Professor Ashok Goel of Georgia Tech developed an artificially intelligent teaching assistant to help handle the enormous number of student questions in the online class，Knowledge-Based Artificial Intelligence.This online course is a core requirement of Georgia Tech's online Master of Science in Computer Science program.Professor Goel already had eight teaching assistants，but that wasn't enough to deal with the overwhelming number of daily questions from students. Many students drop out of online courses because of the lack of teaching support.When students feel confused and reach out with questions that go unanswered，their motivation to continue begins to fade.Professor Goel decided to do something to remedy （改进） this situation and his solution was to create a virtual assistant named Jill Watson，which is based on the IBM Watson platform. Goel and his team developed several versions of Jill Watson before releasing her to the online forums.At first，the virtual assistant wasn't too great.But Goel and his team sourced the online discussion forum to find all the 40，000 questions that had ever been asked since the class was launched.Then they began to feed Jill with the questions and answers.After some adjustments and sufficient time，Jill was able to answer the students' questions correctly 97% of the time.The virtual assistant became so advanced and realistic that the students didn't know she was a computer.The students，who were studying artificial intelligence，were interacting with the virtual assistant and couldn't tell it apart from a real human being.Goel didn't inform them about Jill's true identity until April 26.The students were actually very positive about the experience. The goal of Professor Goel's virtual assistant next year is to take over answering 40% of all the questions posed by students on the online forum.The name Jill Watson will，of course，change to something else next semester.Professor Goel has a much more hopeful outlook on the future of artificial intelligence than，say，Elon Musk，Stephen Hawking，Bill Gates or Steve Wozniak.（1）What do we learn about Knowledge-Based Artificial Intelligence？ ____ A.It is a robot that can answer students' questions.B.It is a course designed for students to learn online.C.It is a high-tech device that revolutionizes teaching.D.It is a computer program that aids student learning.（2）What problem did Professor Goel meet with？ ____ A.His students were unsatisfied with the assistants.B.His course was too difficult for the students.C.Students' questions were too many to handle.D.Too many students dropped out of his course.（3）What do we learn about Jill Watson？ ____ A.She turned out to be a great success.B.She got along pretty well with students.C.She was unwelcome to students at first.D.She was released online as an experiment.（4）How did the students feel about Jill Watson？ ____ A.They thought she was a bit too artificial.B.They found her not as capable as expected.C.They could not but admire her knowledge.D.They could not tell her from a real person.

26.[单选题]How is the weather tomorrow?(本题为听力题，总共播放2次，播完之后按钮将隐藏)ASunny.BRainy.CWindy.

读一读，想一想，根据答句写出问句。 (1)— —My mother is a nurse. (2)— —Amy goes to school by bike. (3)— —I am going to be a coach. (4)— —John likes drawing pictures. (5)— —He Works in a bank.

Many of us spent our childhoods dreaming of becoming astronauts.However，only a few would make it.But does that mean you'll never get the chance to work in space？Not necessarily. In fact，some of the space jobs are not only for astronauts and they all sound just cool.One of the most interesting space jobs is "chief sniffer （嗅探员）".NASA has already had a sniffer named George Aldrich，whose job is to smell materials before they are used in spaceships. Using your nose at work might sound a little strange，but the job is actually important.A spaceship is of small size and high temperature，which makes smells inside stronger.And once a spaceship is sent，astronauts have no ways to run away from unpleasant smells.More importantly，smelling objects can help find things that could do harm to astronauts' health. Another job，the "space tour guide"，may seem a little ahead of its time—after all，there