2019-2020学年北师大版英语必修2学案含解析：Unit 4 Period One

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1、Can you imagine a world without the Internet？Its surprising to think about it.Now，China has more than 162 million Internet users，according to the China Internet Network Information Centre.This is the second largest number of users in the world after the United States.Today,66% of Chinese netizens(网民

2、) are teenagers.“They spend about thirteen hours every week online， ” said Qian Hulin，an Internet expert.Doctor Song in Beijing Xuanwu Hospital said， “About 14% of Chinese netizens who are teens often last over ten hours to play online games.”The main reasons why teenagers surf the Net are to search

3、 for information，to communicate with others and to have fun.On the Internet，teenagers can find out almost anything.And surfing the Net can help students with their homework and widen their knowledge.Li Dong，a teacher in No.41 Middle School in Shijiazhuang，likes her students to use the Internet.“When

4、 we talk in class，students who surf the Net usually know more background information than the others， ” she said.In addition，people can use the Internet to write letters or stories，send e-mails and chat.Many teens keep in touch with their friends online.It is cheaper than phoning somebody far away a

5、nd also much quicker.根据上文回答下列问题1.Which country has the most Internet users in the world according to the article?America/The United States.2.Why does Li Dong in No.41 Middle School like her students to use the Internet?Because she thinks her students can get more background information by using the

6、Internet.Period One Warm-up & Lesson 1 Tomorrows WorldPre-reading匹配左边的单词与右边的汉语意思第一组 1.climate A.快，迅速地2.flood B.影响3.reality C.真实，现实4.affect D.洪水，水灾；淹没5.rapidly E.气候答案 1.E 2.D 3.C 4.B 5.A第二组 6.growth A.消失7.attack B.乐观的8.chaos C.攻击，进攻9.disappear D.混乱，无秩序10.optimistic E.增长；生长答案 6.E 7.C 8.D 9.A 10.B第三组11

7、.entertainment A.病毒12.harm B.明显的，显而易见的13.crash C.伤害，损害14.virus D.娱乐；款待15.obvious E.(汽车、飞机等 )撞毁；坠毁答案 11.D 12.C 13.E 14.A 15.BStep 1 Fast-readingSkim the text and match the headings with the proper paragraphs.Para.1 A.The future of virtual reality.Para.2 B.Pessimistic ideas towards the future of cyber

8、space.Para.3 C.The growth of the Internet.Para.4 D.Optimistic ideas towards the future of cyberspace.答案 Para.1 4 CBDAStep 2 Careful-reading.Tell whether the following statements are true(T) or false(F).1.More and more computers will be connected to the Internet.(T)2.The Internet came into the world

9、in the 1990s.(F)3.Some experts are pessimistic about the future of the Internet because they are worrying that the world wont be safe.(T)4.Peter Anderson thinks people will be able to work in a virtual world.(T)5.We can live in virtual reality completely.(F).Choose the best answer according to the t

10、ext.1.The writer writes this passage in order to .A.show us the bright future of cyberspaceB.tell people the disadvantages of the NetC.build up the future picture of the influence of the Net on our lifeD.make people know about the advantages of the Net答案 C2.We can infer from the passage that .A.cybe

11、rspace will affect peoples life greatlyB.communicating with your friends on the Internet is always secretC.the Net is sure to have a good effect on peoples lifeD.the Net is sure to have a bad influence on peoples life答案 A3.Angela Rossetto thinks that .A.e-mail will surely replace mailB.most people t

12、hink the Net has a bright futureC.people will book tickets from the NetD.more and more people will buy what they need on the Net答案 D4.The word “chaos” in the second paragraph can be replaced by “ ”.A.an accidentB.a disordered situationC.a fireD.an interruption答案 B5.The main idea of the last paragrap

13、h is that .A.people can do everything in virtual realityB.cyberspace will play an important role in peoples lifeC.the prediction of our life in virtual realityD.people can not live without the Net答案 CStep 3 Post-readingAfter reading the text，please fill in the following blanks.In the last thirty yea

14、rs，the Internet 1.has grown(grow) rapidly，and this growth is 2.clearly(clear) going to continue.Some experts are pessimistic 3.about the future.One worry is crime in cyberspace.In the future,4.terrorists(terror) may “attack” the worlds computers，cause chaos，and make planes and trains crash.5.However

15、，many people are optimistic about the future of the Internet.Already，users can buy books，find out about holiday offers and so on.Angela Rossetto says that in the next few years，it is clear 6.that we are going to see a huge 7.growth(grow) in shopping on the Internet.She also believes that，in the futu

16、re，we 8.will get(get) entertainment from the Net and that television will probably disappear.The mail service may also disappear with the 9.increasing(increase) use of e-mail.Some experts see our future in virtual realitythe use of computers with sounds and pictures that make you feel as if you are

17、in 10.a real situation.Step 4 Sentence-learning1.She also believes that，in the future，we will get entertainment from the Net and that television will probably disappear.句式分析自主翻译 她还确信，我们将来可以在网上进行娱乐活动，而且那时电视很可能不复存在。2.Some experts see our future in virtual realitythe use of computers with sounds and pi

