Unit 4 Welcome to the unit &Reading 1ppt课件-（2020）新牛津译林版高中英语选择性必修第二册.pptx

1、By the end of this section, you will be able to:1. know what descriptions in science fiction have turned into reality; 2. share your ideas about whether anything people can imagine can be made real;3. imagine future technology and explain how it will change peoples lives.The advance of technology is

2、 based on making it fit in so that you dont really even notice it, so its part of everyday life.-Bill GatesTechnology has been so associated with our daily life that we largely depend on it and even we cant live smoothly without it.Read the quotation from Bill Gates and answer the questions.Science

3、fiction becomes a reality with the development of science and teconology. Watch the video and finish the follwing exercises on Page 43. Twenty Thousand Leagues Under the Sea（海底两万里海底两万里）:Travelling deep under the ocean 2001: A Space Odyssey（2001太空漫游太空漫游）: Travelling to _ The Matrix（黑客帝国黑客帝国）: Connect

4、ing the human brain with _ and entering the virtual worldthe Mooncomputers1. What other descriptions in science fiction have turned into reality?2. Jules Verne believes that anything people can imagine can be made real. Do you agree? Why or why not?You are extraordinary if you have a dream, miracle

5、will come true with courage.3. What technology do you imagine will be possible in the future and how do you think it will change our lives?U4 ReadingDoes she sing well?Her name is Hua Zhibing.She is a virtual character. Now lets know more about her.1. What is AI ?It is a branch of computer science.2

6、. When was the term “artificial intelligence” coined?In the mid-1950s.Lead-inBy the end of this section, we will be able to:1. analyse the benefits and potential threats of the development of AI;2. understand the meaning and function of words in context.Learning Objectives1.1.以非常快的速度以非常快的速度2.2.空中楼阁；

7、白日梦空中楼阁；白日梦(para1)(para1)3.3.以以的速度的速度 ; ; 按按.的比率的比率4.4.基本上基本上(para2)(para2)5.5.一个一个的分支的分支6.6.目的是，旨在目的是，旨在7.7.有能力做某事有能力做某事 ; ; 能够做某事能够做某事 8.8.调节；调整以适应调节；调整以适应at a very rapid pacecastle in the airat arate at a basic levela branch ofaim tobe capable of doingadjust toSelf- study9. 9. 执行任务执行任务10.10.接近；通往

8、接近；通往的方法的方法11.11.提出提出( (观点、建议、理论等）观点、建议、理论等）12.12.使使能够做某事能够做某事13.13.有能力做某事有能力做某事14.14.大量的大量的+un.+un.大量的大量的+un.+un.15.15.使某事成为现实使某事成为现实(para3)(para3)_16.16.在在方面，在方面，在领域领域perform tasksapproaches to sth/doingput forwardenable . to do sth.have the capacity to domassive amounts of+un.make sth a realityin

9、 the field of17.17.被应用在被应用在(para4) (para4) 18.18.略举数例略举数例19.19.许多许多+cn.+cn. = many= many20.20.即时翻译即时翻译21.21.总之；简言之总之；简言之(para5) (para5) 22.22.处于转折点处于转折点23.23.靠近，接近靠近，接近24.24.分界线分界线25.25.承诺某人某事承诺某人某事be applied into name but a fewa number ofinstant translationsin shortat a turning pointget close to(a)

10、 dividing linepromise sb sth26.26.对某人有利；有利于某人对某人有利；有利于某人27.27.犯罪犯罪25.25.变得依赖变得依赖.26.26.敦促某人做某事敦促某人做某事27.27.人类人类28.28.需要某人的关注需要某人的关注29.29.成为成为的牺牲品的牺牲品/ /受害者；受害者；屈服于屈服于papara6)ra6)25.25.盼望，希望得到盼望，希望得到work to ones advantagecommit crimesbecome dependent on.urge sb to do sthhuman racedemand ones attentio

11、nfall victim to sthwish forArtificial Intelligence: friendly or frightening?main topictwo aspectsPre-readingGuidance & explorationRead the popular science article and complete the chart below with the main idea of each paragraph.When we read an article of science, we usually can find out the main id

