——读《金冠的秘密》有感
前几天,我读了一则故事。其内容是,古希腊的一位科学家叫阿基米徳,他在一次洗澡时发现了水的浮力原理。据此,他解开了金冠的秘密。原理是:拿两只大小都相等的罐子,把金冠和一个与它同样重的金块,分别放入装满水的罐子里。水从罐子溢出时,用两个盘子接着,再把两盘水称一下。若放金冠的罐子溢出的水多,说明金冠不是纯金的。这个故事给我的启示是:处处留心皆学问。
世界上的万事万物,都有它自身存在和运行的规律。这些规律有许多我们并不知道。要认识世界,掌握规律,学到知识,就要去留心观察。如果不留心,知识永远不会自动跑到我们的头脑中来。有一次,我家的窗户上结了冰。爸爸问我是怎么回事。我随口说道:“不就是热胀冷缩嘛!”爸爸告诉我要注意观察。经过一次次的观察思考,我才发现了其中的秘密。原来,暧空气遇到冷玻璃形成了水珠,晚上气温下降就结了冰。
我们许多人都洗过澡,为什么阿基米德洗澡的时候,就知道怎么解开金冠的迷呢?阿基米德并不比我们多长一个脑袋,也不多长一只胳膊。他发现水的浮力,是因为他留心观察,才得出结论。如果不留心,他洗一万次澡也不会知道什么是水的浮力。有的同学可能会说:“书本上学到的知识我们没有留心观察,不也掌握了,你说的处处留心皆学问不全对。”其实,书本上的知识也是前人留心观察的结果。就说我们学的地球引力吧,它就是牛顿留心观察发现的。有一次,牛顿坐在苹果树下看书,一只苹果掉在了他的头上,他想为什么苹果不往上掉呢?他留心了这个问题,才知道了地球的引力。
没有一项发明是睡觉睡出来的。我想:一个人只要勤于观察、 勤于思考、勤于试验,不怕失败,就一定能取得成功。
写这种没有约束的“自由”的读后感,不少人比写的读后感要生动、实在,原因就在于“自由”二字,如果你在考试作文时,也保持这种轻松自由的心态,恐怕写出来的作文要多得不少分。仅从这一点分析,经常写一些“自由”的读后感,是不是可以减少你在考试时的紧张的不正常的心理压力,使作文写得更好呢?
Beijing time, in the early morning of August 5th, Sun Yang defend title successfully with the score of 14 points 41 seconds 15 in 2013 swimming world championships men's 1500 meter freestyle finals. This is the third gold medal in this tournament for Sun Yang as well as the fifth goal of China’s swimming, which is slower 10 second 13 than the result of the London Olympic Games when Sun Yang achieves the champion. Sun Yang uses the score of his fifth goal in his career life to tie with the medal record that Luo Xuejuan keeps in the Chinese swimmer World Championship. He also becomes the person after Hackett in the 2005 Montreal World Championships and a single tournament winning the gold medal of “the king of long distance " in men’s 400, 800 and 1500 meter freestyle.
北京时间8月5日凌晨,2013年游泳世锦赛男子1500米自由泳决赛,孙杨以14分41秒15的成绩赢得金牌成功卫冕,这是孙杨本届赛事第三枚金牌,也是中国泳军收获的第五金,这一成绩比伦敦奥运会夺冠时慢了10秒13。 孙杨也以生涯五枚金牌的成绩,追平罗雪娟保持的中国游泳选手世锦赛夺金纪录,并且成为继哈克特在2005年蒙特利尔世锦赛后,又一位单届赛事包揽男子400、800和1500米自由泳金牌的“中长距离之王”!
My mother
My mother is very kind and beautiful although she is not tall.She is 42 years old this year.She is a nurse,so she is always very busy day and night.But she loves her job,and she often takes care of her patients.Of course,she also likes singing,dancing,cooking and shopping,but she almost no time to do them.
Oh,I love my mother.
描写妈妈的英语作文:
Dear Sir/Madam:
As a teacher at xxxx school, I am writing to provide you a recommendation for Miss/Mr.xx so as to help you assess her/his application for acceptance into your program and consideration for financial aid.
Considered a promising student with originality and sophistication in her/his thinking, (she/he was asked, in the spring semester of 2008, to develop a subsystem of a DBMS project for her B.S.thesis, for which I was the chief leader. T
his subsystem was designed to manage the information of materials in NO.1 Foundry Plant of Dongfeng Auto Works.To do the job, she/he read many books about software engineering and took some courses in Database Principles and Management. Keenly aware that the design of a DBMS decides the quality of the whole software system, she did her/his utmost from the beginning of the project.(参加过什么活动. From analyzing users requirements to designing the whole system, from the detailed designing to the final programming, she was very level-headed and full of innovation every step of the way. Taking full advantage of her ability and creativity, she firmly focused herself on her objective and gnored all distractions. She successfully reached her goal. In the final software testing, only a few bugs were found in her subsystem. My appreciation of her talelent was thus confirmed.Miss is a very personable woman, friendly and helpful, and she has always been a team player in her work.
I would greatly appreciate it if you could give her application for candidacy to your Ph.D. program favorable consideration. Should you need any further information in your deliberation, please do not hesitate to contact me.
Sincerely xxxx
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