1、Unit 3 Computers晨背15分钟填词并背记ComputersThe goal of early calculating machines was to simplify difficult sums.But with the help of new technology,electronic chips replaced tubes and a revolutionof artificial intelligence has arisen.From then on,the appearance of computers totally changed our lives.They
2、can not only download information from the webwhen 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 racescharacters to mop floors
3、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
4、 some fields,such as finance.电脑早期计算机器的目的是简化比较难的算术。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。在操作员的指导下，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
5、，例如金融方面的广泛应用。1 (vt.)计算 (n.)计算2 (adj.)普遍的；通用的；宇宙的 (n.)宇宙；天地万物3 (vt.)简化 (adj.)简单的 (adv.)仅仅；只；不过4 (n.)(电脑)操作员；接线员 (v.)运转；工作 (n.)手术；运作calculatecalculationuniversaluniversesimplifysimplesimplyoperatoroperateoperation5 (n.)智力；聪明；智能 (adj.)智能的；聪明的6 (n.)真实；事实；现实 (adj.)真正的；真实的 (adv.)真正地；确实地7 (adj.)私人的；个人的；亲自的
6、 (adv.)就个人而言；亲自 (n.)个性；人格；名人8 (n.)应用；用途；申请 (v.)应用；申请 (n.)申请人；求职者 (adj.)应用的；实用的intelligenceintelligentrealityrealreallypersonalpersonallypersonalityapplicationapplyapplicantapplied9 (n.)金融；财经 (adj.)金融的；财政的10 (vt.&vi.)探索；探测；探究 (n.)探险家；勘探者 (n.)探索11 (n.)幸福；快乐 (adj.)高兴的；快乐的12 (n.)类型(vt.&vi.)打字 (n.)打字员13
7、(adj.)电子的 (n.)电；电学financefinancialexploreexplorerexplorationhappinesshappytypetypistelectronicelectricity14make 弥补；编造；打扮；构成15have mon 有共同之处16 all 毕竟；终究17 (时间)过去18 high quality 高质量的upinaftergo byof重点知识30分钟solve vt.解决；解答(P18)单句语法填空With most of the problems (solve),I felt a great weight taken off my mi
8、nd.It may take a long time to find a (solve)to the problem.solvedsolution(1)solve a problem 解决一个问题(2)n.解决办法；处理手段a/the solution sth.的解决方法 solutiontototally adv.完全地；整个地(P18)(1)单句语法填空I (total)agree with what Susan says about the best present.totally(2)单句写作上周共有300人来参观少林寺。Last week 300 people came to vis
9、it the Shaolin Temple.总计24%的人相信这次改革对他们个人和国家来说都是有益的。24%believe that the reform will be beneficial to the country and good for themselves.in totalA total of adj.总的；整个的 n.总数；合计 v.总计；共计 总共 in all 总计；总共 totala total ofin totalsignal vi.&vt.发信号 n.信号(P23)(1)单句语法填空The policeman signalled the driver (stop)hi
10、s car by raising his hand.He stood up,(signal)to the police officer that he had finished talking with his client.to stopsignalling/signaling(2)单句写作树上叶子颜色的改变发出秋天到来的信号。The changing colour of the leaves on the trees that it will soon be autumn.sends out the signal(1)signal(to)sb.sth.示意某人做某事signal(to)sb
11、.that.示意某人(2)a signal 交通信号 a signal 发出信号to dotrafficsend outarise vi.(arose,arisen)出现；发生；起身(P23)(1)写出下列句中arise的含义Unexpected difficulties arose in the course of their experiment.Mistakes often arise from carelessness.They arose at sunrise to get an early start to the park.Seeing their teacher come in
12、to the classroom,all the students arose from the chairs.出现；产生由引起起床起身(2)单句语法填空A number of high buildings (arise)where there was nothing a year ago but ruins.have arisen(3)单句写作你开车时越小心越好，事故往往是由疏忽大意引起的。You cant be too careful while driving;accidents often carelessness.太阳东升西落。The sun in the east and sets
13、 in the west.半导体的故事这本书激发了这个男孩对物理的兴趣。The book,The Story of Semiconductors,the boys in physics.他提高了嗓音，以便所有学生都能听见。He so that he could make himself heard by all the students.arise fromrisesarousesinterestraised his voice(1)arise表示“出现；发生”之意时，其主语多为problem,argument,quarrel,danger,movement,question等抽象名词，多指
14、事情发生或出现。(2)arise 由而引起；由而产生 不好的from/out of易混辨析原形词性词义过去式 过去分词 现在分词 arisevi.出现；发生；起身risevi.升起；增长；上升raisevt.举起；抚养；饲养arousevt.唤醒；引起 arosearisenarisingroserisenrisingraisedraisedraisingarousedarousedarousing一言辨异 One of the problems from the present economic situation is that the price is sharply,of course