aren't any tourists there.But now，many companies are starting to provide space trips and some rich space lovers have ordered the tours.It may not be long before space becomes one of the top travel destinations （目的地）. Being a space tour guide requires rich knowledge to help passengers get the most out of their journey.Space tour guides also need to be excellent storytellers so that passengers can experience the true beauty of the space travel. Astronauts often spend long time in space with the same group of people，which is why a "space psychologist （心理学家）" is also needed to help astronauts overcome bad feelings. "We're crossing the boundaries （界限） between science fiction and reality，" said Rohit Talwar，director of the US company Fast Future Research， "Things we've seen in movies are now becoming reality!"根据材料内容选择最佳答案。（1）How many space jobs are mentioned in the text？ ____ A．Two.B．Three.C．Four.D．Five.（2）What's George Aldrich's job at NASA mainly about？ ____ A．Cheering astronauts up with excellent stories.B．Cleaning up dangerous things found in spaceships.C．Checking the size and temperature of the spaceship.D．Keeping astronauts safe from things of unpleasant smells.（3）A space tour guide needs to be ____ .A．helpful in relaxing and full of energyB．rich in money and interested in spaceC．excellent in knowledge and good at storytellingD．successful in research and active in communicating（4）What does Rohit Talwar think of future research in space？ ____ A．It's relaxing.B．It's moving.C．It's exciting.D．It's worrying.（5）What is the best title for the text？ ____ A．True beauty of space travelB．Bright future of space researchC．Dangerous life of being a snifferD．More choices of working in space

Is staring at a big,white wall during class making you feel dull? If you have ever walkedpast math teacher Mr. Kelley's room, you may have noticed how cheerful it is throughout the year.One thing that makes his classroom so much fun is the celebrity(名人）pictures on his front wall.Kelley's students have been writing to celebrities from across the nation asking for a photo and afew words of advice."It really takes a lot of time and money,"Kelley said.First,Kelley and hisstudents make a list of all the celebrities to whom they want to write.Once a student picks a star.Kelley looks it up in his book of address to see if he can write to that person.Writing to the stars takes a lot of time because he has to personalize each letter, print themout, and address them. In the letter, Kelley asks the celebrity to send his classes a picture withsome advice he or she would give to today's youth.Kelley takes up a collection in all of his classes and asks each students to contribute(捐）adollar pay for the postage. Once Kelley mails off all the letters, the fun really begins. So far he hasgotten back about 20 letters and pictures."The only thing that isn't cool is when the celebritysends the picture back with no advice on it, which is my entire purpose in doing this,"said Kelley.When he gets at least three pictures returned, he lets classes guess who the three stars are, Hekeeps score of how many celebrities each class has guessed.Jason Bryant, a student, said,"It'sbecome a contest(竞赛）between the classes to see who can guess the most stars, and it's reallyfun."(1) (单选题)What is the test about?A.celebrities spending photos to Kelley.B.celebrities giving advice to students.C.Kelley and his classes writing to celebrities.D.Kelley inviting celebrities to his classes.(2) (单选题)The expression"personalize each letter"(Linel,Para. 2) means"____"A.to print out cach otherB.to personally send out each otherC.to find the address of each celebrityD.to make the letter suitable for a particular star(3) (单选题)Who pays to send out letters?A.Kelley himself.B.Kelley's Students.C.The contest organizer.D.Jason Bryant.(4) (单选题)What is Kelley's main purpose of writing the letters?A.To educate his students.B.To have pictures for his office wall.C.To improve his students' letter writing skills.D.To help his students know more about the celebrities.(5) (单选题)According to Jason Bryant, they find a lot of fun in____.A.studying mathB.reading repliesC.the name-guessing gameD.receiving pictures from celebrities

