全程设计(三维设计)人教版英语必修2Unit3 Section I.ppt

随着网络技术的快速发展，方便、快捷的网上购物渐成趋势。现在越来越多的人在网上购买自己喜爱的图书。,More Chinese buy books online,Online shopping is becoming popular in China,，,and more and more Chinese are buying books on,the Net.About 63 percent of Chinese,Internet users have made online,purc,-,hases,(,购买,)and 56 percent of them h-,ave,bought reading materials,the,hig,-,hest ratio(,比率,)in the world,，,said a report.,But according to the fourth national reading survey,rele-ased,by the China Research Institute of Publishing Science,theres been a decrease in Chinas national reading ratio over the past six years.,However,，,as Ecommerce(,电子商务,)has become part of peoples daily life,the book market has seen a big jump in sales and,readership.,Dangdang,.com,recently saw a boom(,兴旺,)in its sales and,readership.“Online,bookstores made it possible for people to have more choices,and at the same time,，,promote the print book market,，”,a researcher said.,Yet things are not so good for traditional bookstores.,“Many people come to our bookstore,just to write down,the names of the books they want and then go online to,buy them,，”,said a sales clerk at a traditional bookstore,in Beijing.,Faced with the,lowcost,advantage of online bookstores,traditional ones can do nothing but lower their,prices.How,-ever,，,Huang,Yuhai,，,Chairman of 99,read,.,com,，,an online bookseller said that online bookstores pose no threat to,tra-ditional,ones,，,instead they can serve as a beneficial,comple-ment,(,补充,),Online booksellers still have a long way to go in terms of sales.“It is still too early to tell,，”,Huang said,，“,The to-,tal,sales of three online bookstores including,Dangdang,Jo-,yo,，,and 99,read,reached 500 million,yuan,，,taking up only 2 percent of the book market in China while,Amazon,.com,alo-ne,holds 40 percent to 50 percent of the American market.”,True(T)or False(F),：,1,Buying books from online bookstores is usually more ex-,pensive than buying them from traditional ones.(,),答案：,F,2,In China,，,the total sales of three online bookstores take,up two percent of the total book market,.,(,),答案：,T,Section I Warming Up&Reading,Prereading,语篇全面理解,译文全力助渎,Step 1,Fast Reading,Scan the text and choose the best answer according to the text.,1,Who am I?,A,An operator.,B,Alan Turing.,C,A computer.D,Human race.,答案：,C,2,Why did I totally change my shape?,A,Because I could do many things.,B,Because I could simplify sums.,C,Because my memory improved.,D,Because I never forgot anything.,答案：,C,3,How long did it take before the computer was built as,an analytical machine?,A,500 years.B,300 years.,C,100 years.D,200 years.,答案：,D,4,According to the last paragraph,，,which was not,ment,-,ioned,in the use of the computer?,A,Mobile phones.B,Rockets.,C,Bikes.D,Robots.,答案：,C,5,We can infer that the computer will_.,A,take the place of human race,B,be smarter than human beings,C,be used in many fields in our life,D,will be made by oneself,答案：,C,Step 2,Careful Reading,Read the passage carefully and do the following tasks.,Task 1,：,Read the passage and finish the timeline below,.,1642,：,_,1822,：,_,1936,：,_,1940s,：,_,1960s,：,_,1970s,：,_,Now,：,_,答案：,1642,：,The computer began as a calculating machine.,1822,：,The analytical machine was made by Charles Babbage.,1936,：,The computer grew rapidly both in size and in brain-power.,1940s,：,The computer had grown as large as a room.,1960s,：,The first family of computers was connected to each other.,1970s,：,Computers were used in offices and homes.,Now,：,Computers connect people all over the world,togeth-er,.,Task 2,：,Try to find out the topic sentence of each paragraph.,Paragraph 1,：,_,Paragraph 2,：,_,Paragraph 3,：,_,答案：,1.Over time I have been changed quite a lot.,2,These changes only became possible as my memory improved.,3,Since the 1970s many new applications have been found for me.,Task 3,：,Answer the following questions.,1,What does the passage mainly talk about?,_,答案：,The development of computers.,2,Which sentence can take the place of the sentence,below?,With time passing,，,I was designed much smaller than before.,_,答案：,As time went by,，,I was made smaller.,3,Translate the sentence into Chinese.,But I was always so lonely standing there by myself,，,un-,til,in the early 1960s they gave me a family connected by a network.,_,_,答案：,但是我总是孤孤单单地站在那里，直到,20,世纪,60,年代初，人们才给了我一个用网络联成的家庭。