a whole raft of interesting structures, not least the biological clock.the biological clock tells us when it's good to be up, when it's good to be asleep, and what that structure does is interact with a whole raft of other areas within the hypothalamus，the
lateral
hypothalamus，the ventrolateral preoptic nuclei.all of those combine, and they send projections down to the brain stem here.the brain stem then projects forward and bathes the cortex, this wonderfully wrinkly bit over here, with neurotransmitters that keep us awake and essentially provide us with our consciousness.so sleep arises from a whole raft of different interactions within the brain, and essentially, sleep is turned on and off as a result of a range of
okay.so where have we got to? we've said that sleep is complicated and it takes 32 years of our life.but what i haven't explained is what sleep is about.so why do we sleep? and it won't surprise any of you that, of course, the scientists, we don't have a consensus.there are dozens of different ideas about why we sleep, and i'm going to outline three of those.the first is sort of the restoration idea, and it's somewhat intuitive.essentially, all the stuff we've burned up during the day, we restore, we replace, we rebuild during the night.and indeed, as an explanation, it goes back to aristotle, so that's, what, 2,300 years ago.it's gone in and out of fashion.it's fashionable at the moment because what's been shown is that within the brain, a whole raft of genes have been shown to be turned on only during sleep, and those genes are associated with restoration and metabolic pathways.so there's good evidence for the whole restoration hypothesis.what about energy conservation? again, perhaps intuitive.you essentially sleep to save calories.now, when you do the sums, though, it doesn't really pan out.if you compare an individual who has slept at night, or stayed awake and hasn't moved very much, the energy saving of sleeping is about 110 calories a night.now, that's the equivalent of a hot dog bun.now, i would say that a hot dog bun is kind of a meager return for such a complicated and demanding behavior as sleep.so i'm less convinced by the energy conservation idea.but the third idea i'm quite attracted to, which is brain processing and memory consolidation.what we know is that, if after you've tried to learn a task, and you sleep-deprive individuals, the ability to learn that task is smashed.it's really hugely attenuated.so sleep and memory consolidation is also very important.however, it's not just the laying down of memory and recalling it.what's turned out to be really exciting is that our ability to come up with novel solutions to complex problems is hugely enhanced by a night of sleep.in fact, it's been estimated to give us a threefold advantage.sleeping at night enhances our creativity.and what seems to be going on is that, in the brain, those neural connections that are important, those synaptic connections that are important, are linked and strengthened, while those that are less important tend to fade away and be less important.okay.so we've had three explanations for why we might sleep, and i think the important thing to realize is that the details will vary, and it's probable we sleep for multiple different reasons.but sleep is not an indulgence.it's not some sort of thing that we can take on board rather casually.i think that sleep was once likened to an upgrade from economy to business class, you know, the equiavlent of.it's not even an upgrade from economy to first class.the critical thing to realize is that if you don't sleep, you don't fly.essentially, you never get there, and what's extraordinary about much of our society these days is that we are desperately sleep-deprived.so let's now look at sleep deprivation.huge sectors of society are sleep-deprived, and let's look at our sleep-o-meter.so in the 1950s, good data suggests that most of us were getting around about eight hours of sleep a night.nowadays, we sleep one and a half to two hours less every night, so we're in the six-and-a-half-hours-every-night
league.for teenagers, it's worse, much worse.they need nine hours for full brain performance, and many of them, on a school night, are only getting five hours of sleep.it's simply not enough.if we think about other sectors of society, the aged, if you are aged, then your ability to sleep in a single block is somewhat disrupted, and many sleep, again, less than five hours a night.shift work.shift work is extraordinary, perhaps 20 percent of the working population, and the body clock does not shift to the demands of working at night.it's locked onto the same light-dark cycle as the rest of us.so when the poor old shift worker is going home to try and sleep during the day, desperately tired, the body clock is saying, “wake up.this is the time to be awake.” so the quality of sleep that you get as a night shift worker is usually very poor, again in that sort of five-hour region.and then, of course, tens of millions of people suffer from jet lag.so who here has jet lag? well, my goodness gracious.well, thank you very much indeed for not falling asleep, because that's what your brain is craving.one of the things that the brain does is indulge in micro-sleeps, this involuntary falling asleep, and you have essentially no control over it.now, micro-sleeps