15、,partly because some illegal businessmen it on purpose,which has some objections.当前经济形势产生的问题之一是价格迅速上涨，当然，部分原因是一些不法商贩故意提高价格；这种现象已经引起了一些反对之声。arisingrisingraisearousedas a result 结果；因此(P18)单句写作我们花很多钱为旅游业做广告。结果，越来越多的游客来到我们的家庭宾馆。Weve spent a lot of money on advertising tourism.，more and more visitors com
16、e to our family hotel.As a result由于政府的支持，乡村变得越来越宜居。the support from the government,the villages become more and more comfortable to live in.定期锻炼会减少压力。Regular exercise can reducing stress.他行走困难是因为小时候的病症。His difficulty in walking a childhood illness.As a result ofresult inresults from(1)as a result表示“
17、结果；因此”，引出 ，在句中充当状语as a result of表示“作为的结果；由于”，引出 ，是介词短语(2)result 由造成；因而产生，后跟原因result 导致，后跟结果结果原因frominin a way 从某种意义上；在某种程度上(P23)用way相关短语的适当形式填空，he has made great progress this term.Her social life got of her studies.He decided that he would drive home instead of putting up at a hotel for the night.，
18、I found that book you were looking for.In a wayin the wayall the wayBy the wayAll the goods were transported the Netherlands.Only can we grow up to be independent and become truly successful.should you lose heart when you are faced with difficulties.by way ofin this wayIn no way名师点津(1)表达“在某种程度上”时，还可
19、用in a sense,to a/some degree及to an/some extent三个短语。(2)in no way置于句首时，句子要部分倒装。deal with 处理；安排；对付；涉及；讨论；与交易(P24)(1)写出下列句中deal with的含义There are too many difficulties for us to deal with.He has learnt to deal properly with all kinds of complicated situations.It is an attempt to deal with a set of weight
20、y topics.They have learnt to deal with various persons.处理应付涉及与打交道(2)单句语法填空Ive dealt this company for 20 years.If youll knock down the price by another 5 dollars,its deal.witha(3)句型转换I dont know how they will deal with the problem.I dont know they will do with the problem.whatdo sth.处理/对付某事have somet
21、hing/nothing 与有关/无关deal sth.做生意；经营；买卖；对某事感兴趣make 达成协议；做成交易 成交/一言为定！a 合算的买卖名师点津 deal with 常与疑问词 how 连用，而 do with 常与疑问词 what连用，二者均表示“如何/怎么处理/对付”。withto do withina dealIts a deal!good dealAs time went by,I was made smaller.(P18)(1)单句写作入乡随俗。When in Rome,do.她虽然长得这么高，却仍够不着那些橙子。Tall，she couldnt reach the o
22、ranges.as the Romans doas she was你可以看出，由于作业繁多，将近10%的学生缺乏睡眠。，nearly 10%of students lack sleep because there is much homework to do.As you can see(2)一句多译随着时间的推移，我逐渐适应了学校生活。，I gradually adapted myself to the school life.(as)，I gradually adapted myself to the school life.(with)As time went byWith time g
23、oing by(1)as引导 状语从句，译为“随着”，也可以表达“一边，一边”的意思。(2)as还可以引导 状语从句、状语从句、状语从句、状语从句及定语从句。(3)as也可作介词，意为“”，经常构成短语，如work as,serve as,describe.as.等。时间原因让步方式比较作为名师点津 as作为连词，意为“随着”，引导时间状语从句；with作为介词，意为“随着”，后跟v.ing形式作宾补，构成with的复合结构，作时间状语。Over time my memory has developed so much that,like an elephant,I never forget
24、anything I have been told!(P18)(1)单句语法填空At that time I loved basketball much that I played all day long.Dalian is an attractive place that lots of tourists visit the city every year.sosuchIt is lovely weather that we all want to go out for a walk.The washing machine (repair)for two hours.I dont know
25、 how long I will continue to wait.This book (translate)into many languages up to now.suchhas been repairedhas been translated(2)单句写作句式升级我们做得那么好以至于被邀请与全校同学分享观点和经验。a普通表达：We did we were invited to share our idea and experience with all the students of our school.b高级表达：we were invited to share our idea
26、and experience with all the students of our school.(倒装句)so well thatSo well did we do thatso/such.that 引导结果状语从句，意为“如此以至于”。(1)so.that.句型的常见形式：soadj./adv.that.soadj.ann.单数可数名词that.somany/few/much/little 少.n.that.(2)such.that.句型的基本结构：suchanadj.n.单数可数名词that.suchadj.n.复数可数名词/不可数名词that.(3)当so./such.放在句首时，
