准备工作做好了，我就要开始做实验了。首先，我把米倒满玻璃杯，并用一只手将杯子里的米压一压，紧接着从几根手指之间的缝隙中插入准备好的一根竹筷子，并再一次用手压紧米粒，使米粒、杯子和筷子紧紧地挤在一起，最后，我用手轻轻提起筷子，奇迹出现了——米粒连同玻璃杯一起被筷子给提了起来。那为什么仅凭一根筷子就能提起一个装满米的玻璃杯呢？这究竟是怎么一回事呢？原来，物体和物体之间有摩擦力，当物体受力要运动时，摩擦力就会以相反方向阻碍物体的运动。在实验中，由于杯子内米粒与筷子之间的挤压，使杯子、筷子和米粒之间的摩擦力增大，将筷子向上提起，米粒和杯子由于摩擦力的作用阻碍筷子向上运动，结果反而将米粒和杯子一起给提了起来。

怎么样？这个实验有趣吧？其实，在我们的生活中还有无数的科学问题等待我们去探索，去解答。只要我们拥有一颗勇于探索的心，就一定能探索到问题其中的奥秘！

云生活演讲稿篇2

亲爱的老师、同学们：

随着一丝清凉的秋风，暑假和夏天一起悄然逝去。这个假期，这个夏天，对我来说是快乐的，是丰富多彩的。每一天都不无聊，都很快乐，最快乐的莫过于开学期的最后一个星期天了。

那天早上十点，我和哥哥跟小姨奶奶一起去西部欢乐园游玩。进去买了两张成人套票（所含项目可无限次游玩）后，我和哥哥迫不及待地张望着：“先玩什么呢？”

哥哥的目光锁定在“狂呼”上面——“狂呼”是欢乐园中的一个游乐设施。好像一个两头安了车厢的螺旋桨。在它启动时，“螺旋桨”会旋转，同时小车厢也会翻滚，十分可怕——天啊！我倒吸一口冷气，大喊：“我不坐！”可是哥哥不管我怎样大喊大叫，还是把我拖了上去。直到工作人员为我扣好安全带后，我还在徒劳地嘟哝：“不要嘛。”唉，楼梯撤走了，想下去也不行了。机器启动了。完了，这肯定是一番折磨啊，我绝望地想。“狂呼”开始翻滚，一会儿上一会儿下，十分恐怖。我旁边的一个大哥哥甚至极端地大叫：“妈妈，我要回家！”我也尖叫起来，倒是哥哥十分冷静地看着我们俩胡喊乱叫。机器总算停下了。我走下去时又觉得这似乎并没有那么可怕。

我和哥哥又玩了碰碰车、梦幻世界、丛林飞车等项目。中午我们只吃了点面包，就被哥哥拉到了过山车那里。我不敢坐，于是坐在长椅上看着哥哥大步流星地走了上去。

几十秒后，哥哥走了下了。他脸不红心不跳，只是耳朵红得厉害。他说：“一点也不可怕，闭上眼睛，什么感觉也没有。只是耳朵撞到护栏上有些痛。”我坐在长椅上，十分纠结。试一试吧……不，你看他们叫得多厉害……闭上眼睛什么也没有……万一他哄我呢？……试试吧，没事的……“试试不？”哥哥打断了我头脑中的争吵。

我迟疑了一下，咬咬牙：“那就……试试吧。”哥哥帮我占了个第一排的位置——他说第一排不可怕——我系上安全带，摘下眼镜，闭上眼睛，抓好护栏。“叮铃铃——”要开始了。过山车开始爬坡，我的心也越悬越高——开始加速了，随着后排的人的尖叫声，我的耳朵撞在了护栏上。“哦！”突然，车停了。“什么？就这么点？”我开始为最早的害怕感到可笑。

这之后十分轻松。我们爱玩什么玩什么，玩热了就来一次“激流勇进”冲冲凉。一直到下午六点，我们才跟小姨奶奶一起吃晚饭，回到小姨奶奶家。

那一天，我不仅玩得十分开心，还明白了：“只要有尝试的胆量，一切都很容易。”

除了那一天，快乐的日子还有很多很多，都深刻地留在我的脑海。我知道，快乐还会继续，还会更多，还会更难忘。

云生活演讲稿篇3

have been in university for about one year. during my stay here, i came to realize that university life is like drinking coke. we experience all tastes of life here, sour, sweet, bitter and hot.

i am from province, which is far away from here. i often miss my mum, friends, and relatives in my hometown. however, i can't see them very often. so loneliness always keeps me company. i am sad that i can't be there with them.

lucky for me, life in university is rich and colorful. with more free time,we can do many more things besides study, such as joining societies clubs, and taking part-time jobs. such activities not only make our life more colorful, but also help us improve all kinds of skills. the university is a society miniature, what we learn here will benefit our future life.

our path in life will not always be smooth. setbacks can't be avoided. failing an important exam, break up with boy or girl friend, or refused by a promising company, such setbacks are likely to get us down. sometimes we fell so frustrated that we even burst into tears.

drinkin coke is wonderful, despite the undesirble consequent hiccups. it's bitter, sour and peppery, but also sweet. and you'll even feel excited after gulping down a glass. a college experience is part of growing up. we cry, smile, fall in love, get hurt, leave, learn and then we become a better person.

university life is like drinking coke. i'm experiencing it. and i know, i enjoy it!