______vt.& n.尝试，试图拓展词汇——记一记1．______adj.愿意的，乐意的→______adj.不乐意的2．______vt.保卫，防御；辩解→______n．保卫，防御3．______n．保护，防卫→______vt.保护4．______adj.高兴的，愉快的→______vt.使愉快n．快乐，高兴→______adj.令人高兴的5．______vt.分析→______n．分析6．______n．(作计划或决定时)必须考虑的事→______vt.考虑，打算→______adj.考虑周全的，体贴的7．______adj.政治的→______n．政治8．______n．信仰，信心，信任→______vt.相信9．______vt.宣布，宣告→______n．公告→______n．广播员10．______n．申请(书)，应用→______vt.申请11．______n．解释，说明→______vt.解释12．______vt.雇用→______n．雇用→______n．失业→______n．雇主→______n．雇员④She pretended______when we met in the street，______.(并列句)respect vt.尊敬；尊重；遵守；n.细节；方面；敬意；问候(佳句诵读)I hope airlines can show more respect for passengers and improve service.我希望航空公司能多尊重乘客并提高服务水平。(1)respect sb.for sth.因某事而尊重某人(2)have/show respect for sb.尊重某人out of respect for...出于对……的尊敬；顾及give/send one’s respects to sb.向某人表示敬意(3)in all/many respects在各个方面/在许多方面in respect of关于；就……而言◎巧学巧练6(用respect的相关短语填空)①(2014·江西卷书面表达)In addition，you should______all the teachers who unselfishly help you to gain much knowledge.②Chinese children grow up with warnings not to waste a single grain of rice，______farmers’labor.(句式升级)③我们非常尊敬我们的英语老师。We______our English teacher.④她的谦虚和良好的举止给我们留下了深刻的印象。Her modesty and good behaviours______us.⑤用原因状语从句连接③④句：___________________________________________________________________________________________________________________________________________________________________________________approach vt.& vi.接近；靠近；n.接近；方法；途径；通道(2015·天津卷单项填空)Absorbed in painting，John didn’t notice evening approaching.由于专心绘画，约翰没有注意到夜幕正在降临。(1)an approach to...……的方法/通道(2)approach sth.靠近/接近……...be approaching……快到了All the approaches to the airport were blocked by the police.所有通往机场的路都被警察封锁了。◎巧学巧练7(单句语法填空)①The job market has changed and our approach to______(find) work must change as well.②At the meeting they discussed three different______(approach) to the study of mathematics.(一句多译)随着教师节的临近，今年我们班决定换一种方式举行一场晚会来庆祝这个重要的节日。③As Teachers’Day______，our class decided to hold a party to celebrate the important day for a change this year.④With Teachers’Day______，our class decided to hold a party to celebrate the important day for a change this year.⑤With Teachers’Day______，our class decided to hold a party to celebrate the important day for a change this year.⑥As Teachers’Day______，our class decided to hold a party to celebrate the important day for a change this year.联想发散：注意下面“(做)……的方法”的正确搭配：①the approach to (doing) sth.②the way to do/of (doing) sth.③the means of (doing) sth.④the method of (doing) sth.conclude vt.& vi.结束；推断出(牛津词典)He concluded from their remarks that they were not in favour of the plan.他从他们的话语中推断出他们不赞同这项计划。(1)conclude sth.以……结束conclude that...推断出；断定(2)arrive at/come to/draw/reach a conclusion得出结论in conclusion最后；总之He concluded his speech with a famous saying：“Where there is a will，there is a way.”他以一句名言“有志者事竟成”结束他的演讲。◎巧学巧练8(单句语法填空)①(2014·山东卷书面表达)I drew a______(conclude) from my own experiences that where there is a will，there is a way.②John said he could conclude______Jane’s expression that Jane had stolen his money.③______conclusion，walking is a cheap，safe，enjoyable and readily available form of exercise.(句式升级)④因此，我们可以得出结论。Therefore，we can______.⑤政府应该马上采取有效的措施来保护野生动植物。The government______protect wildlife in no time.⑥用同位语从句连接④⑤句：_____________________________________________________________________________________________________________________________________________________________________________________________________________________arise vi.出现；发生；起身；起床(佳句诵读)These are the problems arising out of the lack of communication.这些问题是因为缺乏交流而出现的。一词多义 写出下列句中arise的含义①Seeing his mother return home，the boy arose from his chair immediately.________②A number of high buildings have arisen where there was nothing a year ago but ruins.________________③They arose at sunrise to get an early start to the park.________④The number of road accidents and the death arising from/which arises from those accidents has increased greatly over the past years.________辨析：arise，rise，raise与arouse◎巧学巧练9(用arise，rise，arouse，raise填空)①The sun was______when we got to the top of the mountain.②Years of experience in driving made Mr Black convinced that he could deal with emergencies______at any time.