18、ctures that make you feel as if you are in a real situation.句式分析 本句为复合句，破折号后的成分作 virtual reality 的同位语。同位语中 that 引导定语从句，as if 引导表语从句。自主翻译 一些专家预见了虚拟现实的未来计算机通过声音和图像模拟现实，以使人感到仿佛置身于一个真实的空间中。3.We will work in virtual offices，shop in virtual supermarkets，and we will even study in virtual schools.句式分析自主翻译 我

19、们将来会在虚拟办公室工作，在虚拟超市购物，甚至在虚拟学校学习。.阅读理解A(2018辽宁大连高一检测)In the near future，we may be using our eyes to operate our smart-phones and tablets，even when it comes to playing popular games like Fruit Ninja.The Gaze Group has been developing eye-controlled computer technology for nearly 20 years.But those devi

20、ces have been firstly designed to help those with disabilities，and are very expensive.“After a while，we figured out that probably the best way is to go for a mass-market way， ” says Gazes Sune Alstrup Johansen， “where everybody would have this available.”Johansen and some of his colleagues have form

21、ed a new company，The Eye Tribe，which is hoping to develop the technology on a mass commercial level.The technology works when combined with the computing device toward the users face.After making sure of the users eye movements，the technology is then able to easily find where a persons eyes are movi

22、ng，and then allow the eyes to control a cursor(光标).“Our software can then determine the location of the eyes and know where youre looking on the screen to make sure what youre looking at， ” reads an explanation on The Eye Tribe site.There has been a gradual change toward hands-free technology in rec

23、ent years，particularly in the gaming world.Recently Xbox released the Kinect device，which lets users control their Xbox and play certain games using only their hands，legs and voices.But still，most of these devices have been more of a gimmick than a practical way to use ones hands to control a mobile

24、 device.Johansen said a replaceable filter(滤光器) would be a cheap，convenient way for most consumers.And even as companies like The Eye Tribe work to create such a product for the average user，making the eye-controlled technology more accessible and less expensive will have similar benefits for physic

25、ally disabled users.For more articles on modern science，please CLICK here.语篇解读 本文主要介绍了在不久的将来，人们手中的智能手机和平板电脑或许可以用眼睛操控了，甚至在玩像水果忍者这样的流行游戏时也是如此。1.Which of the following is the main idea of the passage?A.An introduction of a new device.B.An introduction of smart-phones.C.An introduction of eye-controllin

26、g technology.D.An introduction of a new technology for the disabled.答案 C解析 主旨大意题。本文主要介绍了在不久的将来，我们可能会用我们的眼睛操作我们的智能手机和平板电脑，甚至在玩像水果忍者这样的流行游戏时也是如此。故选 C。2.The underlined word “gimmick” probably means “ ”.A.truth B.phoneC.trick D.review答案 C解析 词义猜测题。根据画线词所在句可知，它不是一种用手控制移动设备的实用方法，由此可以猜测出这些设备大多只是一种噱头，也就是一种用以

27、吸引人的技巧，故画线词gimmick 的意思是： trick(技巧，诡计)。故选 C。3.According to the passage，we can learn that .A.the eye-controlling technology was first developed for the blindB.there is no such a phone as we can use only with our eyes at presentC.the present developing of the technology will bring no goodD.the eye-cont

28、rolling technology is only intended for the disabled people答案 B解析 细节理解题。根据第一段“In the near future，we may be using our eyes to operate our smart-phones and tablets，even when it comes to playing popular games like Fruit Ninja.”可知，不久的将来我们可能会有这样的智能手机，所以说目前我们还没有这样一部用眼睛控制的手机。故选 B。4.This passage is probably

29、 taken from .A.an experiment report B.a science fictionC.a school textbook D.a science website答案 D解析 文章出处题。最后一段“For more articles on modern science，please CLICK here.”中的“CLICK”是“点击”的意思，由此可以推断出该文章摘自一个科学网站。故选 D。BHidden from the noise of Washington，D.C.，Hillwood Museum is a special treasure.It contains

30、 one of the finest personal collections of Russian and French art in the world.Hillwood Museum was once the home of Marjorie Merriweather Post.She was a rich businesswoman.She owned one of the largest food companies in the United States.She was also very interested in collecting beautiful French art

31、 and furniture.She moved to Russia in the 1930s as her third husband，Joseph Davies，became the American ambassador (大使) in Moscow.Marjorie Merriweather Post had a love for Russian art as well.She bought the house in Washington in 1955 and she wanted to make it into a museum after her death.Many art e

32、xperts helped Mrs Post create its fine collection.Hillwood has many rooms which are filled with her treasures.Visitors can see beautiful music boxes from the eighteenth century and colorful paintings of European princesses (公主).Experts say the ancient wood and gold furniture from France is some of t

33、he finest ever made.Visitors can even look at Mrs Posts jewels and clothes.The museum also has several beautiful gardens.One is designed like the gardens in Japan.It has a bridge and visitors can watch flowers floating in the water.Flowers are also grown all the year in a special glass building or g

