语文英语数学的英语

一、高中数学诱导公式全集：

常用的诱导公式有以下几组： 公式一：

设α为任意角，终边相同的角的同一三角函数的值相等： sin（2kπ＋α）＝sinα （k∈Z） cos（2kπ＋α）＝cosα （k∈Z） tan（2kπ＋α）＝tanα （k∈Z） cot（2kπ＋α）＝cotα （k∈Z） 公式二：

设α为任意角，π+α的三角函数值与α的三角函数值之间的关系： sin（π＋α）＝－sinα

cos（π＋α）＝－cosα tan（π＋α）＝tanα cot（π＋α）＝cotα 公式三：

任意角α与 -α的三角函数值之间的关系： sin（－α）＝－sinα cos（－α）＝cosα tan（－α）＝－tanα cot（－α）＝－cotα

公式四：

利用公式二和公式三可以得到π-α与α的三角函数值之间的关系： sin（π－α）＝sinα cos（π－α）＝－cosα tan（π－α）＝－tanα cot（π－α）＝－cotα 公式五：

利用公式一和公式三可以得到2π-α与α的三角函数值之间的关系： s

感恩

开头：落叶在空中盘旋，谱写着一曲感恩的乐章，那是大树对滋养它大地的感恩；白云在蔚蓝的天空中飘荡，绘画着那一幅幅感人的画面，那是白云对哺育它的蓝天的感恩。

结尾：因为感恩才会有这个多彩的社会，因为感恩才会有真挚的友情，因为感恩才让我们懂得了生命的真谛。学会感恩，因为这会使世界更美好，使生活更加充实。

谅解（宽容）

开头：谅解如一杯清茶，冲淡彼此之间的误会；谅解像一缕春风，吹化人间隔膜的冰层；谅解像一只寒梅，预示心灵来春的温情；谅解是一架彩虹，让就不相逢的情感放射光彩。

结尾：把握谅解，社会便会进步；把握谅解，人类便拥有财富。 理解

开头：理解，是友谊的结晶；理解，是从信任中开出的鲜花；理解，是人与人之间关爱的光环。它能让误会变成点缀美丽的小瑕疵，在社会中，人们相互的理解，能使这个大家共有的家园更加繁荣、安定。

结尾：相信总有一天误会能变成一朵美丽的花，因为它由理解来浇灌！ 团结

开头：每次听到这首歌“团结就是力量”这首歌我总是感慨万千，特别是在xx

事情后，体会更是深刻。

结尾：一滴水是微不足道的，渗入泥土，便会消失不见，可汇聚成河却是川流不息，中考作文好开头结尾。如同我们，在许多的困难面前，一个人总是凸显着单薄，而无法

2011年普通高等学校招生全国统一考试（新课标卷）

语 文

一、现代文阅读(9分，第小题3分)

阅读下面的文字，完成l～3题。

《诗经》原来是诗，不是“经”，这在咱们今天是很明确的。但在封建社会里，诗三百篇却被尊为“经”，统治阶级拿它来做封建教化的工具。

从西周初期到春秋中叶，诗三百篇是一种配乐演唱的乐歌。这些乐歌一方面用于祭祀、宴会和各种典礼，当作仪式的一部分或娱乐宾主的节目。另一方面则用于政治、外交及其他社会生活，当作表情达意的工具，其作用和平常的语言差不多，当然它更加曲折动人。例如周代有一种“献诗陈志”的做法，当一些人看到国君或者同僚做了什么好事或坏事，就做一首诗献给他们，达到颂美或者讽谏的目的。还有人由于个人遭受冤屈或不幸，也往往通过诗来发泄和申诉。应该说明，“献诗陈志”是要通过乐工的演唱来献给君上或同僚的，所以卿士“献诗”宗和“替献曲”或“睃贼”、“曚诵”并提。

在人民群众的生活里，诗歌也常用于表情达意，例如《诗经·邶风·新台》和《诗经·泰风·黄鸟》等，都是针对具体的现实问题而发的。古代史传中还有一些不在三百篇之内的“徒歌”，例如《左传·宣公二年》记载宋国将军华元被郑国人提了去，后来逃回来，人民讥笑这位败军之将，做了一个歌儿对他

小升初英语、数学、语文常见面试问题

英语篇

第一部分：自我介绍

范文

Hello, my name is **. I will graduate from ** primary school. I have a single-child family. My father is a teacher and he is very busy. My mother is a housewife. She always stays at home and takes good care of me.