③Suddenly I realized that I had stayed here long and______to say goodbye to the host.④Give your child some old machines such as a broken radio or TV set to play with and it will______his curiosity.⑤To______people’s awareness of protecting the environment，we launched a campaign.(一句多译)休息时，我们的班主任开始处理课上出现的问题。(arise)⑥At break，our headteacher got down to dealing with the matter______.(分词作定语)⑦At break，our headteacher got down to dealing with the matter______.(定语从句)第二板块 短语·句式stand out突出，显眼(佳句诵读)My brother’s excellent spoken English made him stand out in a group interview.我的哥哥英语口语好，这使得他在集体面试中脱颖而出。(1)stand sth./doing sth.忍受(做)某事(2)stand for是……意思，代表；支持；象征stand by站在旁边；袖手旁观stand out突出；显眼；杰出stand on one’s own feet自立；不依靠他人(全国卷Ⅱ书面表达)In China，these knots stand for friendship，love and good luck.在中国，这些中国结代表友谊、爱和好运。◎巧学巧练1——用stand短语填空①Children should learn to______rather than just depend on their parents.②After several rounds of competition，the little girl______because of her excellent spoken English and quick response.③Good Heavens！How could you______and allow such a thing to happen!④It’s well­known that the olive branch______peace.consist of由……组成(2015·浙江卷单项填空)Listening is thus an active，not a passive behaviour consisting of hearing，understanding and remembering.聆听是一种积极的行为，而不是被动地接受，它包括听、理解和记忆。(1)consist in (＝lie in)存在于……；在于……consist with一致；符合(2)be made up of由……组成make up组成……Life consists of/is made up of not only sunshine but also hard times.生活中不仅仅有阳光，还有艰难的日子。◎巧学巧练2(单句语法填空)①(2014·福建卷书面表达)Success consists______the ability to continue efforts through failures.②The information consists______what is said in the newspaper.(一句多译)由15家小工厂组成的这家公司正面临着严重的财政危机。③The company______15 small factories is facing a serious financial crisis.(定语从句)④The company______15 small factories is facing a serious financial crisis.(定语从句)⑤The company______15 small factories is facing a serious financial crisis.(现在分词作定语)⑥The company______15 small factories is facing a serious financial crisis.(过去分词作定语)温馨提示：由consist组成的几个短语虽然都具有及物性，但是不能用于被动语态和进行时态。in favour of支持，赞同(佳句诵读)Most of them were in favour of my opinion while David was against it.他们大部分人赞成我的观点，而戴维反对。(1)do sb.a favour帮某人一个忙owe sb.a favour欠某人一个人情(2)in favour of赞成；主张in one’s favour对某人有利(2015·重庆卷写作)You’ve introduced two ways to share books：wild release and controlled release.Of the two，the latter wins my favor.您介绍了两种分享图书的方式：自由分享和定向分享；在这两种方式中，我喜爱后者。◎巧学巧练3(单句语法填空)①—Do you believe that opportunities always______(favourite) the prepared minds?—I couldn’t agree more.②I owed him______favour，so I couldn’t say no.(高考小作文)③(2014·江苏卷书面表达)然而，另外一些人赞成收录(英语词汇)，因为很难说这是否会威胁到汉语。However，______the inclusion because it’s hard to say whether it will______.AIDS is another problem of great concern so sex education and health care administration are extremely important.艾滋病是另一个深受关注的问题，所以性教育和保健管理非常重要。句中of great concern是“of＋n.”结构，表示“深受关注的”。(1) of (＋great，no，little，some，much)＋抽象名词(value，importance，use，help，interest，significance，benefit，necessity等)(2)of (＋different，the same，similar)＋分类名词( kind，type，sort，shape，size，colour，length，depth，width，weight，height，age，date等)(3)of (＋good，bad，nice，fine，serious，high等)＋性质名词(quality，character，characteristics，feature等)As we all know，doing morning exercises is of great benefit to our health.众所周知，做早操对身体有益。◎巧学巧练4——单句写作①约翰逊先生，一位了不起的邮票收藏家，手里有许多不同种类和尺寸的邮票。Mr Johnson，a great stamp collector，has owned stamps______.②国民经济增长的情况对所有现代政府至关重要。The economics of national growth are______to all modern governments.③新西兰葡萄酒质量好，畅销全世界。New Zealand grape wine is______and is sold all over the world.However，not all advertising is about selling products and services for a profit.然而，并非所有的广告都是为谋求利润而销售产品和服务的。该句是表示部分否定的句型。all...not...＝not all...，意为“并非所有的……都……”。(1)部分否定用法含“全部/所有/任何”等意义的词与not连用，如：all，both，everything，always等。(2)全部否定用法英语中的no，none，never，nobody，nothing，neither，no one，nowhere，no more，no longer，no way等表否定意义的词(组)与肯定式谓语一起使用构成“全部否定”。①It’s impossible for all the applicants to get the jobs，because not all of them are fit for them.＝It’s impossible for all the applicants to get the jobs，because all of them aren’t fit for them.并非所有的求职者都能找到工作，因为并非所有人都胜任这些工作。②I knew that nothing would ever discourage him；he would never give up wanting to be a director.

