英语手抄报花边1
手抄报教案

校本课程手抄报教案(一)走进手抄报【教学目标】1、通过对手抄报的观察,让学生认识手抄报,了解手抄报。
2、使学生初步感受并形成手抄报构成、手抄报美化等基本知识,学会评价手抄报的基本方法。
3、培养学生的探究能力、审美能力、动手能力以及合作意识等。
【教学重点与难点】重点:认识和了解手抄报。
难点:了解手抄报制作的基本流程。
【教学准备】学生:铅笔、水彩笔、钢笔、直尺、纸张、有关制作的书籍、资料等。
教师:示范手抄报若干分,课件等。
【教学课时】2课时【教学过程】学生四至六人为一个小组,在尊重保护学生自主性的基础上,采取合作与讨论学习的方式,培养动手、动脑、创新等能力。
一、激趣导入出示精美的手抄报(课件),学生欣赏,激发学生创作欲望,看后让学生谈感受。
二、新授(一)介绍手抄报的内容1、手抄报是小学生开展课外活动的形式之一。
每当重大的节日,我们都会以各种各样的形式来表达,或祝愿或庆祝或歌颂,比如迎元旦、迎“六一”、庆“国庆”等。
2、手抄报的内容有:一般来说,一份手抄报应该有一个主题,比如爱国主义教育、法制教育、感恩教育、安全常识、英语知识、环保知识、天文知识、地理知识、自然知识、历史知识等。
(二)介绍手抄报的设计与制作大体上可以从这三个方面来阐述:1、美化与设计的步骤手抄报的美化与设计涉及的范围主要有:版面设计与报头、题花、插图、尾花和花边设计等。
2、版面设计是出好手抄报的重要环节要设计好版面,须注意以下几点:(1)明确本期手抄报的主要内容是什么,选用有一定意义的报头(即报名)。
一般报头应设计在最醒目的位置。
(2)通读所编辑或撰写的文章并计算其字数,根据文章内容及篇幅的长短进行编辑(即排版)。
一般重要文章放在显要位置(即头版)。
(3)要注意长短文章穿插和横排竖排相结合,使版面既工整又生动活泼。
(4)排版还须注意:字的排列以横为主以竖为辅,行距要大于字距,篇与篇之间要有空隙,篇与边之间要有空隙,且与纸的四周要有3cm左右的空边。
三年级英语手抄报图片简单又漂亮

三年级英语手抄报图片简单又漂亮三年级英语手抄报图片简单又漂亮三年级的同学们,下文是有关简单又漂亮英语知识图片,欢迎大家阅读与了解。
pen 钢笔 pencil 铅笔 pencil-case 铅笔盒 ruler 尺子eraser 橡皮 crayon 蜡笔 book 书 bag 书包sharpener 卷笔刀 school 学校head 头 face 脸 nose 鼻子 mouth 嘴 eye眼睛 ear 耳朵arm 胳膊 finger 手指 leg 腿 foot 脚 body 身体red 红色的 yellow 黄色的 green 绿色的 blue 蓝色的purple 紫色的 white 白色的 black 黑色的 orange 橙色的` pink 浅粉色的 brown 棕色的cat 猫 dog 狗 monkey 猴子 panda 熊猫rabbit 兔子 duck 鸭子 pig 猪 bird 鸟bear 熊 elephant 大象 mouse 老鼠 squirrel 松鼠cake 蛋糕 bread 面包 hot dog 热狗 hamburger 汉堡包chicken 鸡肉 tea 茶 French fries榨薯条 Coke 可乐juice 果汁 milk 牛奶 water 水 coffee 咖啡one 一 two 二 three 三 four 四 five 五six 六 seven 七 eight 八 nine 九 ten 十doll 玩具娃娃 boat 小船 ball 球 kite 风筝balloon 气球 car 小汽车 plane 飞机boy 男孩 girl 女孩 teacher 教师 student 学生this 这个 my 我的 friend 朋友I’m=I am 我是nice 好的;愉快的 good morning 早上好 good afternoon 下午好meet 遇见;碰见 goodbye 再见 too 也;太father 父亲;爸爸 dad 爸爸(口语) mother 母亲;妈妈 mom 妈妈(口语)man男人 woman 女人 grandmother (外)祖母 grandma (口语)(外)祖母grandfather (外)祖父 grandpa (口语)(外)祖父 sister 姐妹brother 兄弟let’s=let us 让我们 great 太好了really 真地;确切地 and 和;并且 how 多么;怎么样eleven 十一 twelve 十二 thirteen 十三 fourteen 十四fifteen 十五 sixteen 十六 seventeen 十七 eighteen 十八nieen 十九 twenty 二十 how many 多少 can 能够;可以 look at 看;瞧peach 桃 pear 梨 orange 橙子 watermelon 西瓜apple 苹果 banana 香蕉 strawberry 草莓 grape 葡萄like 喜欢 some 一些;某些 thanks 多谢bus 公共汽车 bike 自行车 taxi 出租车 jeep 吉普车 desk 课桌chair 椅子 walkman 随身听 lamp 台灯 your 你的;你们的zoo 动物园small 小的 big 大的 long 长的 short 短的;矮的tall 高的 giraffe 长颈鹿 deer 鹿。
四年级上册英语手抄报1-6单元

四年级上册英语手抄报1-6单元一、Unit 1 My classroom。
(一)单词。
1. 教室物品类。
- classroom(教室),window(窗户),blackboard(黑板),light(电灯),picture(图画),door(门),teacher's desk(讲台),computer(计算机),fan(风扇),wall(墙壁),floor(地板)。
2. 描述位置的介词。
- in(在……里面),on(在……上面),under(在……下面),near(在……附近)。
(二)重点句型。
1. - What's in the classroom?(教室里有什么?)- One blackboard, one TV, many desks and chairs.(一块黑板、一台电视、许多书桌和椅子。
)2. - Where is it?(它在哪里?)- It's near the window.(它在窗户附近。
)(三)手抄报设计。
1. 标题。
- 用彩色粉笔字体写“Unit 1 My classroom”。
2. 板块划分。
- 单词区:把单词分类写好,用不同颜色的笔标注,比如教室物品类用蓝色,介词类用绿色。
每个单词可以画一个简单的小图标辅助记忆,像window旁边画个小窗户。