can be sort of somewhat embarrassing, but they can also be deadly.it's been estimated that 31 percent of drivers will fall asleep at the wheel at least once in their life, and in the , the statistics are pretty good: 100,000 accidents on the freeway have been associated with tiredness, loss of vigilance, and falling asleep.a hundred thousand a year.it's extraordinary.at another level of terror, we dip into the tragic accidents at chernobyl and indeed the space shuttle challenger, which was so tragically lost.and in the investigations that followed those disasters, poor judgment as a result of extended shift work and loss of vigilance and tiredness was attributed to a big chunk of those disasters.so when you're tired, and you lack sleep, you have poor memory, you have poor creativity, you have increased impulsiveness, and you have overall poor judgment.but my friends, it's so much worse than that.(laughter)
if you are a tired brain, the brain is craving things to wake it up.so drugs, stimulants.caffeine represents the stimulant of choice across much of the western world.much of the day is fueled by caffeine, and if you're a really naughty tired brain, nicotine.and of course, you're fueling the waking state with these stimulants, and then of course it gets to 11 o'clock at night, and the brain says to itself, “ah, well actually, i need to be asleep fairly shortly.what do we do about that when i'm feeling completely wired?” well, of course, you then resort to alcohol.now alcohol, short-term, you know, once or twice, to use to mildly sedate you, can be very useful.it can actually ease the sleep transition.but what you must be so aware of is that alcohol doesn't provide sleep, a biological mimic for sleep.it sedates you.so it actually harms some of the neural proccessing that's going on during memory consolidation and memory recall.so it's a short-term acute measure, but for goodness sake, don't become addicted to alcohol as a way of getting to sleep every night.another connection between loss of sleep is weight gain.if you sleep around about five hours or less every night, then you have a 50 percent likelihood of being obese.what's the connection here? well, sleep loss seems to give rise to the release of the hormone ghrelin, the hunger hormone.ghrelin is released.it gets to the brain.the brain says, “i need carbohydrates,” and what it does is seek out carbohydrates and particularly sugars.so there's a link between tiredness and the metabolic predisposition for weight gain.stress.tired people are massively stressed.and one of the things of stress, of course, is loss of memory, which is what i sort of just then had a little lapse of.but stress is so much more.so if you're acutely stressed, not a great problem, but it's sustained stress associated with sleep loss that's the problem.so sustained stress leads to suppressed immunity, and so tired people tend to have higher rates of overall infection, and there's some very good studies showing that shift workers, for example, have higher rates of cancer.increased levels of stress throw glucose into the circulation.glucose becomes a dominant part of the vasculature and essentially you become glucose intolerant.therefore, diabetes 2.stress increases cardiovascular disease as a result of raising blood pressure.so there's a whole raft of things associated with sleep loss that are more than just a mildly impaired brain, which is where i think most people think that sleep loss resides.so at this point in the talk, this is a nice time to think, well, do you think on the whole i'm getting enough sleep? so a quick show of hands.who feels that they're getting enough sleep here? oh.well, that's pretty impressive.good.we'll talk more about that later, about what are your tips.so most of us, of course, ask the question, “well, how do i know whether i'm getting enough sleep?” well, it's not rocket science.if you need an alarm clock to get you out of bed in the morning, if you are taking a long time to get up, if you need lots of stimulants, if you're grumpy, if you're irritable, if you're told by your work colleagues that you're looking tired and irritable, chances are you are sleep-deprived.listen to them.listen to yourself.what do you do? well--and this is slightly offensive--sleep for dummies: make your bedroom a haven for sleep.the first critical thing is make it as dark as you possibly can, and also make it slightly cool.very important.actually, reduce your amount of light exposure at least half an hour before you go to bed.light increases levels of alertness and will delay sleep.what's the last thing that most of us do before we go to bed? we stand in a massively lit bathroom looking into the mirror cleaning our teeth.it's the worst thing we can possibly do before we went to sleep.turn off those mobile phones.turn off those computers.turn off all of those things that are also going to excite the brain.try not to drink caffeine too late in the day, ideally not after lunch.now, we've set about reducing light exposure before you go to bed, but light exposure in the morning is very good at setting the biological clock to the light-dark cycle.so seek out morning light.basically, listen to yourself.wind down.do those sorts of things that you know are going to ease you off into the honey-heavy dew of slumber.okay.that's some facts.what about some myths?