12、ea of the passage by joining the topic sentences (usually the first sentence of each paragraph) together.Para. 1AI can make your dreams come true.Para. 2_ _Para. 3_Para. 4_ _Para. 5_ _Para. 6_Watch the video and try to conclude each paragraph.para. 1para. 1Imagine waking up one morning with the opti

13、on of staying in bed and pressing a button to send a robot to do all the work for you. How cool that would be! It may seem like building castles in the air, but given the rate at which artificial intelligence, or AI, is being developed in the future such dreams may actually come true.Para.1: AI can

14、make your dreams come true.Para 2:_Para 3: _Para 4: _Para 5: _Para 6: _Fast readingSummarize the main idea of each paragraphAI is a branch of computer science that aims to create intelligent machines imitating the complex networks of the human brain.AI has developed for a long time and made many bre

15、akthroughs.AI is alreadly being applied in many fields: finance, health care, machine translation and art.The undoubted benefits of AI also bring concerns and fears. We should be careful in order not to fall victim to AI.Try to use one word to conclude each paragraphFast readingPara. 1Para. 1AI can

16、make your dreams come true.Para. 2Para. 2_Para. 3Para. 3_Para. 4Para. 4_Para. 5Para. 5_Para. 6Para. 6_ConclusionIntroductionDefinitionDevelopmentApplicationsConcernspara. 2para. 2At the basic level, artificial intelligence is a branch of computer science that aims to create intelligent machines. One

17、 of the essential aims of AI is to develop computer intelligence capable of learning from experience, adjusting to new inputs and performing tasks like humans. para. 2para. 2To achieve this aim, many approaches to creating true AI have been put forward, including “deep learning”, which enables a mac

18、hine to improve its own performance by learning from the results of its previous actions. Deep learning AI has the capacity to analyse massive amounts of data through multiple layers, imitating the complex networks of the human brain.Read paragraph 2 and fill in the following chart.One essential aim

19、 of AIOne approach to the aim(1) _ To develop computer intelligence capable of learning from experience, adjusting to new inputs and performing tasks like humans(2) _ “Deep learning”, which enables a machine to improve its own performance by learning from the results of its previous actionsDetailed

20、readingDetailed reading(Para. 3)para. 3para. 3The dream of AI has been around for centuries, and the development of computers since the 1940s has finally made it a reality. Years before the term “artificial intelligence” wascoined in the mid-1950s, the theory had been explored by Alan Turing, one of

21、 the pioneers in the field of computer science.para. 3para. 3However, for a long time, AI technology developed very slowly. A major breakthrough in AI came in 1997, when Deep Blue, a chess-playing computer, beat the world chess champion Garry KasParov. Then in 2017, a computer program named AlphaGo

22、defeated Ke Jie, arguably the best human Go player, which demonstrated a significant advance in deep-learning AI systems.TimeWhat happenedSince the 1940sYears before the mid-1950sIn the mid-1950sIn 1997In 2017The development of computers has made the dream of AI a reality.The term “artificial intell

23、igence” was coined.A major breakthrough in AI was made.A computer program AlphaGo defeated arguably the best human Go player.Alan Turing had explored the theory of AI.Detailed reading(Para. 3)The development of AIDeep Blue VS Carry Kasparow AlphaGo VS Ke Jiepara. 4para. 4Nowdays, AI is already being

24、 applied in many fields: finance, health care, machine translation and art, to name but a few. From autonomous vehicles to domestic robots, from recommendation systems to computers writing novels, AI has an unlimited number of applications. Ordinary people are now using AI to get instant translation

25、s of text in foreign languages, and machines can recognize fingerprints and even faces.para. 5para. 5In short, this technology is transforming the way we live. It is clear that we are at a turning point in history. With machines like AlphaGo now capable of thinking and learning from their mistakes,

26、we are getting closer to the dividing line between humans and machines. The question is, where will all this lead? While AI enthusiasts promise us a bright future where intelligent robots will be working to our advantages, these undoubted benefits also bring concerns and fears.para. 5para. 5Could ma