- 句型区:把重点句型写出来,用对话气泡的形式呈现,一个气泡里写问句,另一个气泡里写答句。
- 绘画区:画一个教室的内部场景,包括黑板、窗户、桌椅等,并且用箭头指出各个物品的英文单词。
二、Unit 2 My schoolbag。
(一)单词。
1. 学习用品类。
- schoolbag(书包),maths book(数学书),English book(英语书),Chinese book(语文书),storybook(故事书),candy(糖果),notebook(笔记本),toy(玩具),key(钥匙)。
2. 颜色类(用于描述书包等物品的颜色)- red(红色),blue(蓝色),yellow(黄色),green(绿色),white(白色),black(黑色)。
手抄报教案

校本课程手抄报教案(一)走进手抄报【教学目标】1、通过对手抄报的观察,让学生认识手抄报,了解手抄报。
2、使学生初步感受并形成手抄报构成、手抄报美化等基本知识,学会评价手抄报的基本方法。
3、培养学生的探究能力、审美能力、动手能力以及合作意识等。
【教学重点与难点】重点:认识和了解手抄报。
难点:了解手抄报制作的基本流程。
【教学准备】学生:铅笔、水彩笔、钢笔、直尺、纸张、有关制作的书籍、资料等。
教师:示范手抄报若干分,课件等。
【教学课时】2课时【教学过程】学生四至六人为一个小组,在尊重保护学生自主性的基础上,采取合作与讨论学习的方式,培养动手、动脑、创新等能力。
一、激趣导入出示精美的手抄报(课件),学生欣赏,激发学生创作欲望,看后让学生谈感受。
二、新授(一)介绍手抄报的内容1、手抄报是小学生开展课外活动的形式之一。
每当重大的节日,我们都会以各种各样的形式来表达,或祝愿或庆祝或歌颂,比如迎元旦、迎“六一”、庆“国庆”等。
2、手抄报的内容有:一般来说,一份手抄报应该有一个主题,比如爱国主义教育、法制教育、感恩教育、安全常识、英语知识、环保知识、天文知识、地理知识、自然知识、历史知识等。
(二)介绍手抄报的设计与制作大体上可以从这三个方面来阐述:1、美化与设计的步骤手抄报的美化与设计涉及的范围主要有:版面设计与报头、题花、插图、尾花和花边设计等。
2、版面设计是出好手抄报的重要环节要设计好版面,须注意以下几点:(1)明确本期手抄报的主要内容是什么,选用有一定意义的报头(即报名)。
一般报头应设计在最醒目的位置。
(2)通读所编辑或撰写的文章并计算其字数,根据文章内容及篇幅的长短进行编辑(即排版)。
一般重要文章放在显要位置(即头版)。
(3)要注意长短文章穿插和横排竖排相结合,使版面既工整又生动活泼。
(4)排版还须注意:字的排列以横为主以竖为辅,行距要大于字距,篇与篇之间要有空隙,篇与边之间要有空隙,且与纸的四周要有3cm左右的空边。
【作文】美丽的花边

美丽的花边
分类: 作文 > 美丽的花边
版权所有:碧意之时 创作时间:来源:
1、黑板报花边:可爱的花边 黑板报花边:可爱的花边 我们都知道每个人的品位都是不一样的哦 黑板报花边:可爱的花边 要注意色彩的整体效果,应既有调和又有对比,才能产生良好的总体色彩效果,使感到美的力量,既统一调和,又要对比变化,是正确处理好色彩对立统一辩证关系的原则。黑板报花边:可爱的花边 尾花是一个单独的花纹图样,内容可画花卉、风景、建筑等.尾花要求结构简练、装饰性强,其幅面大小不能超过报头、插图。小朋友们,你们在制作黑板报的时候都用什么样的尾花图案呢?一起来看看吧。黑板报花边:可爱的花边 文章标题是按文章内容以简练明了、提纲挈领的方式,引导读者进入正文阅读。在黑板报中文章与标题的组合方式是围绕版面编排和美化装饰形式来穿插定位的。2、关于黑板报花边:花边 关于黑板报花边:花边 好看的手抄报花边可以为自己的手抄报增色不少,可是如果你赶时间的话,复杂的花边要想画的好看基本是不可能的,所以要选择简单有好看又大方的手抄报花边,现编今天给大家带来的就是时简单又有创意的手抄报花边下面我们就一起来欣赏下手抄报花边吧。
当然,有特殊要求的版面不在其列。3、黑板报花边:框框花边 黑板报花边:框框花边 小朋友们,放暑假了,大家在这个炎热的夏季有什么好的打算,有没有出去游玩或者见到了一些值得记下来的事情呢,那么就来挑选一款适合你出题的黑板报花边来出一期属于自己的黑板报吧。小编今天推荐的花边非常的鲜艳好看,要是画的传神的话那就更好了。下面我们就一起来欣赏下吧。黑板报花边:框框花边 小朋友们,看看小编为大家推荐的这幅黑板报花边吧,里面的是古典类型的花边图案哦,看上去感觉非常的不错吧,这样的花边应该是有很多人都是很喜欢的,不过这样的花边在中国出现的更多一点哦,下面就让我们一起来欣赏一下吧。
三年级英语小报简单又漂亮

三年级英语小报简单又漂亮引言:小报是一种用纸质形式刊载新闻、教育和娱乐内容的简化媒介。
在教育领域,小报可以极大地激发学生的学习兴趣和动力。
特别是在英语学习方面,利用小报可以帮助三年级学生更好地掌握基础的英语知识。
本篇文档将介绍如何制作一份简单又漂亮的三年级英语小报。
一、选择适合三年级学生的主题制作一份成功的英语小报,首先要选择适合三年级学生的主题。
可以选择一些简单又有趣的主题,例如动物、食物、颜色、数字等。
这样的主题可以让学生在记忆和学习英语的过程中更加轻松愉快。
二、设计小报的版面小报的版面设计可以通过几个简单的步骤实现。
首先,确定小报的大小和页面布局。
一般来说,A4纸是一个比较合适的选择。
然后,将页面分为几个不同的栏目,例如标题栏、文章栏、图片栏等。
每个栏目都应该有相应的标题和内容。
三、编写简单易懂的文章在制作三年级英语小报时,文章要求简单易懂,语言流畅。
可以选择一些基础的英语词汇和句子,让学生能够理解和运用。
例如,在动物主题的文章中,可以介绍一些常见的动物,如狗、猫、鸟等。
使用简单的句子描述它们的外貌和特点。
四、插入生动形象的插图虽然这份小报不需要带图片,但可以引导学生自己绘制一些简单的插图。
这些插图可以在小报的图片栏中展示,让小报更加生动形象。
例如,在食物主题的文章中,学生可以绘制一些常见的食物,如水果、蔬菜等。
五、加入趣味性的活动与游戏为了增加小报的趣味性,可以加入一些活动与游戏。
例如,在每一期的小报中设置一个猜谜游戏,通过图片或文字描述一个动物或物品,学生猜猜是什么。
这样的活动不仅可以巩固学生的英语知识,还能提高他们的思维能力和判断力。
六、定期发布与分享制作一份漂亮的三年级英语小报需要一定的时间和精力。
在制作完成后,可以选择定期发布和分享给同学和老师。
可以将小报挂在教室的墙壁上,以供其他同学欣赏和学习。
此外,还可以请同学们轮流进行小报的口头介绍,以提高他们的口语表达能力。
结论:通过制作一份简单又漂亮的三年级英语小报,学生不仅可以巩固和运用已学的英语知识,还可以培养学生的观察力、思维能力和创造力。