34、reenhouse.These flowers are placed in the house throughout the year.After a walk，visitors can rest at a nearby eating place.They can also buy objects to remember this special museum.语 篇 解 读 Hillwood Museum是 一 个 特 殊 的 宝 库 。本 文 介 绍 了 它 的 特 殊 之 处 。5.From the second paragraph，we can learn that Marjorie

35、Merriweather Post .A.lived near Hillwood MuseumB.owned a food company in FranceC.was a successful businesswomanD.was good at painting and designing答案 C解析 细节理解题。根据第二段中的“She was a rich businesswoman.She owned one of the largest food companies in the United States.”可知，Marjorie Merriweather Post 是一个成功的女

36、商人。故选 C。6.Marjorie Merriweather Post moved to Russia because .A.she liked the environment thereB.her husband had a job thereC.she wanted to collect art worksD.she hoped to meet some art experts答案 B解析 细节理解题。根据第三段第一句“She moved to Russia in the 1930s as her third husband，Joseph Davies，became the Americ

37、an ambassador(大使) in Moscow.”可知，Marjorie Merriweather Post 搬到俄罗斯是因为她的丈夫在那里工作。故选 B。7.Which of the following treasures is NOT mentioned in the text?A.Paintings of Japanese princesses.B.Mrs Posts jewels and clothes.C.Ancient wood and gold furniture.D.Eighteenth centurys music boxes.答案 A解析 细节理解题。根据第四段第二

38、、三、四句可知 B、C 、D 三项都被提到了，只有 A项没有被提到。8.What is special about the museums gardens?A.There are some rock hills.B.They are all built in Japanese style.C.Flowers are grown all the year.D.There are some restaurants.答案 C解析 细节理解题。根据倒数第二段中的“Flowers are also grown all the year in a special glass building or gre

39、enhouse.”可知它的特殊之处就是一年四季都种花。故选 C。CFor many kids，the Internet is at their fingertips.From computers to smartphones，a web of information is open to them.According to a new report from the Pew Research Center，about three out of four kids aged 12 to 13 connect the Internet using a mobile device(移动设备) fro

40、m time to time.Many younger kids are online too.Julian Zeitlinger,9，from New Jersey，uses his computer to watch videos and play games.To keep him safe online，his parents monitor(监测 ) his web use and discuss Internet safety with him.“I ask my parents for help if something is wrong， ” Julian says.Mobil

41、e devices offer more ways than ever to share personal information.The information can be dangerous in the wrong hands.A study found that 62% of children aged 8 to 17 have had an unpleasant online experience.Have you ever had to enter a parents e-mail address when signing up for a website? That safet

42、y net is there because of the Childrens Online Privacy Protection Act (COPPA).The law says sites for kids under 13 cannot collect personal information，such as a phone number or full name， without a parents permission(允许).This July，the Federal Trade Commission (FTC) will update COPPA for the first ti

43、me since the law was created，in 1998when there were no smartphones.“The nature of the way kids get online has changed， ” FTC lawyer Phyllis Marcus said.When the changes take effect，COPPA will apply to mobile devices and newer forms of advertising.It will expand what falls under “personal information

44、” to include videos， photographs and services that give user location (位置 ).COPPA doesnt cover everything that can go wrong online.Thats why kids and parents need to know what to look out for and to stop and think before sharing information online.“There is a misunderstanding that if a site is follo

45、wing COPPA，it is totally safe， ” says privacy expert Shai Samet.He runs KidSAFE，which checks whether a site meets KidSAFE standards and is safe.“Its important that kids know how useful the Internet is but that it also can be dangerous if you are not careful， ” he adds.语篇解读 本文是一篇说明文。主要介绍了儿童上网的安全问题及 C

46、OPPA 法案的成因及发展等。9.Julians parents check his web use to make sure .A.he doesnt watch too many videosB.he doesnt play computer gamesC.he stays safe on the InternetD.he controls his online time答案 C解析 细节理解题。根据第二段中的“To keep him safe online，his parents monitor(监测) his web use”可知，朱利安的父母监测他的上网情况是为了确保他的网络安全。1

47、0.How does the author explain childrens unpleasant online experiences?A.By describing his own experiences.B.By presenting scientific research.C.By showing differences.D.By using examples.答案 B解析 写作手法题。根据第三段中的“A study found that 62% of children aged 8 to 17 have had an unpleasant online experience.”可知

48、，作者主要是通过引用研究结果来说明孩子们不愉快的上网经历。11.People often hold the wrong idea that .A.formal websites are always safeB.the Internet is becoming safer and saferC.COPPA can ensure their complete safetyD.daily checks prevent future online problems答案 C解析 细节理解题。根据最后一段中的“There is a misunderstanding that if a site is f

49、ollowing COPPA，it is totally safe”可知，人们认为遵循 COPPA 法案的网站可以确保他们上网的绝对安全，然而事实表明，这是一种误解。12.Whats the main purpose of the text?A.To ask parents to look out for their kids.B.To tell people to be careful online.C.To offer tips on online safety.D.To introduce an online law.答案 B解析 写作意图题。通读全文特别是文章最后一句中的“it also can be dangerous if you are not careful”可知，本文旨在告诫人们在上网时应该小心谨慎。故 B 项符合题意。.七选五Ric