【题文】—Would you like to tell me something about Yuan Longping?—He’s called “father of hybrid rice” and he helped save ________ China ________ the world from hunger.A. not only; but alsoB. either; orC. neither; nor

四六级必背十类范文一、求学信/求职信Dear Sir or Madam,I am a senior from the Department of Business Administration. I am writing the letter in purpose of applying for admission into your esteemed institution/your recently advertised position for a staff member.I am sure that I am qualified for it. First, enclosed with this letter is my resume, which further details my previous academic qualifications and work experience. Second, not only do my qualifications and experience make me a perfect candidate for it, my cheerful personality is well suited to studying in your prestigious university/working as a staff member. Last, my hobbies include sports and music.Words fail me when I try to express my heartfelt gratitude to the help you render me. Your prompt and favorable attention to my inquiry would be highly appreciated.Yours sincerely,Li Ming二、开幕词Ladies and gentlemen,Good morning, ladies and gentlemen, welcome to Beijing! To begin with, I would like to make a brief introduction to myself. I am the president of Motorola (China) Electronics Ltd.The following is my introduction to the conference. First, it is my great honor to be here with all of you and declare open the Conference of International Trade Cooperation. Second, on behalf of our company, I would like to express my heartfelt welcome to all the guests and delegates. Last, I believe our cooperative efforts are sure to be productive.I wish all of you enjoy yourselves during this conference and hope the above information will help you. If you have any question for me, please feel free to ask at any time. Thank you for your attention.三、个人简历RESUMELi MingP. O. Box 237, Beijing University5, Yiheyuan Road, Haidian District, Beijing 100871Tel: 62768888 Email:________Career Objective: A position with management potential in the banking business specializing in international corporate financingEducational Background:Sept 2003 to Beijing UniversityJuly 2007 Major in International Business ManagementMain courses include English, Computer, BusinessManagement, Accounting, International Commercial LawWork Experience:July 2006 to Bank of ChinaJune 2007 Internship, Secretary to Deputy Manager of MarketingDraft business correspondenceSchedule deputy manager’s appointmentsQualifications: University graduation certificate and bachelor degree to be conferred upon graduation (2007)College English Test Band 4 June 2005Honors & Awards: Twice awarded scholarship by Beijing University2005& 2006Special Skills: Familiarity with Microsoft Word, ExcelAbility to work independentlyOutstanding Organizational skillsExperience: President of Student Union 2003-presentPersonal Data: Date of Birth: 9/17/1984Gender: FemaleMarital Status: Unmarried四、通知Directions:The Students’ Union of your department is planning a Chinese Speaking Contest. Write an announcement which covers the following information:1) the purpose of the contest,2) time and place of the contest,3) what is required of the candidates,4) details of the judges and awards.Do not sign your own name at the end of the letter. Use Department of Chinese Language and Literature at the end of the announcement.Chinese Speaking ContestFebruary 3, 2007To improve students’ ability to speak Chinese and enrich after-class activities, the Students’ Union of Department of Chinese Language and Literature is organizing a school-wide Chinese speaking contest to be held on Saturday next week (10 February) at the Students’ Auditorium. Those who are interested in taking part in it may sign up with the monitor of their classes before Tuesday next week. Five professors will be invited to be judges. The first six winners will be given awards. Everybody is welcome to be present at the contest.The Students’ UnionDepartment of Chinese Language and Literature五、邀请信Directions: You want to invite some friends to a party. Write an invitation letter to them individually:1) Invite them to the party,2) Elaborate on the reason why such a party should be held,3) What activities will be arranged for them.Dear Snoopy,I am greatly honored to formally invite you to participate in Mr. Guo Jing’s wedding ceremony with Ms. Huang Rong to be held at Beijing Grand Hotel from 8 to 10 p.m. on April 1, 2007.As you are a close friend of us, we would very much like you to attend the celebration and share our joy. The occasion will start at seven o’clock in the evening, with the showing of their wedding ceremony. This will be followed by a dinner party. At around ten, we will hold a small musical soiree, at which a band will perform some works by Bach and Strauss.If you do not have any prior appointment on April 1, we look forward to the pleasure of your company.Yours sincerely,Li Ming六、考试Directions: For this part you are allowed 30 minutes to write a composition on the topic My Views on Examinations. You should write at least 120 words and base your composition on the outline below:1、大学都用考试来衡量学生的成绩2、考生可能带来的副作用3、我对考试的看法In most colleges and universities the examination is used as a chief means of deciding whether a student succeeds or fails in mastering a particular subject. Although it does the job quite efficiently, its side effects are also enormous.To begin with, examinations lower the standards of teaching. Since teachers are often judged by examination results, they are reduced to training their students in exam techniques. No subjects can be taught successfully merely through being approached with intent to take examinations. In addition, the most undesirable effect is that examinations encourage bad study habits. As the examination score is the only criterion for his academic performance, a student is driven to memorize mechanically rather than to think creatively.In fact, few of us admit that examinations can contribute anything really important to the students’ academic development. If that is the case, why cannot we make a change and devise something more efficient and reliable than examinations?