,Step 3,Discussion,Topic,：,What do you think is the future of computer,？,(within 30 words),_,_,答案：,With the development of our society,，,computer will play a more important part in our daily life,，,and it can be used widely in the world.,Step 4,Summary,Computers are becoming more and more popular._,_,，,few can imagine what the _ computers looked,like.At,the beginning,，,a computer was the _ of a large,room.With,time _ by,，,computers have been made smaller and,smaller.The,size of computers _,_ changed after they were _ with new,transi-stors.Later,，,computers were _ by a,network.With,it people can _ information with each other and,even _ with each,other.Since,then,，,computers have come into millions of,homes.Peoples,lives have,beco,-me easier and more _ because of the Internet.,答案：,However,original,size,going,totally,equipped,connected,share,communicate,comfortable,WHO AM I?,Over time I have been changed quite a,lot.I,began as a calculating machine in France in 1642.Although I was young,I could simplify difficult,sums.I,developed very slowly and it took nearly two hundred years before I was built as an anal-,ytical,machine by Charles,Babbage.After,I was programmed by an operator who used cards with holes,I could“think”logically and produce an answer quicker than any,person.At,that time it was considered a technological revolution and the start of my“artificial intelligence”,In 1936 my real,father,，,Alan Turing,，,wrote a book about how I could be made to work as a“universal machine”to solve any difficult mathematical,problem.From,then on,I grew rapidly both in size and in,brainpower.By,the 1940s I had grown as large as a room,and I wondered if I would grow any,larger.However,，,this reality also worried my,designers.As,time went by,I was made,smaller.First,as a PC(personal computer)and then as a laptop,I have been used in offices and homes since the 1970s.,These changes only became possible as my memory,improved.First,it was stored in tubes,，,then on transistors and later on very small,chips.As,a result I totally changed my,shape.As,I have grown older I have also grown,smaller.Over,time my memory has developed so much that,，,like an elephant,，,I never forget anything I have been told!And my memory became so large that even I couldnt believe it!But I was always so lonely standing there by myself,，,until in the early 1960s they gave me a family connected by a,network.I,was able to share my knowledge with others through the World Wide Web.,Since the 1970s many new applications have been found for,me.I,have become very important in communication,，,fi-nance,and,trade.I,have also been put into robots and used to make mobile phones as well as help with medical operations.,I have even been put into space rockets and sent to explore the Moon and,Mars.Anyhow,，,my goal is to provide humans with a life of high,quality.I,am now truly filled with happiness that I am a devoted friend and helper of the human race,！,我是谁？,经过一段时间我已经被改变了很多。,1642,年我在法国诞生时是一台计算机器。尽管当时我还年轻，但是我能简化一些复杂的数学题。我发育缓慢，差不多到了两百年之后，查尔斯,巴比奇才把我制成了一台分析机。在操作员用穿孔卡为了设计程序后，我能够进行逻辑,“,思考,”,，并且能够比任何人更快地算出答案。那时这被当做是一次技术革命，也是,“,人工智能,”,的开始。在,1936,年，我真正的父亲艾伦,图灵写了一本书，讲述了怎样使我成为一台,“,通用机器,”,来解决任何数学难题。从那时起，我在体积和脑容量方面迅速成长。到,20,世纪,40,年代，我已经长得像一间屋子那么大，我不知道是否还会长得更大。但是，这个现实也使得我的设计者很担心。随着时间的推移，我被弄得越来越小。自,20,世纪,70,年代以来，我一直被用在办公室和家庭里，先是用做个人电脑，后来又做成便携式。,这些变化只有随着我的存储能力的不断提高才成为可能。最初是被存储到电子管中，以后是晶体管上，后来是非常小的芯片上。因此，我已经完全改变了我的形状。随着我年龄越来越大，我也变得越来越小。随着时间的推移，我的记忆能力发展得如此之快，就像一头大象一样，从来不会忘记告诉我的任何事情！我的存储容量变得如此巨大，连我自己都不能相信！但是我总是孤孤单单地站在那里，直到,20,世纪,60,年代初，人们才给了我一个用网络联成的家庭。我能够通过万维网和其他人分享我的知识。,从,20,世纪,70,年代起，我又被开发出了很多新的用途。我在通讯、金融和商业领域变得非常重要。我还被放在机器人里面，被用来制作移动电话，并且用来帮助做医疗手术。我还被放置在航空火箭里去探测月球和火星。不管怎样，我的目标是给人类提供高质量的生活。现在我充满了幸福感，因为我是人类忠实的朋友和助手！,