三年级英语小报内容
三年级英语小报内容一、字母板块。
1. 字母书写。
- 大写字母:A像一座尖塔,B像两个肚子连一起的半圆,C像弯弯的月亮等等。
每个大写字母都有独特的形状,我们要按照正确的笔画顺序书写。
例如,A的书写顺序是先写一横,再写斜着的两笔。
- 小写字母:a像个小圆圈加个小尾巴,b是一个竖和一个半圆,c就像个小半圆。
小写字母在四线三格中有不同的占位,像a, c, e等占中间一格,b, d, h等占上中两格。
2. 字母歌谣。
- A - B - C, D - E - F, G - H - I, J - K - L, M - N - O, P - Q - R, S - T - U, V - W - X, Y - Z. Now you see, I can say my A - B - C.二、单词板块。
1. 动物单词。
- cat(猫):Cats are very cute. They like to play with balls. They have soft fur and sharp claws.- dog(狗):Dogs are our good friends. They can guard our houses. They bark when they see strangers.- duck(鸭子):Ducks can swim in the pond. They have flat beaks and webbed feet.2. 颜色单词。
- red(红色):We can see red apples, red roses. Red is a very bright color.- blue(蓝色):The sky is blue, and the sea is also blue. Blue makes us feel calm.- green(绿色):Trees are green. Green represents nature.三、句子板块。
四年级下册英语手抄报_英语手抄报活动方案
英语手抄报活动方案一、活动目的:提高学生学习英语的兴趣,丰富学生的课余生活,扩大学生的英语文化知识,让学生通过收集资料,动手设计制作手抄报,发挥自己的想象力和创造力,学会用英语做事情,使英语学习变得更有乐趣。
二、活动时间:2012.4==2012.6三、活动原则:学生以班级为单位自愿参加。
每份手抄报由1~4位同班级同学创作,可按主编、文章手写、资料收集、美工等分工。
四、活动主题:“庆祝“六一”儿童节”进行创作,版式与内容自定。
五、负责人:张晓曼陈晖协助人员:初一、初二英语组组员六、参加对象:初一、初二全体学生七、参赛要求:1、内容要求:手抄报主题要鲜明,可设计成专题的文摘报,也可设计成综合文化报等形式。
文章应短小精悍,生动活泼,单篇文章字数一般不宜超过300字。
可自行采访撰写,亦可根据资料改编、缩写,学生自撰文章要至少一篇。
2、版面设计要求:大小规格为4开,单面制作。
版面应符合报纸的基本要求:①有醒目的报头,②有虚拟刊号、出版单位或出版人、出版日期。
③有版块、栏目划分。
④有文章标题。
⑤有插图、花边。
排版要求:①主题文章要放在头版头条的位置,做到主次分明。
②版面整洁、美观、大方,标题突出,内容丰富,图文并茂,字型字号有变化,疏密相宜,给人以赏心悦目的感觉。
③版面设计均采用手抄文字和手绘插图,版面制作不允许任何剪贴。
④手抄报文章总篇数不少于5篇稿,插图要求3幅以上。
3、活动方式:各班级评比的基础上推荐出1~2份优秀作品参加学校的评比活动4.截稿日期:于2012年5月30日前八、奖励办法:由初一、初二全体英语教师对所有学生的作品进行评选,评出一等奖,二等奖,三等奖若干。
洪都中学英语组2012.4.。
英语小报模板竖版
英语小报模板竖版
(实用版)
目录
1.英语小报的概述
2.英语小报的模板
3.英语小报的竖版设计
4.英语小报的实际应用
正文
英语小报是一种以英语为主要内容,以纸质媒介为主要形式的出版物。
它既可以是学校里的教学辅助工具,也可以是企业或机构的宣传资料。
英语小报通常包括文章、图片、广告等内容,其模板设计一般包括报头、目录、文章、图片、广告等板块。
英语小报的模板设计有多种,其中一种常见的模板设计是竖版设计。
竖版设计是指报纸的排版方式是按照垂直方向进行排列,即报纸的每一行文字是从左到右,而不是从上到下。
这种设计方式不仅能够使报纸看起来更加美观,而且也能够提高阅读效率。
英语小报的竖版设计需要考虑多个因素,包括报纸的版面大小、文章的长度、图片的大小和位置等。
在设计过程中,需要将这些因素进行综合考虑,以确保报纸的整体效果。
英语小报的实际应用非常广泛。
在学校里,英语小报可以作为教学辅助工具,帮助学生提高英语阅读能力。
在企业或机构中,英语小报可以作为宣传资料,向外界展示企业和机构的形象和实力。
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小学生英语4开纸手抄报模板素材
小学生英语4开纸手抄报模板素材篇一:小学生英语小报模版篇二:中小学手抄报模板卡通手抄报模板素材万能手抄报模板篇三:英语手抄报素材 2012级“编写手抄报”实践活动计划具体要求: 1、以小组为单位编写一份8开8版的英文手抄报。
2、Front page在整版纸的右上方;必须有刊头,刊头下写明Exhibition of Practice Course (Dec., 2008 –Jan., 2009) by Team *, Class **, School of Foreign Studies, Hunan University of Science Technology;刊名自拟,还可自创标志。
3、选编内容和自创内容各占一半,题材健康,图片、花边等不超过版面的三分之一。
自创内容(文章末尾用by ***,并在标题处一标志表明凡带有此标志的文章属自创作品)与编选内容(文章末尾用from ***)各半;每个版面一个主题,各栏目都应围绕主题。
4、在报纸的合适位置写明Consultative Committee: Faculty of Major (1), School of Foreign Studies, Hunan University of Science Technology; Supervisor: ***; Editor-in-chief: ***; Editor:***; Designer: ***; Members: ***,***。