teenagers are lazy.no.poor things.they have a biological predisposition to go to bed late and get up late, so give them a break.we need eight hours of sleep a night.that's an average.some people need more.some people need less.and what you need to do is listen to your body.do you need that much or do you need more? simple as that.old people need less sleep.not true.the sleep demands of the aged do not go down.essentially, sleep fragments and becomes less robust, but sleep requirements do not go down.and the fourth myth is, early to bed, early to rise makes a man healthy, wealthy and wise.well that's wrong at so many different levels.(laughter)there is no, no evidence that getting up early and going to bed early gives you more wealth at all.there's no difference in socioeconomic status.in my experience, the only difference between morning people and evening people is that those people that get up in the morning early are just horribly smug.(laughter)(applause)
okay.so for the last part, the last few minutes, what i want to do is change gears and talk about some really new, breaking areas of neuroscience, which is the association between mental health, mental illness and sleep disruption.we've known for 130 years that in severe mental illness, there is always, always sleep disruption, but it's been largely ignored.in the 1970s, when people started to think about this again, they said, “yes, well, of course you have sleep disruption in schizophrenia because they're on anti-psychotics.it's the anti-psychotics causing the sleep problems,” ignoring the fact that for a hundred years previously, sleep disruption
had
been
reported
before anti-psychotics.so what's going on? lots of groups, several groups are studying conditions like depression, schizophrenia and bipolar, and what's going on in terms of sleep disruption.we have a big study which we published last year on schizophrenia, and the data were quite extraordinary.in those individuals with schizophrenia, much of the time, they were awake during the night phase and then they were asleep during the day.other groups showed no 24-hour patterns whatsoever.their sleep was absolutely smashed.and some had no ability to regulate their sleep by the light-dark cycle.they were getting up later and later and later and later each night.it was smashed.so what's going on? and the really exciting