2020版高考英语新创新一轮复习译林版精练：必修5 Unit 2 课下作业(一_三) 含答案

必修3 Unit 2 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．The young man didn't want to embarrass (尴尬) his girl friend in front of her friends.2．It is still too early to reach a conclusion (结论) on this point.3．Most citizens there were concerned (担忧的) about the energy shortage and drought in that country.4．How many new Chinese characters (人物) have you learned in this passage?5．Being confident in your appearance (外貌) makes you more confident in other areas.6．With their unique (独特的) structure that bridges the past and present, hutongs underline the historical element of city development in China.7．We had to interrupt (暂停) our talk because it was time for lunch.8．The custom (习俗) of naming women after flowers is becoming less common.9．If you think you can carry on drinking so much without damaging your health, then you're mistaken (错误的)．10．All the students have access (使用权) to the health center.11．There is a great deal of evidence indicating (显示) that music activities engage different parts of the brain.12．The DNA test showed that he was not the birth son of the man and woman who had raised (养育) him.13．In the USA a growing number of states have adopted laws to ban (禁止) throwing e-waste.14．After the president made an official (官方的) announcement, she expressed her personal opinion.15．The shower that we put in a few years back has broken and we can't afford to _replace (替换) it.Ⅱ.单句语法填空1．College education wasn't accessible (access) to women until the 1920s.2．He asked several questions concerning (concern) the future of the company.3．As we can see, online shopping has made a great contribution (contribute) to the development of express delivery industry.4．I've finally finished my paper and it took me an entire (entirely) month.5．The Silk Road was named after ancient China's silk trade, which played an important role in the civilization development of China, South Asia and Europe.6．It seems women are now more attracted to the convenience (convenient) of online shopping.7．We can，therefore，come to the conclusion (conclude) that nothing is so precious as freedom in the world.8．British English differs obviously from American English in pronunciation and spelling.9．It is not a good idea to miss meals and replace them with/by snacks.Ⅲ.单句改错1．If it is convenient with you today, please post the letter for me on your way home.with→to/for2．I think we should ban smoke in parks as well.smoke→smoking3．John is ill and I want to know who is going to take place of him. take_后加the4．Our school provides all the senior students with easy access to read books.read→reading5．He found it embarrassing to speak in front of so many people.embarrassing→embarrassed6．Finally, he reached to a conclusion that Tom wasn't the thief.去掉to7．During the meeting, hardly had he begun to speak when the audience interrupted with him.去掉with8．As far as I'm concern, I prefer beef to chicken.concern→concerned9．A medical team of PLA, consisted of 30 doctors, was sent to fight Ebola in Africa.consisted→consisting10．Occupying with her children, Mrs. White can't go shopping with us.Occupying→OccupiedⅣ.完成句子1．I always try to overcome difficulties.That_is_why I have always succeeded where others have failed.我总是努力克服困难，那就是我总是在别人失败的事情上成功的原因。