27、主句要用部分倒装。现在完成时的被动语态(1)现在完成时的被动语态的句式结构肯定式主语have/has been done.否定式主语have/has not been done.一般疑问式Have/Has主语been done.？特殊疑问式 疑问词have/has主语been done.？(2)现在完成时的被动语态的用法表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果，通常与already,yet,never,recently等副词及时间状语so far,by now,up till now,since,before等连用。表示一个被动的动作或状态开始于过去，持续到
28、现在，并有可能持续下去，常与for或since引导的时间状语连用，或用于“How long.？”句型中。课文语法填空5分钟The history of computers began in 1642 in France.They were first built only as 1 (calculate)machines,and it took nearly two hundred years 2 it was built as an analytical machine that could“think”3 (logic)and produce an answer quicker than
29、any person.Still later,4 “universal machine”was built to solve mathematical problems,5 made computers huge!As the years 6 (go)by,computers were made smaller,quicker 7 cleverer.Later,computers were connected by a network and brought into common peoples homes to deal 8 information and help communicati
30、on between people around the world.Since 9 (they)birth,computers have always 10 (design)to serve the human race.Now many people think its impossible to live without computers!1 2.3.4.5.6 7.8.9.10.calculatingbeforelogicallythewhichwentandwiththeirbeen designedthe history of.意为“的历史”。.was built to solv
31、e mathematical problems中的不定式作目的状语。information为纯不可数名词，即任何情况下都没有复数形式。before“之后才”，引导时间状语从句。It isadj.to do sth.结构，意为“做某事是的”。随堂检测10分钟.单句语法填空1If you are not (total)satisfied,return it at our expense.2I saw a person (signal)for help by the shore.3With many problems (arise),he didnt know what to do next.4(p
32、erson)speaking,I am satisfied with all the work you have done.totallysignaling/signallingarisingPersonally5Money does not always bring (happy),but without it people often cant live well.6This question is too difficult for the children.I think wed better find a way to (simple)it.7After graduating fro
33、m the college,he made an (apply)to the school for a job as a teacher.happinesssimplifyapplication8Although more advanced equipment can provide you more choices,it cannot take the place of practice and experience.9The students are looking forward to having an opportunity(explore)society for real-life
34、 experience.10With global warming becoming more and more serious,it wont be long some coastal cities disappear.withto explorebefore.教材微写作A根据提示完成句子1近来，高智商的机器人出现了。(intelligent;arise)答案：Highly intelligent robots have arisen recently.2有些可以打字和发信号。(type;signal)答案：Some can type and signal.3有些能处理一些重要事情。(dea
35、l with)答案：Some can deal with some important things.4在某种程度上，电脑改变了我们的生活。(in a way)答案：In a way,computers have changed our life.5许多学生对电脑如此着迷以至于在电脑上花费了太多的时间。(so.that.)答案：Many students become so crazy about computers that they spend too much time on them.6结果，一些学生在考试中失败。(as a result)答案：As a result,some of
36、the students fail in the exam.7不管怎么说，电脑在我们的日常生活中起很重要的作用。(anyhow)答案：Anyhow,computers play an important part in our daily life.B将以上句子连成一篇逻辑严密的短文，注意书写规范 答案：Highly intelligent robots have arisen recently,some of which can type,signal,and even deal with some important things.In a way,computers have chang
37、ed our life.However,many students become so crazy about computers that they spend too much time on them.As a result,some of the students fail in the exam.Anyhow,computers play an important part in our daily life.单元拓能训练单元话题写作应用文假定你是李华，你的笔友王强最近沉迷于玩电脑游戏，给他带来很多危害。请你给他写一封书信，劝说他戒掉这个不良习惯，并提出建议。内容包括：1浪费了学习的
38、时间；2对身心健康造成危害；3你的建议。注意：1.词数100左右；2可以适当增加细节，以使行文连贯。精彩范文Dear Wang Qiang，Hearing that you are addicted to playing computer games,I felt very worried.To begin with,it will make you waste too much valuable time which should be spent on your study.In addition,playing games for a long time will do harm to