A1 I see the bread-winner still working hard under the fervent sun, soaking with sweat. I see mothers and wives devoting themselves fully on the domestic chores, waiting her husband and child back home. I see the children playing on the school ground, enjoying themselves totally in the care-free world with naive smile on their face. But I also see the concrete gigantic buildings collapsing in the twinkle of eyes, only hearing the slam bang and seeing the floating ashes on the sky. I see the men crying for their wives and children desperately towards the ruins. I also see a large crowds lying on the ground, which is floating with flood. The above are the images I can imagine before and after the earthquake about Wenchuang earthquake in 2008.Actually,our China takes place more and morenatural disasters in recent years, such as mudslide, drought, earthquake, floods and so on, through which many people suffer a lot, both in material and in spirit aspects. So we should think the urgent problem: why our China suffers more and more natural disasters in recent years? Excessive deforestation,grazing and exploiting resources inordinately may be the reasons, for many of us hold the conception that the natural resources is endless and human beings control the nature. And the facts evidence that they are woefully mistaken, for nature begins revenging on the enemies-our human beings through his own ways. Therefore, we should seat down and think patiently and calmly how to deal with this urgent situation, otherwise, we would be responsible for the consequences one day for what we have done to the nature.(By Chen Huanya) A2 B1 Protecting Nature(保护自然)China has a very long and brilliant history, whose people are so friendly and hospitable. But I am wondering why some people pay such little attention to the environment and nature. In many places of the countryside, rivers have become stinking sewers and brooks have disappeared. Heaps of garbage obstructs the scarce flow of dirty water. The grounds are littered with plastic bottles and bags. People are cutting down trees even though it is illegal. In some towns, rubbish is hidden behind walls. Garbage cans are often of little use, making cleaners must rush all day long and also by night to clean the rubbish. To make things worse, as a result of modernization, pollution is a serious problem. Nowadays we often breathe the dusty air and drink the dirty water. What s more, we always suffer from the noise and the heavy light pollution. I m really tired of this life. I want to change it. If I have a chance, I will get up early to see the suise, in order to embrace our nature. As far as I m concerned, our nature is our mother. She offers us everything we want or need. If our nature disappears, human-beings will be in great danger. Therefore, we must love our nature unconditionally. Don t always ask too much from her but return her nothing. Moreover, as her sons and