Unit 2The environment 自然与环境之(三)——环境保护[一积词汇见多识广][课内单词回扣](一)阅读词汇写其义1．debate n．& v i. 辩论；争论，讨论 2.recycle v t.& v i.回收利用3．greedy adj.贪婪的，贪心的 4.credit n．赞扬；信用5．arrest v t.& n．逮捕 6.clap v i.& v t.鼓掌，拍手7．conflict v i.冲突，抵触n．冲突，矛盾8.flood n．洪水v t.& v i.淹没9．range n．范围v i.& v t.变化；排列10.decade n．十年(二)表达词汇写其形1．duty n．责任，义务，本分 2.responsibility n．责任，职责3．quantity n．数量 4.willing adj.愿意的，乐意的5．decrease v t.& v i.& n．减少 6.measure n．措施v t.测量7．particular adj.专指的，特指的；特别的；讲究的，挑剔的(三)拓展词汇灵活用*1.production n．产量；生产→produce v t.& v i.生产，制造→product n．产品；产物2.belief n．看法；信念→believe v t.相信*3.environmental adj.环境的→environment n．环境4.operate v t.& v i.经营；动手术→operation n．操作；经营；手术→operator n．操作员；话务员5.arrival n．到来，抵达；到达者→arrive v i.到达*6.impress v t.使印象深刻→impression n．印象→impressive adj.给人印象深刻的7.illegal adj.非法的→legal adj.合法的→illegally ad v.非法地8.appreciate v t.欣赏，赞赏；感激；领会→appreciation n．欣赏；鉴别；感激9.electrical adj.电的，用电的→electric adj.电的；用电的；能发电的→electricity n．电；电学；电流*10.consume v t.消耗，耗费；消费→consumer n．消费者，用户，顾客→consumption n．消费*11.absorb v t.吸收；理解；使全神贯注→absorbed adj.全神贯注的；一心一意的；被吸收的→absorption n．专注；吸收用上面加*号的单词的适当形式填空1．This month, they have increased production and produced twice as many products as they did last month.2．My parents often impressed the importance of honesty on me when I was young, which leaves a deep impression on me.3．Good natural environment is vital to us. We shouldn't sacrifice environmental protection to promote economic growth.4．Experts advise consumers not to buy more groceries until they've already been consumed. This is called rational consumption.5．Absorbed in his writing, the writer always forgets to eat and drink. His absorption in work is admirable.[话题单词积累]1．environment /ɪn'vaɪrənmənt/ n．环境2．surroundings /sə'raʊndɪŋz/n．环境3．atmosphere /'ætməsfɪə(r)/ n. 大气4．pollute /pəluːt/v t. 污染5．waste /weɪst/ n. 废料；垃圾6．noisy /'nɔɪzi/ adj.嘈杂的；喧闹的7．smelly /'smeli/ adj. 有臭味的8．radiation /reɪdi'eɪʃn/ n. 放射，放射物9．emission /i'mɪʃn/ n. 排放10．rubbish /'rʌbɪʃ/ n. 垃圾；废物11．forbid /'fəbɪd/ v t. 禁止12．permit /'pəmɪt/ v t.& n. 许可，允许13．proper /'prɒpə(r)/ adj.恰当的，适当的14．punish /'pʌnɪʃ/ v t. 惩罚15．reduce /'rɪdjuːs/v t. 减少16．prevent /'prɪvent/ v t.阻止，防止，预防17．advocate /'ædvəkeɪt/ v t.拥护，支持，提倡18．substitute /'sʌbstɪtjuːt/v t. 取代19．environmental-friendly adj. 环保的20．crammed /kræmd/ adj. 拥挤的21．serious /'sɪəriəs/ adj. 严重的22．harmful /'hɑːmfl/adj. 有害的23．substance /'sʌbstəns/ n. 物质24．survive /sə'vaɪv/ v t.& v i. 幸免于，幸存25．survival /sə'vaɪv(ə)l/ n. 存活，幸存26．habitat /'hæbɪtæt/ n. 栖息地27．endangered /ɪn'deɪndʒəd/ adj. 濒危的28．extinct /ɪk'stɪŋkt/adj. 灭绝的29．decline /dɪ'klaɪn/ v i. 降低；下降30．protect /prə'tekt/ v t. 保护31．increase /ɪn'kriːs/v i. 增加32．decrease /dɪ'kriːs/v i. 减少33．creature /'kriːtʃə(r)/ n. 生物，动物34．wildlife /'waɪldlaɪf/ n. 野生动物35．species /'spiːʃiːz/n. 物种36．ecology /ɪ'kɔlədʒɪ/ n. 生态，生态学[二积短语顿挫抑扬][课内短语回扣](一)根据汉语写出下列短语*1.open_the_floor 自由发言 2.result_in导致*3.cut_back_on减少，削减，缩减 e_up用尽*5.run_out_(of)用完，耗尽 6.cause/do_damage_to 对……造成危害7.clean_up 打扫(或清除)干净8.queue_up排队等候*9.pick_out 找出，挑选*10.under_way进行中11.in/with_regard_to 关于，至于12.let_off排放13.in_use在使用中*14.in_particular尤其，特别15.do_one's_part尽自己的职责(二)用上面加*号的短语完成下列句子1．The food prices are going up, so we will cut_back_on the use of some expensive vegetables.2．Can you pick_out your friend from that group of people, who are chatting happily over there?3．We must act quickly because time is running_out. The manager said we must finish theproject on time.4．As for the kinds of stories, I am interested in most of them in general, and detective stories in_particular.5．The design of the new car is well under_way and you can expect to have it within a month.6．This concludes our presentation.Now let's open_the_floor for questions.[话题短语积累]1．carbon dioxide二氧化碳2．greenhouse effect 温室效应3．nuclear energy/power 核能4．let off waste gas 排放废气5．be/live in harmony with 与……和谐共处6．prevent/protect ...from 阻止/保护……7．have a(n) ...effect on ... 对……有……影响8．make proper use of 合理利用9．keep the balance of ... 保持……的平衡10．attach great importance to 十分重视11．be/become aware of 意识到12．on account of 因为，由于13．use up/run out of 用光，耗尽14．raise the awareness of 唤醒……的意识15．live a low-carbon life 过低碳生活16．call on/appeal to sb.to do sth.号召/呼吁某人做某事17．there is no denying/doubt that ...毫无疑问，毋庸置疑18．do harm to .../be harmful to ...对……有害[三积句式写作扮靓][课内句式仿写]1．倍数表达法：倍数＋what从句[例句]The world's population has grown by six times what it was in 1800.[仿写]现在全运会的运动员人数是十年前的两倍多。