27、chines really develop human-like intelligence? And what would happen if they did? Would thinking machines work alongside humans or threaten the existence of humans? How would they be punished if they committed crimes or even mudered humans? As we become more and more dependent on computers, some sci

28、entists are urging us to think about the dangers posed by the advances in AI. Stephen Hawking, for example, warned, “ The development of full artificial intelligence could spell the end of the human rece.” Read paragraphs 4 to 5 and fill in the following chart.Friendly Frightening (1)_ AI is already

29、 being applied in many fields. People can use AI to help them drive vehicles. Write novels, translate foreign languages and do many other things. From this points of view, AI can be friends with humans.(2) _ The benefits of AI also bring concerns and fears. Could machines really develop human- like

30、intelligence? And what would happen if they did? Would thinking machines work alongside humans or threaten the existence of humans? How would they be punished if they committed crimes or even murdered humans? As we become more and more dependent on computers, we should think about the dangers posed

31、by the advances in AI. Therefore, the development of AI could also be frightening.Artificial intelligencepara. 6para. 6Apparently, such warnings demand our attention. We need to make sure that we will not fall victim to AI. We may still think it would be fantastic to relax all day and allow autonomo

32、us machines to do all the work for usbut perhaps we should not be too greedy and rather be careful what we wish for! 1. What is the authors attitude to artificial intelligence? Use details from the article to support your opinion.2. In lines 44-46, Stephen Hawking is quoted as saying, “The developme

33、nt of full artificial intelligence could spell the end of the human race.” Do you agree with him? Why or why not?DiscussionDiscussion1. What is the authors attitude to artificial intelligence? Use details from the article to support your opinion.He uses the example of having a robot do all your work

34、 for you and says “How cool that would be!” He also explains how AI could benefit us by listing various applications of AI, such as health care and machine translation. CautiousHe asks a series of questions about the future of AI and quotes Stephen Hawking to show the potential dangers. In the concl

35、usion the author also warns, “We need to make sure that we will not fall victim to AI”.ExcitedPost reading。, “The development of full artificial intelligence could spell the end of the human race.” Do you agree with him? Why or why not?DiscussionOption 1Yes, I agree with Stephen Hawking. With the de

36、velopment of full artificial intelligence, machines may become so intelligent that human beings could no longer control them. If super-intelligent AI machines could think and act completely on their own, it remains to be seen how they would treat human beings. It would be extremely dangerous if they

37、 decide that humans are their enemies. Option2I do not agree with Stephen Hawking. I think that scientists fully understand the concerns about AI, and they will surely be careful about developing it. Even if we are able to create true artificial intelligence, we will know how to control it. SummaryW

38、hat we have learned in this class?Para. 1Para. 1AI can make your dreams come true.Para. 2Para. 2_Para. 3Para. 3_Para. 4Para. 4_Para. 5Para. 5_Para. 6Para. 6_ConclusionIntroductionDefinitionDevelopmentApplicationsConcerns With the rapid development of artificial intelligence, many sweet dreams like a

39、 robot doing all the work for you may 1. _(realize). 2. _a branch of computer science that aims to develop intelligent machines, AI is designed for better work and higher efficiency, and people have been in pursuit of the dream of AI for many years. Especially in 2017, a computer program named Alpha

40、Go beat Ke Jie, 3. _(show) a large leap in AI systems.be realized AsshowingPracticeToday, AI has been used in quite a few fields, such as looking after patients, 4. _(perform) surgeries, writing novels, driving, translating, to name 5. _ a few. People feel their life is becoming more and more 6. _ (

41、convenience). This technology is changing our lifestyle for the better. However, 7. _ machines taking the place of humans, here 8. _(be) concerns and fears. People will become more 9. _(rely) on AI machines and they may pose a great threat to the existence of humans, spelling the end of the human race. To conclude, we should sincerely welcome the 10. _(arrive) of AI, but meanwhile, we should be careful of the hidden danger of it.performingbutconvenientwitharereliantarrivalFinish B1&B2 on Page 47HomeworkThank you!