39、your health,especially to your eyes.Worse still,some games are full of violence,which will be harmful to your mental health.Therefore,I strongly hope that you can break away from it.The earlier,the better.You can read more good books,take more exercise or participate in some social activities to bro
40、aden your horizons.I hope the advice above will be helpful to you.Looking forward to your good news.Yours，Li Hua课时作业.阅读(2020河南省中原名校上学期第二次质量考评)It can be tough to pull kids away from their computers and mobile devices these days.While theyre playing games,wouldnt it be great if they could be learning
41、at the same time?Good educational apps offer fun challenges that teach specific grade-level skills.Here are four that combine fun and learning.Understanding Math($3.99;iOS)Understanding Math goes beyond basic comprehension to gain a deeper understanding of the whys and hows of math.The app tracks yo
42、ur childs progress to determine strengths and weaknesses in different skill areas,and you can customize(订制)your childs learning experience to suit the needs.Word Creativity Kit($2.99;iOS)Word Creativity Kit aims not only to make creative writing fun but also build up grammar rules.The app presents a
43、 series of words from seven categories,such as space or fantasy.Kids add their own words to finish the complete thoughts that these words have inspired.Barefoot World Atlas($4.99;iOS)Barefoot World Atlas helps kids learn about geography and world cultures with a touch of the screen.Each region featu
44、res a set of sub-topics,from wildlife and natural features to native people,landmarks,and architecture.These facts and illustrations are delivered in photographs,sounds,and hundreds of mini videos.My Grades&Homework($0.99;iOS)A combination of grades and homework tracker,My Grades&Homework can help y
45、our child stay organized and on top of the progress in school.A convenient calendar and course list format and offer a glance at your childs assignment schedule that he or she might not normally get from standard homework planners.篇章导读：本文是一篇应用文。文章推荐了四个有趣的学习app供读者购买和使用。1Which app is beneficial to chi
46、ldrens writing skills?AUnderstanding Math.BWord Creativity Kit.CBarefoot World Atlas.DMy Grades&Homework.答案：B 细节理解题。根据第三段中的“Word Creativity Kit aims not only to make creative writing fun but also build up grammar rules.”可知，Word Creativity Kit能帮助孩子写作和建立语法规则。故选B项。2What is the common part of the four a
47、pps?AThey need purchasing when downloaded.BThey help children improve their grades.CThey make studies fun because of mini videos.DThey inform parents of their childrens progress.答案：A 推理判断题。根据“Understanding Math($3.99;iOS),Word Creativity Kit($2.99;iOS),Barefoot World Atlas($4.99;iOS)”和“My Grades&Hom
48、ework($0.99;iOS)”每个app之后出现的价格可以推断，下载这些应用时都需要付费。故选A项。3What is the purpose of the text?ATo wish readers to bring in more similar apps for children.BTo encourage parents to allow their students to play apps.CTo design the educational apps to combine fun and learning.DTo introduce four educational apps
49、for readers to buy and use.答案：D 推理判断题。根据文章第一段中的“Good educational apps offer fun challenges that teach specific grade-level skills.Here are four that combine fun and learning.”和每个应用后面的价格可以推断出，本文主要介绍一些有趣的教育app让读者购买。故选D项。【词汇积累】track v.跟踪；追踪 illustration n.说明；例证 deliver v.发表；发布【长难句分析】Understanding Math
50、goes beyond basic comprehension to gain a deeper understanding of the whys and hows of math.Understanding Math超越了对数学的基本理解，从而更深刻地理解数学的原理。分析：此句是简单句。to gain a deeper understanding of the whys and hows of math为不定式短语作结果状语。.完形填空Jim and Bob joined a company together.Both worked very hard.After several year