news is that mental illness and sleep are not simply associated but they are physically linked within the brain.the neural networks that predispose you to normal sleep, give you normal sleep, and those that give you normal mental health are overlapping.and what's the evidence for that? well, genes that have been shown to be very important in the generation of normal sleep, when mutated, when changed, also predispose individuals to mental health problems.and last year, we published a study which showed that a gene that's been linked to schizophrenia, which, when mutated, also smashes the sleep.so we have evidence of a genuine mechanistic overlap between these two important systems.other work flowed from these studies.the first was that sleep disruption actually precedes certain types of mental illness, and we've shown that in those young individuals who are at high risk of developing bipolar disorder, they already have a sleep abnormality prior to any clinical diagnosis of bipolar.the other bit of data was that sleep disruption may actually exacerbate, make worse the mental illness state.my colleague dan freeman has used a range of agents which have stabilized sleep and reduced levels of paranoia in those individuals by 50 percent.so what have we got? we've got, in these connections, some really exciting things.in terms of the neuroscience, by understanding the neuroscience of these two systems, we're really beginning to understand how both sleep and mental illness are generated and regulated within the brain.the second area is that if we can use sleep and sleep disruption as an early warning signal, then we have the chance of going in.if we know that these individuals are vulnerable, early intervention then becomes possible.and the third, which i think is the most exciting, is that we can think of the sleep centers within the brain as a new therapeutic target.stabilize sleep in those individuals who are vulnerable, we can certainly make them healthier, but also alleviate some of the appalling symptoms of mental illness.so let me just finish.what i started by saying is take sleep seriously.our attitudes toward sleep are so very different from a pre-industrial age, when we were almost wrapped in a duvet.we used to understand intuitively the importance of sleep.and this isn't some sort of crystal-waving nonsense.this is a