课时练1阅读理解提速练[学生用书P298(单独成册)]Ⅰ阅读理解A(2019·长春质检)When the telephone rings late at night, most women guess it must be one of only four or five people calling. A sister? Maybe. An emergency? Possibly. A mother? Probably not at that time of night. Much more probably it is a close female friend calling to tell you that she is heartbroken because she has split up with her boyfriend again or perhaps simply that a good movie has just started on TV.At a time when families are spread far and wide and marriages often end in divorce, friendships are becoming more and more important. Erika, a 32­year­old lawyer, is strengthened by her ten­year friendship with her married friend Jane. “I was very sick one night, so I called Jane at about 3：00 a．m. to talk about it，”she says. “She was very supportive and even came over to take me to the doctor’s.”As American TV shows like Friends have become more popular, many of us are beginning to see the value of such friendships. TV shows like this tell us that our romantic relationships may not last, but we need to keep in touch with our close friends if we want to survive.With Erika’s family 200 miles away, it is Jane who keeps a spare set of keys to Erika’s apartment and waters her plants whenever she is away. “Having Jane around gives me a certain amount of freedom. It is not the kind of thing that you could ask anyone to do, but she knows I would do the same for her.” Jane, who may move to a different city soon, is worried about leaving such a support system of friends. “My friends have more to do with my life than my parents and, therefore, I don’t have to spend a lot of time explaining things to them. Friends are more up to date with what is happening.”【解题导语】本文是一篇议论文，以Erika与Jane的友谊和美剧Friends为例，讲述并论证友情十分重要的观点。

必修5 Unit 2 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．We should settle conflicts (冲突) in a peaceful way, thus friendship comes into being.2．This is a good chance to go abroad, so she is unwilling (不愿意的) to give it up.3．I think this was perhaps the most enjoyable (令人愉快的) occasion we have ever had at the White House.4．We spent the days going sightseeing (观光) and the evenings sitting in the bars drinking the local wine.5．He planned to deliver a speech to clarify (阐明) the situation.6．What you're saying now is not consistent (一致的) with what you said last week.7．Having quarrelled (争吵) with his wife about who should wash the dishes, he felt very upset.8．A policeman in uniform (制服) came up to the elderly woman, asking kindly what was happening to her.9．If it is true, the news about the famous actress will delight (使高兴) her fans all over the world.10．Divided (分成) into four groups, the whole class began to analyse the problem.Ⅱ.语境语法填空1．Last Sunday, my boss arranged ❶for me to pick up the experts at the airport, who were invited to come to our company to offer guidance. Unluckily, my car broke ❷down on the way.As a result, I had to ask my colleague, Mr.Wang, to drive his car to the airport to meet the experts. I know from this experience that it is necessary that I ❸should_keep (keep) my car in good condition from now on.2．We are more than ❶delighted (delight) to have the opportunity to visit the museum. It consists ❷of three parts, one for ❸historical (history) architecture, one for painting, and another for statues, all of which will bring us much delight. For ❹convenience_ (convenient), all of us will ❺be_divided (divide) into three groups to see them and don't break ❻away from your group in case you leave out important ❼attractions (attract). I wish all of us have an ❽enjoyable (enjoy) time.3．The British Museum consists of nine showrooms, one of ❶which is the showroom of China. When you look around the showroom, it may seem strange that Britain ❷should_have_taken (take) so many valuable things from China. When ❸visiting (visit) the British Museum, you had better make ❹a list of the things you want to see if you don't want to leave ❺out anything valuable.Ⅲ.语境改错1．文中共有5处错误，每句中最多有两处，请找出并改正。