51、s,however,the boss promoted Bob to the 1 of manager but Jim remained a(n)2 employee.Jim could not take it anymore,3 his resignation to the boss and 4 that the boss did not know how to use people.The boss thought for a moment,“Im sorry,but I have a 5 .I hope you will do one more thing for our company
52、 6 you leave.Perhaps you will change your 7 and take back your resignation.”The boss asked him to go and 8 anyone selling watermelon in the market.Jim returned soon and said he had done it.The boss asked how much per kg?Jim 9 his head and went back to ask and returned to 10 the boss$1.2 per kg.Then
53、the boss called Bob to come to his 11 .He asked Bob to do the same.Bob returned and explained what he had seen about the watermelon in the 12 in details.Jim was very 13 and realized the 14 between himself and Bob.He decided not to 15 but to learn from Bob.篇章导读：本文是一篇记叙文。文章通过Jim和Bob完成同一项任务的巨大反差说明：在工作中
54、要善于捕捉有效信息，并详细周到地分析问题。1A.position BpartCsituationDcondition答案：A position“职位”；part“角色”；situation“情况”；condition“条件”。句意：然而，几年以后，老板把Bob晋升到了经理的职位。故选A。2A.superBordinaryCtypicalDhorrible答案：B super“极好的”；typical“典型的”；horrible“可怕的”；此处指Jim依然是名“普通的(ordinary)”职员。故选B。3A.comfortedBvaluedCignoredDoffered 答案：D Jim认为自
55、己受到了不公平的待遇，主动递交(offer)了辞职信。故选D。4A.struggledBopposedCcomplainedDmurmured答案：C Jim 认为自己受到了不公平的待遇，所以自然是向老板抱怨(complain)。murmur 表示“私下发怨言，发牢骚”。故选 C。5A.actionBrequestCopinionDcommand答案：B action“行动”；request“请求”；opinion“观点”；command“命令”。由“I hope you.”可知，这是老板的一个请求。故选B。6A.whenBafterConceDbefore答案：D 句意：我希望在你离开公司之
56、前(before)，再为公司做一件事情。故选D。7A.thought BtrickCdecisionDpromise答案：C thought“想法；看法”；trick“诀窍，技巧”；decision“决定”；promise“许诺”。由“and take back your resignation”可知，老板认为可能Jim会改变他的决定，拿回他的辞职信。故选C。8A.pick out Bmake outCgive outDfind out 答案：D 根据下文内容可知，老板让他去市场上找(find out)卖西瓜的。故选D。9A.noddedBshookCtouchedDhit答案：B 由下文“a
57、nd went back to ask and returned to”可知，他不知道价格，自然是摇(shake)头。故选B。10A.tellBremindCpersuadeDwarn答案：A 句意：他去市场询问了一下，回来告诉(tell)了老板西瓜的价格。故选A。11A.restaurantBhotelChomeDoffice答案：D 句意：老板让Bob来他的办公室(office)。故选D。12A.streetBshopCfarmDmarket答案：D 由于老板让Bob做和Jim一样的事情，所以这里是Bob详细地解释了市场上(market)西瓜出售的情况。故选D。13A.impressedB
58、disappointedCangryDsatisfied答案：A 由下文“but to learn from Bob”可知，Jim很佩服Bob。be impressed(by)“(对)钦佩，敬仰，有深刻的好印象”。故选A。14A.failure BspaceCdifference Dboom答案：C failure“失败”；space“空间”；difference“差异，不同”；boom“繁荣”。句意：Jim意识到了自己和Bob之间的差距。故选C。15A.pumpBresignCargueDfight答案：B pump“涌出”；resign“辞职”；argue“争论”；fight“打架”。句意
59、：Jim决定不辞职了，而是向Bob学习。故选B。.七选五(2020广东省高三六校第一次联考)What does WiFi stand for?Long gone are the days of dialup and waiting for your turn to use the computer.Its easier than ever to connect to the Internet in the digital world today.1 WiFi is a wireless network that uses radio frequency signals to connect t
60、o the Internet or send messages between devices without wires.Everything from your phone and laptop to tablets and printers can use WiFi,thanks to these waves.2 Two years later,a group of companies formed the Wireless Ethernet Compatibility Alliance(WECA,now the WiFi Alliance),a global nonprofit org
61、anization created to promote the new WiFi standard.None of that history explains what WiFi stands for,because the phrase doesnt stand for anything.WiFi is a trademarked term describing the device or technology based on the Institute of Electrical and Electronics Engineers(IEEE)wireless communication
62、 standard 802.11,according to the WiFi Alliance.3 So the WiFi Alliance hired the marketing company Interbrand to come up with a shorter name:WiFi,according to one of the founding Alliance members.4 The rumor that it stands for“Wireless Fidelity(无线保真)”is thanks to the Alliance.Some members didnt unde