pragmatic response to good health.if you have good sleep, it increases your concentration, attention, decision-making, creativity, social skills, health.if you get sleep, it reduces your mood changes, your stress, your levels of anger, your impulsivity, and your tendency to drink and take drugs.and we finished by saying that an understanding of the neuroscience of sleep is really informing the way we think about some of the causes of mental illness, and indeed is providing us new ways to treat these incredibly debilitating conditions.jim butcher, the fantasy writer, said, “sleep is god.go worship.” and i can only recommend that you do the same.thank you for your attention.(applause)
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第四篇：人为什么要学习——5.4演讲稿
人为什么要学习？
尊敬的各位领导、评委、朋友们：
大家好，我演讲的题目是《人为什么要学习？》
在演讲前，请各位欣赏一幅图片：这是西安邮电大学的雕像，一男一女手挽手，女生拿书，男生托一地球，主题是智慧之源，但是有才的中国人能解读出另一个含义：读书顶个球。一座雕像两种解读，虽有玩笑成分，但不可谓不寓意深刻。
很多走出大学，步入社会的学生，他们从事与专业不对口的工作，或者是在专业学习的其他领域取得成就，所以会感慨说以前学的没多大用。但是从古到今劝人多读书的名言警句多不胜数。“少壮不努力，老大徒伤悲”，“黑发不知勤学早，白发方悔读书迟”，“莫等闲，白了少年头，空悲切”。难道是时代变了，学习已经跟不上潮流？——面对两种截然不同的观点，我们不禁要反思：人为什么要学习？
看到在座的各位，我突然有了答案：如果不会算数，不会写公文，不会分析判断，不会处理事件，不会交流和沟通，各位还有机会坐在这里为人民服务吗？学习是为了掌握技能，是生存的手段，是进步的阶梯。
1个月前我们镇3位同事凭优异成绩进入内江市第四批优秀干部人才递进培养班接受学习。人才递进培养班，顾名思义，学习会给他们更多选择的权利和更多成长进步的机会，我在这里也祝愿他们在今后的路途中能走得更好、更远。古话说“鸟欲高飞先振翅，人求上进先读书”，“世事洞明皆学问，人情练达即文章”。人的一生那么长，世界变化那么大，如果妄想用在校学习的二十年去应对未来变幻的六十年也未免太天真，如果说学习仅限于专业知识与技能，那学习未免太刻板，太狭隘。学习不仅仅是桌前的挑灯夜战，学习可以是一次机遇，一回讲话，一次提醒，也可以是一位人，一件事，一次感悟。在便民服务中心工作期间我曾遇到反复来询问自己抚恤金的一位老复员军人。“为什么钱还没到账啊，怎么别人比我的多呀，我可是参加过抗美援朝的……”。遇到这种情况，我们会解释安抚并帮助他，对吧？但老人唠叨起来让年轻的同志很为难。倒是有位老同事会有一搭没一搭地跟他唠嗑。“老人家你身体真是健康，你子女呢？生活怎么样啊？”一来二去，两人相谈胜欢，十几分钟后老人满足地回家了！老同事的几句温言细语化解了一场可能火星撞地球的激烈碰撞，“活到老，学到老”，跟身边人学习，确实令感触颇多——工作多点爱心，多点耐心，群众对政府的满意度自然就能够提高，干群关系会更和谐。学习不拘于形式，不拘于时间，不拘于地点，它能使你像海棉一样不断壮大成熟。
抛开个人不谈，中国近代发展史是一部血泪史，也是一部学习史、进步史。1840年，西方国家用炮弹轰开了闭关锁国的清朝大门，使国家饱经沧桑，人民吃尽苦头，这也迫使中国人开眼看世界，学习西方先进知识、法治制度、人文理念。经277年的艰苦卓绝，顽强奋斗，中国取得巨大进步，神舟上天，航母下水，政治、经济、科技等领域取得突破性成就，群众生活有了翻天覆地的变化。
血的教训告诉我们：落后就要挨打，唯有学习是进步之梯，成功之钥，发展之机。唯有学习，我们才能成长，才能甩开膀子，迈开步子，为实现“两个一百年”，实现“中国梦”的伟大理想而奋斗！
我的演讲完毕，谢谢！
第五篇：三分钟演讲稿要怎么写
导语：如何巧妙地开展好课前三分钟活动，巧妙地利用课前三分钟，可作为改进教学方式，增强学生学习兴趣，提高教学质量的一个突破口。三分钟演讲稿要怎么写？下面由小编为大家整理的三分钟演讲稿范文，希望可以帮助到大家！
三分钟演讲稿范文（1）
敬爱的陈老师、亲爱的同学们：
大家好！
今天是我课前三分钟演讲的时候了。在基督降生3XX年以前，有一个古希腊大政治家，雄辩家，是一个真正变态的家伙，不信，请允许我用他真实的经历给你们一一介绍！
德摩斯梯尼天生就是一个声音微弱、吐字不清而又气喘的人，（可以想象，他真是可怜！）尤其是“r ”这个字母，他怎么说也说不清楚，而且他的发音比刚学会说话的小孩还更糟糕！