云生活演讲稿篇4

hello everyone.today i'm glad to be here to give a speech about my fresh experience in china agriculture university.

first i must say the campus life is really different from what i have experienced in high school.for instancei used to lean upon my dormitory teacher to wake me up on time.but now i have to set several alarm clocks to make myself could hear them in the morning otherwise i would miss my class.and then even worse there would be nobody remind me

except my teacher!so the differences are everywhere and i could easily find them.the change of life is great and it's wonderful:i have more time of my own and the rights to decide how i live.

my campus activities are rich and colorful.learning english has become a habit to me cause i plan to study abroad in next few years.playing guzheng is my favorite activity.i have kept on practising it since i was a little girl and i wish to win more competitions in my campus life.

our university has the first level equipments and the most experienced teachersalso has the best students(laugh).i consider it to be a honor that i've got a chance to study here and i sincerely hope that we could live wonderful lives in our campus!

大家好，今天我很高兴能在这里给我一个关于中国农业大学的新经验的演讲。

首先我得说校园生活真的不同于我在高中时的经历，比如说，我曾经依靠我的宿舍老师来叫醒我，但现在我必须设置几个闹钟来让我自己能听到他们的声音，否则我会想念我的课。

除了我的老师!所以这些差异是无处不在的，我可以很容易地找到他们，生活的变化是伟大的，它的精彩：我有更多的时间和权利来决定我如何生活。

我的校园活动是丰富多彩的。学习英语已经成为我的习惯，因为我计划在未来几年留学。古筝是我最喜欢的活动。我一直在练习的时候，我还是个小女孩的时候，我希望能在我的校园生活赢得了更多的比赛。

我们的大学有第一级的设备和最有经验的教师，也有最好的学生(笑)。我认为这是一种荣誉，我有机会在这里学习，我真诚地希望我们能在我们的校园里活得精彩!

云生活演讲稿篇5

good morning ,boys and girl,i`m jenny peng ,today my topic is :talk about a meaningful way we can use time.at first , let me ask you a question : what do you do in your spare time ,especially in your holiday ? do you just stay at home ,watching tv,eating,and sleeping?maybe you`ll feel relax at the first time ,but if we always do like this,you`ll feel much boring. so ,the meaningful way i`m going to introduce to you is taking part-time-job in your vacation.

yes ,you are right , the meaningful way of using time i`m going to introduce to you is taking part-time-job in your vacation.besides,the location we going to work is not in your hometown,in another words,it`s a completely strange situation . maybe you feel amazy and crazy when hearing it , but i think you can learn a lot from it . first , you can learn how to be a good worker : familiar with the work schedule , obey the rules and make friends with others . besides , learn how to promote yourself . company is a relatively open socialty , it need you to show yourself in front of others , and it will help you to find a good job in the future.

after the part-time-job , we`ll more cherish our time , and find out that how happy and freedom to being a student . we`ll work hard on our study , finish our homework efficiently and struggle for our dream . as the saying going that ：yesterday is history , tomorrow is mystery , but today is a gift . let`s cherish and make full use of every minutes of our life , and believe that what we did will make sense .

thank you.

life is never just being. it is a becoming, a relentless flow. our parents live on through us, and we will live on through our children. the institutions we build endure, and we will endure through them. the beauty we fashion cannot be dimmed by death. our flesh may perish, our hands will wither, but that which they create in beauty and goodness and truth lives on for all time to come.

donsquo;t spend and waste your lives accumulating objects that will only turn to dust and ashes. pursue not so much the material as the ideal, for ideals alone invest life with meaning and are of enduring worth.

add love to a house and you have a home. add righteousness to a city and you have a community. add truth to a pile of red bricks and you have a school. add religion to the humblest of edifices and you have a sanctuary. add justice, to the far-flung round of human endeavors and you have civilization. put them all together, exalt them above their present imperfections, add to them the vision of humankind redeemed, forever free of need and strife and you have a future lighted with the radiant colors of hope.

云生活演讲稿篇6

good afternoon， my dear friends.

i am very happy to meet you is my great honor to communicate with you at such a special t of all，please allow me to express my appreciation to you all to listion to me.

i am proud of being a college collegelife is fresh，new teachers， new classmates and new friends. i like the friendship， and their wide knowledge and opening mind. the grand library， school buildings and wide playground attrattde me very college life is better than i expected， i can do anything i like. in the college we can not only learn the professional knowledge，but also develop our comprehensive we can make full use of the period，we can learn many useful des，we should have the active attitude to our life，do a contributionto the egelife is the most precious time in our of us want to become an outstanding man. but there are some students still waste their time. they get together for eating， drinking or playing cards. they're busy in searching for a girlfriend or a boyfriend. they completely forget their task as college students.

finally， i hope everybody can try their best to become a worthy person to our country， and make great contributions to the society! 下午好，我亲爱的朋友们。我很高兴在这里遇到你。这是我的杰出的阁下在这样一个特殊的场合与你交流。首先，请允许我表达我的感激你们都要听我的。我感到自豪的是一个大学生。大学生活是新鲜的，新的老师，新的同学，新的朋友。我喜欢的友谊，和他们的广泛知识和开放的思想。宏伟的图书馆，教学楼和宽阔的操场attrattde我非常感谢。我的大学生活比我预料的好，我可以做任何我想做的事。在大学里我们不仅可以学到专业知识，也培养我们的综合能力。如果我们能充分利用时间，我们可以学到很多有用的东西。此外，我们应该对我们的生活产生积极的态度，做一个对社会的贡献。大学生活是人生中最宝贵的时间。我们大多数人都想成为一个优秀的男人。但也有一些学生还浪费时间。他们聚在一起吃，喝或玩卡。他们正忙着寻找女朋友或男朋友。他们完全忘记了自己作为大学生的任务。最后，我希望每个人都能尽最大努力成为一个有价值的人，为社会做出巨大的贡献!

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云生活演讲稿6篇