In my spare time, I like playing computer. Sometimes I surf online to look for some useful information. It is really convenient. And also I like reading books at home. My favorite kind of books is novels because they are very interesting. After school, I also play with my classmates.

篇一：关于文化的英语作文

On an introduction to Chinese and western culture of appreciation

Culture is a unique human spiritual phenomenon, as a symbol system, which constitutes the essential difference between man and animal, it is to humanity as a carrier, is a property of humanity, and humanity perish. We can say that culture is the main designer and bearers of the human spirit, the human self-consciousness highest cohesion.

The Chinese culture and western culture differences reflected in many ways。For example, food, clothing, music, ar

篇一：国家文化英文介绍

Christmas Day

Christmas Day falls on the twenty-fifth of December. It is a very happy day for many boys and girls.

On the twenty-fourth of December, all children are very excited. Usually they are sent送 to bed early so that为了 their parents can get the presents ready. Later that night, Father or Mother will put presents in the sock, and leave others at the side of the bed. On Christmas morning, children wake up醒来 very early.They look for their presents. young ones play while dinner is prepared. The rest of the day i

初中数学语文英语物理化学常用口诀

初中几何：常见辅助线作法歌诀

只求系数代数和，字母指数留原样。 人说几何很困难，难点就在辅助线。 辅助线，如何添？把握定理和概念。 还要刻苦加钻研，找出规律凭经验。 图中有角平分线，可向两边作垂线。 角平分线平行线，等腰三角形来添。 线段垂直平分线，常向两端把线连。 要证线段倍与半，延长缩短可试验。 三角形中两中点，连接则成中位线。 三角形中有中线，延长中线加一倍。 梯形里面作高线，平移一腰试试看。 等积式子比例换，寻找相似很关键。 直接证明有困难，等量代换少麻烦。 斜边上面作高线，弦高公式是关键。 半径与弦长计算，弦心距来中间站。 圆上若有一切线，切点圆心半径连。 要想证明是切线，半径垂线仔细辨。 是直径，成半圆，想成直角径连弦。 弧有中点圆心连，垂径定理要记全。 圆周角边两条弦，直径和弦端点连。 要想作个外接圆，各边作出中垂线。 还要作个内切圆，内角平分线梦园。 如果遇到相交圆，不要忘作公共弦。 若是添上连心线，切点肯定在上面。 辅助线，是虚线，画图注意勿改变。 假如图形较分散，对称旋转去实验。 基本作图很关键，平时掌握要熟练。 解题还要多心眼，经常总结方法显。 切勿盲目乱添线，方法灵活应多变。 分析综合

昔日华尔街白领 今朝餐厅服务员 Carlos Araya used to order lobster, filet mignon and $200 bottles of red wine at the Palm Restaurant in midtown Manhattan. Now, he seats customers at its Tribeca branch. Mr. Araya, 38 years old, lost his job in 2007 as a crude oil trader on the New York Mercantile Exchange. After visiting dozens of headhunters with no luck, he applied in August 2008 to be a host at the Palm to support his wife, two young daughters and mortgage payments. His salary has plunged from $200,000 to $25,000. If the financial crisis

昔日华尔街白领 今朝餐厅服务员 Carlos Araya used to order lobster, filet mignon and $200 bottles of red wine at the Palm Restaurant in midtown Manhattan. Now, he seats customers at its Tribeca branch. Mr. Araya, 38 years old, lost his job in 2007 as a crude oil trader on the New York Mercantile Exchange. After visiting dozens of headhunters with no luck, he applied in August 2008 to be a host at the Palm to support his wife, two young daughters and mortgage payments. His salary has plunged from $200,000 to $25,000. If the financial crisis

有关愚人节的英语文章

1.April Fools' Day or All Fools' Day, though not a holiday in its own right, is a notable day celebrated in many countries on April 1. The day is marked by the commission of hoaxes and other practical jokes of varying sophistication on friends and neighbors, or sending them on fools' errands, the aim of which is to embarrass the gullible. In some countries, April Fools' jokes (also called \It is also widely celebrated on the Internet. 2.Origin

The origin of this custom has been much disputed. Many theories have