据说，他为了克服这些唇齿上的缺陷，便把石头含在嘴里不断的练习发音，他站在海边练习，想把滔滔波浪喊得平静下来，你们说他变态吧？
当他站在台上面对听众演讲时，他经历了无数次的失败，尤其是在他第一次尝试演讲时，他的语句全混乱了，听众们都放声大笑。为了提高自己演讲能力，他特意挖了一个地洞，每天在里面练习他的声音，和演说的姿势，他还将自己的头发剃去了半边，以此来控制自己想上街的欲望。德摩斯梯尼的坚持终于取得了成果，他成为了自古以来古希腊最伟大的演说家之一。
这个故事告诉我们，一个人的缺陷有时就是上苍给他的成功信息的暗示，一个人的弱点可以成为他一生中最大的激励因素，也可成为你消沉胆怯的借口。当德摩斯梯尺在含小石子时，当他在海边、在洞坑里的时候，心里肯定依旧在想，我要变态！我要超越常人状态，在几十年后，他将会说：“如此的这种的变态，怎么可能不成功？！
爱迪生在发明灯泡过程中，经历了1万多次失败，；可口可乐公司开张第一年反销出了400瓶可口可乐；创立迪士尼乐园的沃乐特迪士尼在报社工作曾以“缺乏创意”被开除；超级球星乔丹曾被所在的中学篮球球队除名；瑞弗。约翰逊，十项全能的冠军，有一只脚先天畸形。
当他们完成了各项伟业的时候，他们一定会说：如此的这种变态，怎么可能不成功？
三分钟演讲稿范文（2）
敬爱的陈老师、亲爱的同学们：
大家好！我今天演讲的题目是《论实干》。
实干，顾名思义，就是实实在在的干，一步一个脚印脚踏实地的干。像老黄兔一样埋下头来做自己事情，就是实干。
如果你想成功，那么你就得实干。实实在在做有用的事情。如果每天喊口号似的，我要做多少题目，要看多少页书，而不付出行动的，那么，我可以肯定告诉你，成功一定不会青睐你。因为你是活在口号中，而不是活在实干中。大家应该都知道王进喜的事迹。在石油要从油井中喷出的紧要关头，如果他不用身体去和水泥，而是站在旁边干着急，结果有会是怎样？众所周知，魏书生先生是一个伟大的教育家。请大家假想一下，假如魏老师做的和说的不一样，结果有会是怎样？肯定的，如果他们不去实干，不付出行动，那么他们就不会成功。
实干，造就了一代代成功人物。在科学技术经济水平不断发展的今天，实干尤为重要。如果不是医务工作者的实干，sas就不会这么快被攻克；如果不是广大人民群众的实干，我们今天的生活就不会这么好。
在我们的学习中也是如此，那些基础知识扎实，平时肯实干的同学，成绩就会好。相反的，那些平时没事做，整天生活在口号当中，一到考试就临时抱佛脚的人，成绩就会差。所以在学习当中，我们一定要实干，多做实事，少喊口好。只有实实在在的做有用的事，知识才会一点点的积累，学识才会一步步的提高。
为了自己理想的实现。为了在高考场上一举夺魁。我们必须从现在起踏踏实实走路。日计划、周计划、月计划，我们要一个个的落实。不能让它们成为一纸空文。当天的学习任务要当天完成，不能推迟。要做到说了算，定了干，一不做，二不休。知识点要一个一个过关。学习是一个持恒的过程。每天的学习，我们不仅要落到实处而且要持之以恒的做下去。这样才会有明显的效果。就像我们写《创新日记》一样。
“实干”二字，说出口容易，写出来也不难，难就难在其意：实实在在的干。而且要不得持之以恒的干，尤其是在学习方面。谁能够持之以恒的踏踏实实的学习，谁就是最后的胜利者。
实干如同一叶船桨，推动着我们不断前行；实干如同一只萤火虫，照亮并指引我们前行的路；实干如同一只信鸽，带着我们梦想飞向远方。
同学们，为了我们的理想，为了我们的班级，为了我们的第一，请投身于实干中去吧。
我的演讲完毕。谢谢大家！
三分钟演讲稿范文（3）
敬爱的老师、亲爱的同学们：
大家好！
如果有人问你：什么是精彩？你会怎样回答？战争年代踊跃参军，八十年代的文学热，还是九十年代的出国热？对，它们都是精彩。每个时代有每个时代的精彩，每个时代也造就了不同的精彩，但无论怎样，精彩总是与青春紧紧相连。
记得走进大学的第一天，辅导员就告诉们，老狼校园民谣里轻松自如的大学生活在这个年代已经一去不复返了。九十年代宣扬的“读书无用论”也早已被热火朝天的“考研”、“考证”热吹得无影无踪。时代已经将新一代的青年推向了社会的最前沿。因此，要寻找属于这一代人的精彩。
为了活得精彩，要拥有目标和信念。目标是心头的一盏明灯，信念是鼓舞你向着目标迈进的力量源泉。目标可能飘渺，路途可能坎坷。然而只要确定一盏明灯，就能让你顺利地泅过危难的海洋！传说中的火凤凰，它迎着太阳飞翔，为的就是将自己的身体点燃，因为只有燃烧才能重生。这多少有一些悲壮。但又确是一幅壮美画面。因为奋斗拼搏的过程无比精彩！
为了活得精彩，必须拥有知识和技能。知识是成功的基础，技能是实现成功的工具。人类步入二十一世纪，世界多极化，信息全球化，知识信息量在以百倍的速度递增。面对这样的现实，昔日象牙塔里轻松自在的场景早已不见，取而代之的是寻找精彩的一双双炽热的目光。社会将竞争的残酷带到了的身边，从而也造就了新一代青年的自强和向上。有一句话说“机遇留给有所准备的人”，那么，年青的朋友们，让早早准备。
为了活得精彩，还要有不断超越的精神。鲁迅先生曾说，“不满是向上的灵魂”。时代的进步使新事物以让人难以置信的速度发展。没什么铁饭碗，没什么保质期。无论什么时候，都必须以起跑线上的姿态去迎接挑战。只有不断地学习和提高，才能跟得上这个精彩的大时代。
永远究竟有多远？没有人知道。只是历史长河中的小小一滴水。然而既是青春的拥有者，就没有理由不为自己喝彩，没有理由不活得精彩！都将老去，但不是为了永远的青春而来，而是为了感受和不同的青春而来。从现在开始，让活得精彩！
谢谢大家！
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