高考英语一轮复习Unit3Computers学案新人教版必修2

Unit 3 Computers

电脑

晨读·记忆

Computers

The goal of early calculating machines was to simplify difficult sum s. But with the help of new technology, electronic chips replaced tubes and a revolution of artificial intelligence has arisen. From then on, the appearance of computers totally changed our lives. They can not only download information from the web when connected by the network or mobile phone signals, but also solve different types of logical problems. With operators as their coaches, they can even control rockets to explore the moon and instruct androids with the human race’s characters to mop floors and watch over your naughty niece. Anyhow, computers are so helpful that they do bring happiness.

However, computers are easily attacked by viruses. This reality has become a hard-to-deal with-problem. As a result, computers are dangerous in a way. So, personally, I worry about their universal applications in some fields, such as finance.

电脑

早期计算机器的目的是简化比较难的计算。但是在新技术的帮助下，电子芯片代替了电子管，一场人工智能革命由此掀起。从那时起，电脑的出现完全改变了我们的生活，它们不仅能在网络或移动电话信号的连接下从网上下载信息，而且可以解决各种类型的逻辑问题。在操作员的教练下，它们甚至还可以控制火箭探索月球，指导具有人类性格的机器人擦洗地板和照顾你调皮的侄女。不管怎么说，电脑都是如此的有用，以致的确给人们带来了快乐。

然而，电脑很容易受到病毒的攻击，这一现实已经成为一个难以处理的难题，结果，电脑在某种程度上是很危险的。因此，就个人而言，我很担心电脑在某些领域，例如金融方面的广泛应用。