63、rstand the branding or marketing for WiFi.They felt consumers would want an explanation for the name.So the Alliance agreed to include a tagline:The Standard for Wireless Fidelity.Thats why so many people assume WiFi stands for wireless fidelity,but the tagline came after the name.5 Dont add to the
64、confusion and stop associating these phrases by learning the real meaning behind these acronyms(首字母缩略词)AThats a mouthful.BThis is mostly thanks to WiFi.CThe name caused a misconception about WiFi.DThere is some debate surrounding the question what WiFi stands for.EIn 1997,a committee of industry lea
65、ders approved a common WiFi standard.FSeveral years ago,a common standard of WiFi was set up by several companies.GPlus,the Alliance removed the tag,although the confusion it brought still lives on today.篇章导读：本文是一篇说明文。在当今的数字世界，上网比之前更加容易，这主要感谢WiFi，本文介绍了什么是WiFi。1B 根据第一段前两句可知，拨号上网的日子早已成为过去，如今和以往相比更容易连接
66、网络，且设空处下文紧接着介绍了WiFi的相关内容，由此可知，B项“这主要感谢WiFi”承上启下，符合语境。2E 根据设空后一句可知，两年后，几个公司成立了无线以太网兼容性联盟，目的是推广新的WiFi标准。与新的标准相对应则是一般的、普通的标准，E项中的“a common WiFi standard”与设空后的“new WiFi standard”对应，再结合常识和语境可知答案选E项。3A 根据前一句可知，根据WiFi联盟的说法，WiFi是一个商标术语，用来描述基于IEEE无线通信标准802.11的设备或技术，下文表明WiFi联盟聘请了营销公司Interbrand为它起了一个短一点的名字：WiF
67、i；由此可知，上文的那个名字又长又拗口。故A项符合语境。mouthful意为“又长又拗口的词(或短语)”。4D 根据下文中的“The rumor that”和“Some members didnt understand”可推知，人们对于WiFi是什么这个问题还有一些争议，故选D。5G 根据设空后一句可知，作者建议不要混淆两者；设空前两句又表述该联盟的标签带来了混淆。由此可知，G项“而且，虽然该联盟去除了这个标签，但它带来的困惑到现在仍然存在”符合语境。.概要写作阅读下面短文，根据其内容写一篇60词左右的内容概要。The Internet provides people with a large
68、 quantity of information,but is so much information valuable for people,or does it cause problems to people?In my opinion,every coin has two sides.The advantages of the Internet information are much more than the disadvantages it brings to people.The Internet advocates freedom of information exchang
69、e and speech.This is an important part of a successful modern democratic(民主的)society.With a good many information sources,people have the opportunity to teach themselves.The knowledge that people master will allow them to make contributions to the development of the society.In the same way,the abili
70、ty to listen to different opinions will allow people to join in meaningful dialogues with others.This will make people more and more openminded and the society more and more tolerant(宽容的).The Internet,through the information on it,will bring together people of the same interests and the same concern
71、s,and encourage them to work together.They will become active members of the society.However,critics(批评家)of free flow of information on the Internet are worried that incorrect or bad information will have a harmful influence on people.People will be addicted to it and act on it.This concern is very
72、reasonable,because the Internet is anarchic(无政府主义的)in nature,and anyone that has a computer can create a website and post information on it.It is really quite hard to determine whether the information is correct or not.In fact，people can solve this problem by learning to evaluate information sources
73、.For example,the website of a scientist at a major university is no doubt a much more reliable information source than the personal website of a junior student.写前导读：本文是一篇议论文。文章探讨了互联网的优、缺点及相关使用建议。精彩范文There are more advantages of the Internet than the disadvantages that it brings to people.(要点1)Freedo
74、m of information exchange and speech,which is advocated on the Internet,is an important part of a successful modern democratic society.(要点2)But critics are concerned about the harmful effects of incorrect or bad information on the Internet.(要点3)However,people can work out the problem by learning to make a judgement about information sources.(要点4)本课结束