——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?
Dear Mr.
Please accept my resignation as associate chemist at the GERT Institute. I plan to leave my job here on September 30, 19–, taking a few days of annual leave just prior to that effective date. As you know, my primary interest has been in the oil and gas industry. Therefore, I’ve accepted a position with Fury Refining, Inc., that should put me back in touch with my “first love.” Although I’m eager to accept the challenges in this new position, I regret leaving the institute. You and the organization as a whole have treated me very well over the past three years. I won’t forget the friendship and professional growth I’ve experienced as an employee here. Best wishes to all of you for years of expansion here.
Sincerely,
My favourite swimmer is Sun Yang.He swims very fast.He took part in the last Olympic Games.He is my hero.
He is 21 years oid.He is very tall.He is 198cm tall.He is cute.I love him.
He is good at swingming very much, He has had all-round success in his study olypic games.
在我家,我有自己的房间,我的`房间是我私人的地方,我不用去听父母的唠叨。我喜欢在饭后呆在房间里,我会保持安静,在没有收到别人干扰的情况下去思考问题。我的房间可以让我感到安全,给予我空间去思考。我喜欢我的房间,我想要有一天去装饰下,让它看起来更加的舒适。
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:
读后感的概念有两重含义:一是真实的、不受任何约束的读后感,二是一种作文的体裁,时要接受各种条件的约束。初中语文课本第一册163页的例文《说胆》以及下面这篇读后感,就接近于第一种读后感。写这种读后感,主要是给自己看的,一定要真实,有什么感想(当然感想应当有意义,值得一写)就写什么感想,与心得笔记不同,它要展开来写,尽量像一篇文章,尽量写得生动、实在、深刻。一般应当写清楚读了什么,有什么感想,联想到了什么,对自己有什么作用等。它不追求文体、格式框框,写起来也可长可短。
I have a great mother. She cares much about me in my life and study.
In the morning, she gets up early to make breakfast for me. When I was little, she prepared my schoolbag. But now, she tells me to do it by myself. Because she thinks I have been old enough to do it. Besides, she always checks my homework. When I finish my homework, she checks it and points out the mistakes. She is very careful and helps me a lot.
I love my mother.
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