I.单词盘点

1.__________(vt.) 计算

→__________(n.) 计算；盘算；估计

→__________(n.) 计算器

2.__________(adj.) 普遍的；通用的；宇宙的

3.__________(vt.) 简化

→ _________(adj.) 简单的

→ _________(n.) 简单化；单纯化

4.__________(n.) 总数；算术题；金额

5.__________(n.) （电脑）操作员；接线员→ _________(v.) 操作；做手术

→ _________(n.) 操作；手术6.__________(adj.) 合逻辑的；合情理的

→_________(adv.) 逻辑上；合逻辑地；有条理地7.__________(n.) 工艺；科技；技术

→ _________(adj.) 科技的

8.__________(n.) 革命

9.__________(adj.) 人造的；假的

10.__________(n.) 智力；聪明；智能

→ __________(adj.) 智能的；聪明的

11. _________ (vt.) 解决；解答

→__________(n.) 解决办法，解答；溶解

12.__________(n.) 真实；事实；现实

13._________(adj.) 私人的；个人的；亲自的

→ _________(adv.) 就个人而言；亲自

→__________(n.) 个性；人格；名人

14.__________(n.) 管；管子；电子管

15.__________(adj.) 总的；整个的(n.) 总数；合计→ _________(adv.) 完全地；整个地

16.__________(n.) 网络；网状物

17.__________(n.) 网

18.__________(n.) 应用；用途；申请

→ __________(v.) 应用；申请

→ __________(n.) 申请人；求职者

19.__________(n.) 金融；财经

→ __________(adj.) 金融的；财经的

20.__________(adj.) 可移动的；机动的

21.__________(n.) 火箭

22.__________(vt.&vi.) 探索；探测；探究

→ __________(n.) 探索；探测

→ __________(n.) 探险家；勘探者

23.__________ (adv.) (也作anyway)无论如何即使如此

24.__________(n.) 目标；目的；球门；（进球）得分

25.__________(n.) 幸福；快乐

→__________(adj.) 幸福的；快乐的

→__________(adv.) 幸福地；快乐地

26. __________(v.) 下载

27. __________(n.) 病毒

28.__________(vi.&vt.) 发信号(n.) 信号

29.__________(n.) 类型(vt.&vi.) 打字

30.__________(n.) 教练

31. __________(vi.) (arose;arisen)出现；发生

32.__________(adj.) 电子的

→___________(n.) 电；电学

33.___________(n.) 外观；外貌；出现

→ ___________(vi.) 出现

34.___________(n.) 性格；特点

35.___________(n.) 拖把(vt.)用拖把拖；擦

36.___________(adj.) 淘气的；顽皮的

37.____________(n.) 侄女；甥女

→ ____________(n.) 侄子；外甥

38.____________(vt.) 损坏；宠坏

II.短语回顾

1.从……时起

__________________

2.结果

__________________

3.如此……以致于

__________________

4.在某种程度上

__________________ 5.在……的帮助下

__________________

6.处理；安排；对付

__________________

7.看守；监视

__________________

8.弥补；化妆；编造；构成 __________________ III.句式扫描

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4．多面体的定义： 5．多面体的分类： ⑴棱柱的分类 ⑵棱锥的分类 ⑶棱台的分类 【精典范例】 例1：设有三个命题： 甲：有两个面平行，其余各面都是平行四边形所围体一定是棱柱； 乙：有一个面是四边形，其余各面都三角形所围成的几何体是棱锥； 丙：用一个平行与棱锥底面的平面去截棱锥，得到的几何体叫棱台。 以上各命题中，真命题的个数是（A）A．0 B. 1 C. 2 D. 3 例2：画一个四棱柱和一个三棱台。 【解】四棱柱的作法： ⑴画上四棱柱的底面----画一个四边形； ⑵画侧棱-----从四边形的每一个顶点画平行且相等的线段； ⑶画下底面------顺次连结这些线段的另一个端点 互助参考７页例１ ⑷画一个三棱锥，在它的一条侧棱上取一点，从这点开始，顺次在各个侧面画出与底面平行的线段，将多余的线段檫去． 互助参考７页例１ 点评：(1)被遮挡的线要画成虚线(2)画台由锥截得 思维点拔： 解柱、锥、台概念性问题和画图需要：(1).准确地理解柱、锥、台的定义(2).灵活理解柱、锥、台的特点： 例如：棱锥的特点是：⑴两个底面是全等的多边形；⑵多边形的对应边互相平行；⑶棱柱的侧面都是平行四边形。反过来，若一个几何体，具有上面三条，能构成棱柱吗？或者说，上面三条能作为棱柱的定义吗？ 答：不能． 点评:就棱柱来验证这三条性质，无一例外，能不能找到反例，是上面三条能作为棱柱的定义的关键。 自主训练一 1. 如图，四棱柱的六个面都是平行四边形。这个四棱柱可以由哪个平面图形按怎样的方向平移得到？ 答由四边形ABCD沿AA1方向平移得到． 2.右图中的几何体是不是棱台？为什么？ 答：不是，因为四条侧棱延长不交于一点．3．多面体至少有几个面？这个多面体是怎样的几何体。 答：４个面，四面体． 第二课时圆柱、圆锥、圆台、球 【学习导航】 知识网络 A C B D A1 C1 B1 D1

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高中英语必修2（人教版） Unit1 Cultural relics IN SEARCH OF THE AMBER ROOM Frederick William I, the King of Prussia, could never have imagined that his greatest gift to the Russian people would have such an amazing history. This gift was the Amber Room, which was given this name because several tons of amber were used to make it. The amber which was selected had a beautiful yellow-brown colour like honey. The design of the room was in the fancy style popular in those days. It was also a treasure decorated with gold and jewels, which took the country's best artists about ten years to make. In fact, the room was not made to be a gift. It was designed for the palace of Frederick I. However, the next King of Prussia, Frederick William I, to whom the amber room belonged, decided not to keep it. In 1716 he gave it to Peter the Great. In return, the Czar sent him a troop of his best soldiers. So the Amber Room became part of the Czar's winter palace in St Petersburg. About four metres long, the room served as a small reception hall for important visitors.

高中数学必修二学案

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①圆柱：所围成的 几何体叫做圆柱. ②圆锥：所围成的 几何体叫做圆锥. ③圆台：的部分叫 圆台. ④球的定义 三、能力探究 例1．（1）如图，观察四个几何体，其中判断正确的是（） A.（1）是棱台 B.（2）是圆台 C.（3）是棱锥 D.（4）不是棱柱 （2）下列说法错误的是（） A.多面体至少有四个面 B.九棱柱有9条侧棱，9个侧面，侧面为平行四边形 C.长方体、正方体都是棱柱 D.三棱柱的侧面为三角形 （3）下列命题中正确的是（） A.棱台各侧棱的延长线交于一点 B.以直角梯形的一腰为轴旋转所得的旋转体是圆台 C.连接圆柱上、下底面圆周上两点的线段是圆柱的母线 D.圆锥的侧面展开图为扇形，这个扇形所在圆的半径等于圆锥底面圆的半径 （4）下列几个命题中， ①两个面平行且相似，其余各面都是梯形的多面体是棱台; ②有两个面互相平行，其余四个面都是等腰梯形的六面体是棱台; ③各侧面都是正方形的四棱柱一定是正方体; ④分别以矩形两条不等的边所在直线为旋转轴，将矩形旋转，所得到的两个圆柱是两个不同的圆柱. 其中正确的有__________个.（） A.1 B.2 C.3 D.4 （5）下列说法中不正确的是（） A 棱与侧棱是同一概念 B 三棱锥与四面体是同一概念 C四棱柱有4条体对角线 D 存在这样的棱锥，它的各个面都是直角三角形 （6）一个棱柱有10个顶点，所有的侧棱长的和为60 cm，则每条侧棱长为______cm. 例2有两个面互相平行，其余各面是平行四边形的几何体是棱柱吗？如果不是，请举例说明。