daughters, we should always appreciate for her bounty. (By Yin Kemin) B2 An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth s crust that creates seismic waves. The seismicity,seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. At the Earth s surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity. In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans —that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake s point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter. (From Wikipedia ) B3 Extratropical Cyclones(温带气旋) Extratropical cyclones, sometimes called mid-latitude cyclones, are a group of cyclones defined as synoptic scale low pressure weather systems that occur in the middle latitudes of the Earth (outside the tropics) not having tropical characteristics, and are connected with fronts and horizontal gradients in temperature and dewpoint otherwise known as baroclinic zones . As with tropical cyclones, they are known by different names in different regions. The most intense extratropical cyclones cause widespread disruption and damage to society.. Heat waves(热季狂潮) A heat wave is a period of unusually and excessively hot weather. The worst heat wave in recent history was the European Heat Wave of 2003. A summer heat wave in Victoria, Australia, created conditions which fuelled the massive bushfires in 2009. Melbourne experie nced three days in a row of temperatures exceeding 40°C (104°F) with some regional areas sweltering through much higher temperatures. The bushfires, collectively known as Black Saturday , were partly the act of arsonists.Heat waves can occur in the ocean as well as on land withsignificant effects (often on a large scale). (From Wikipedia ) B4 Nature, in the broadest sense, is equivalent to the natural, physical, or material world or universe. Nature refers to the phenomena of the physical world, and also to life in general. It ranges in scale from the subatomic to the cosmic. Nature may refer to the general realm of various types of living plants and animals, and in some cases to the processes associated with inanimate objects – the way that particular types of things exist and change of their own accord, such as the weather and geology of the Earth, and the matter and energy of which all these things are composed. It is often taken to mean the natural environment or wilderness–wild animals, rocks, forest, beaches, and in general those things that have not been substantially altered by human intervention, or which persist despite human intervention. C1 Previously, I lived in the countryside where the sun always rose. Every morning, I got up early to see the suise. As the sun came out, trees, flowers, birds and other animals woke up from their long sleep and smiled gently towards the sun. “What a glorious view!” I whispered. But a s I moved to the city, I could hardly