七、最难忘的人Directions: For this part you are allowed 30 minutes to write a composition on the topic The most unforgettable Person I ever Know. You should write at least 120 words and base your composition on the outline below:1、我生活中最难忘的人是······2、为什么他(或她)令我难以忘怀3、结论In my life I have met many people who are really worth recalling. But perhaps the most unforgettable person I ever know is my English teacher.What frequently brings back memories of my school teacher is his special qualities. First of all, he gave us the greatest gift a teacher can offer—an awakening of a passion for learning. He not only led us to an appreciation of the beauty and perfection of English language and literature, but also aroused our great interest in explorating something deeper in this field. Second, I was attracted by his lively wit. I remember that we students always anticipated his class with great eagerness because his lecture were humorously delivered, never failing to provoke chuckles or loud laughs.Although it is nearly two years since I attended his last class, he is the talk of our old classmates, and I know part of him has already stayed in my heart.八、表作文Directions: For this part you are allowed 30 minutes to write a composition on the topic Statistics in People’s Daily Expenses in Xi’an. You should write at least 120 words and base your composition on the outline below:1、Describe the changes indicated in the table.2、The reasons for the change.3、Make predictions about the future tendency.(表死活贴不上去，只能贴文章了，^_^)What is shown in the table above indicates that dramatic changes have taken place in the daily expenses in Xi’an from 1995 to 1999. The expenses on food have declined by 30% while those on clothing and recreation have increased respectively by 9% and 7%.There are two factors accounting for these changes. In the first place, the risen income resulting from economic growth plays a vital role in the less expense on food. In the second place, when food presents no worry to the average, people begin to focus more of their interest on handsome appearance and happy leisure time. As a result of such a shift, spending on clothing and recreation increases year by year.From the analyses made above, with the further growth in economy and more changes in life style, the tendency indicated in the table will continue in the better direction.九、压力Directions: For this part you are allowed 30 minutes to write a composition on the topic Is Stress a Bad Thing? You should write at least 120 words and base your composition on the outline below:1、有人害怕压力2、有人认为压力并不是坏事3、我的看法In the past few years, quite a number of men and women have chosen to do something less competitive. They are afraid that the stress and strains of work will rob them of joy and happiness and do them harm both physically and mentally.In fact, however, stress isn’t the bad thing it is often supposed to be. Above all, unless it gets out of control, a certain amount of stress is vital to provide motivation and challenge, and to give purpose and significance to an otherwise meaningless, idle life. Furthermore, people under stress tend to express their full range of potential and to actualize their own personal worth—the very aim of a human life.Stress is a natural part of everyday life and there is no way to avoid it. What we can do is to develop our adaptive abilities to deal with it rather than to escape from it.十、就业Directions: For this part you are allowed 30 minutes to write a composition on the topic Jobs for Graduates. You should write at least 120 words and base your composition on the outline below:1、大学生难找工作2、原因很多3、决的办法Job hunting has always been a headache for college students. Though many graduates are employed right after graduation, some are not. Most serious of all, some still have no idea where to go working even a long time after graduation.The reasons for this phenomenon are various. On the one hand, a few years ago colleges and universities enrolled so many students in popular majors, such as economy, finance and so on that the number of graduates was greater than the need in the market. On the other hand, most graduates would rather stay in large cities without suitable job to do than go to the country.I reckon this problem can be solved if both colleges and students take measures. First, they should research the market and develop special skills to suit its need. Second, students’ attitude towards employment should be changed. They should go to small cities and country. There they can also give full play to their professional knowledge. In a word, if we pay much attention, the situation can be improved.

Without electronic computers， much of today"s advanced technology______．（ ）A. will not have been achievedB. have not been achievedC. would not have been achievedD. had not been achieved

圈出句子中的错误并改正。1. I lost me schoolbag.2. He has a English book.3. Please help my find the dog!4. The sweater are blue.5. Who cap is it?