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Frederick William Ⅰ，the King of Prussia , could never have imagined that his greatest gift to the Russian people would have such an amazing history . This gift was the Amber Room , which was given this name because several tons of amber were used to make it . The amber which was selected had a beautiful yellow-brown colour like honey . The design of the room was in the fancy style popular in those days . It was also a treasure decorated with gold and jewels , which took the country's best artists about ten years to make . In fact , the room was not made to be a gift . It was designed for the palace of Frederick Ⅰ. However, the next King of Prussia , Frederick William Ⅰ,to whom the amber room belonged, decided not to keep it. In 1716 he gave it to Peter the Great. In return , the Czar sent him a troop of his best soldiers. So the Amber Room because part of the Czar's winter palace in St Petersburg.About four metres long, the room served as a small reception hall for important visitors . Later,Catherine Ⅱhad the Amber Room moved to a palace outside St Petersburg where she spent her summers. She told her artists to add more details to it .In 1770 the room was completed the way she wanted . Almost six hundred candles lit the room ,and its mirrors and pictures shone like gold. Sadly , although the Amber Room was considered one of the wonders of the world , it is now missing . In September 1941, the Nazi army was near St Petersburg . This was a time when the two countries were at war . Before the Nazis could get to the summer palace , the Russians were able to remove some furniture and small art objects from the Amber Room . However , some of the Nazis secretly stole the room itself . In less than two days 100,000 pieces were put inside twenty-seven woooden boxs . There is no doubt that the boxs were then put on a train for Konigsberg, which was at that time a German city on the Baltic Sea . After that, what happened to the Amber Room remains a mystery . Recently , the Russians and Germans have built a new Amber Room at the summer palace . By studying old photos of the former Amber Room , they have made the new one look like the old one .In 2003 it was ready for the people of St Petersburg when they celebrated the 300th birthday of their city . A FACT OR AN OPINION? What is a fact? Is it something that people believe? No. A fact is anything that can be proved. For example, it can be proved that China has more people than any other country in the world. This is a fact. Then what is an opinion? An opinion is what someone believes is true but has not been proved. So an opinion is not good evidence in a trial. For example, it is an opinion if you say “Cats are better pets than dogs”. It may be true, but it is difficult to prove. Some people may not agree with this opinion but they also cannot prove that they are right. In a trial, a judge must decide which eyewit nesses to believe and which not to believe. The judge does not consider what each eyewitness looks like or where that person lives or works. He/she only cares about whether the eyewitness has given true information, which must be facts rather than opinions. This kind of information is called evidence. Unit 2 AN INTERVIEW Pausanias, who was a Greek writer about 2,000 years ago, has come on a magical journey on March 18th 2007 to find out about the present-day Olympic Games. He is now interviewing Li Yan, a volunteer for the 2008 Olympic Games.

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人教版新课标必修2u n i t1课文原文和翻译w o r d格式 IN SEARCH OF THE AMBER ROOM Frederick William Ⅰ，the King of Prussia , could never have imagined that his greatest gift to the Russian people would have such an amazing history . This gift was the Amber Room , which was given this name because several tons of amber were used to make it . The amber which was selected had a beautiful yellow-brown colour like honey . The design of the room was in the fancy style popular in those days . It was also a treasure decorated with gold and jewels , which took the country's best artists about ten years to make . In fact , the room was not made to be a gift . It was designed for the palace of Frederick Ⅰ. However, the next King of Prussia , Frederick William Ⅰ,to whom the amber room belonged, decided not to keep it. In 1716 he gave it to Peter the Great. In return , the Czar sent him a troop of his best soldiers. So the Amber Room because part of the Czar's winter palace in St four metres long, the room served as a small reception hall for important visitors . Later,Catherine Ⅱhad the Amber Room moved to a palace outside St Petersburg where she spent her summers. She told her artists to add more details to it .In 1770 the room was completed the way she wanted . Almost six hundred candles lit the room ,and its mirrors and pictures shone like gold. Sadly , although the Amber Room was considered one of the wonders of the world , it is now missing . In September 1941, the Nazi army was near St Petersburg . This was a time when the two countries were at war . Before the Nazis could get to the summer palace , the Russians were able to remove some furniture and small art objects from the Amber Room . However , some of the Nazis secretly stole the room itself . In less than two days 100,000 pieces were put inside twenty-seven woooden boxs . There is no doubt that the boxs were then put on a train for Konigsberg, which was at that time a German city on the Baltic Sea . After that, what happened to the Amber Room remains a mystery . Recently , the Russians and Germans have built a new Amber Room at the summer palace . By studying old photos of the former Amber Room , they have made the new one look like the old one .In 2003 it was ready for the people of St Petersburg when they celebrated the 300th birthday of their city . A FACT OR AN OPINION What is a fact Is it something that people believe No. A fact is anything that can be proved. For example, it can be proved that China has more people than any other country in the world. This is a fact. Then what is an opinion An opinion is what someone believes is true but has not been proved. So an opinion is not good evidence in a trial. For example, it is an opinion if you say “Cats are better pets than dogs”. It may be true, but it is difficult to prove. Some peo ple may not agree with this opinion but they also cannot prove that they are right. In a trial, a judge must decide which eyewitnesses to believe and which not to believe. The judge does not consider what each eyewitness looks like or where that person lives or works. He/she only cares about whether the eyewitness has given true information, which must be facts rather than opinions. This kind of information is called evidence. 人教版新课标必修2 unit2 课文原文word格式 AN INTERVIEW Pausanias, who was a Greek writer about 2,000 years ago, has come on a magical journey on March 18th 2007 to find out about the present-day Olympic Games. He is now interviewing Li Yan, a volunteer for the 2008 Olympic Games.