see such a glorious view now. Nowadays, to make things worse, as a result of modernization, pollution is a serious problem. Nowadays we often breathe the dusty air and drink the dirty water. People quite a lot of harm to the nature in order to gain their own profit. As a result, we are gradually receiving the earth’s punishment. Now we are lacking of energy and facing environment problem. If I have a chance, I will get up early to see the suise, in order to embrace our nature. I eagerly want to return to our nature. The nature, serves as the same role as water, giving us every indispensable thing that we need. Things like the beautiful sunshine, fresh air, and other abundant resources. We’re unable to survive without these. And there’s no need to be reminded that we must learn to live with the nature peacefully and harmoniously. The fact,however, usually turns out to be exact the opposite side. As we can see with our naked eyes, the air, the earth and the water have all been polluted because of the rapid but irregular development of industries. So here comes the question: are we still going to live in a world like this? Of course not. Nature is something irreversible, which deserves our every effort to make friends with. Therefore, we protect it while we use it, or on the dark side, we lose it.(By Liu Yan) C2 Rainbow彩虹 A rainbow is an optical and meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicolored arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. In a primary rainbow , the arc shows red on the outer part and violet on the inner side. This rainbow is caused by light being refracted (bent) when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it. In a double rainbow, a second arc is seen outside the primary arc, and has the order of its colors reversed, red facing toward the other one in both rainbows. This second rainbow is caused by light reflecting twice inside water droplets. Thunder Thunder is the sound caused by lightning. Depending on the distance and nature of the lightning, thunder can range from a sharp, loud crack to a long, low rumble (brontide). The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave, similar to a sonic boom, which produces the sound of thunder, often referred to as a clap, crack, or peal of thunder. The distance of the lightning can be calculated by the listener based on the time interval from when the lightning is seen to when the sound is heard.The cause of thunder has been the subject of centuries of speculation and scientific inquiry. The first recordedtheory is attributed to the Greek philosopher Aristotle in the third century BC, and an early speculation was that it was caused by the collision of clouds. Subsequently, numerous other theories were proposed. By the mid-19th century, the accepted theory was that lightning produced a vacuum. (From Wikipedia ) C2。