必修5Unit 2The environment (B)题组一：基础巩固Ⅰ.语境语法填空AWith the 1．development(develop) of economy，the environment is getting worse and worse.It's time that we 2．should_take/took(take) measures to protect it.Firstly，it's very important to develop our sense of 3．responsibility(responsible)．Only when we realize the importance of protecting the environment are we willing to do our parts for it.Secondly，we should try to change our way of life.Thirdly，recycle the things that have been used.Above all，we should try our best to cut back on 4．pollution(pollute) of the environment in order to live a better life.BPeople are having a debate about 1．whether to develop the economy or protect the environment.In Lin Shuiqing's opinion，it is our duty 2．to_cut (cut) back on production and reduce the number of things we make and buy.While Qian Liwei thinks that businessmen are not greedy and they don't hide their 3．responsibilities (responsibility) either.As far as he 4．is_concerned (concern)，the people operating these factories are 5．deeply(deep) concerned about the environment，and we should give them more credit.In fact，many people are willing to pay a little 6．higher (high) price for things that are 7.friendly (friend) to the environment.Ⅱ.根据提示补全句子1．计算机已经改变了我们的工作和娱乐方式。

必修2 Unit 2 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．In London, every day I experienced a different adventure (冒险经历), from which my family and I learned much and enjoyed ourselves.2．We should use our schedule (计划) flexibly to balance our academic and spare time.3．Located in one of New Zealand's sunniest spots (地点), the area also has the best beaches in the country.4．A lot of people dived into the lake in search of the lost diamond (钻石) ring.5．Dublin has rocketed up the charts to become one of Europe's most popular tourist destinations (目的地) for city breaks.6．I admire those explorers who ventured forth to explore (探索) new lands.7．Young workers are more willing to desert (舍弃) jobs they don't like.8．Physically, it's tiring (累人的) to stare at a computer screen for too long.9．The countryside is bathed in brilliant (明亮的) sunshine.10．The dry air here makes me uncomfortable (不舒服的)．11．In summer, people like putting on dark glasses as a protection (保护) against the strong light.12．The old man is advancing (前进) slowly with the help of a stick.13．The thin atmosphere (大气层) means Mars gets very cold.14．Here's your bill, sir.It's 380 yuan altogether (总共)．Please check it.15．Due to over-fishing around the island, the supply (供给) of Nile perch is on the decrease, and people are starting to move to other fishing spots.Ⅱ.单句语法填空1．The children have made arrangements (arrange) for their trip to Hong Kong.2．First, people have been saying for more than a century that bike design has reached its limit, except for gradual advances (advance)．3．The ship sailed for Shanghai as it was scheduled (schedule)．4．In our view, children should be given more time to relax.5．I was nearly scared to death when hearing that big noise.6．I'm going to Africa this summer and I can't wait to see the elephants up close.7．She found her necklace buried (bury) beneath a pile of leaves.8．At the end of their meeting, it was announced that an agreement had been reached.9．When children grow up, their ideas will be out of harmony with their parents'.10．The key witness to the accident was offered police protection (protect) after she received death threats.Ⅲ.单句改错1．To be frank, every one hopes the work will be finished at advance.at→in2．Burying deep down in the earth, the dead forests rotted away and became coal.Burying→Buried3．She often spends some time reflecting her successes and failures.reflecting后加on 4．My aunt has arranged my uncle to meet my grandma at the bus station.arranged后加for5．An informer supplied the police to the names of those involved in the crime.to→with 6．When the car was first made, the design was viewed with highly original.with→as 7．Every evening after dinner, if not tiring from work, I will spend some time walking my dog.tiring→tiredⅣ.完成句子1．Every Friday afternoon, my mother arranged for my sister to pick me up at school.每个周五下午，妈妈安排我的姐姐去学校接我回家。

必修5 Unit 1 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．When his mother came in, he pretended (假装) to be doing his homework.2．The teacher remarked (评论) that the article was well written.3．By focusing (注重) on saving oil, water, paper, food and clothing, we are playing a part in cutting down on waste.4．There's no doubt that the consumers are still very sensitive (敏感的) to the price.5．Once you form the habit of blaming (指责) somebody or something else for a bad situation, you are a loser.6．Despite such a big difference in attitude (看法) towards what one eats, there is no doubt that people in the West regard the Chinese food as something special.7．He was even more cautious (谨慎的) than ever, and did his utmost to win the trust and favour of the superior.8．If you export nothing but raw materials, you will be at the mercy (怜悯) of world prices.9．Without pausing (停顿) for breath he walked straight to the office.10．She is new here, so naturally she is eager (热切的) for friendship.11．I knocked on the door and tried to wake up the children，but they didn't respond (回应) at all.12．He admitted (承认) having taken the money but promised never to do it again.13．I feel sorry for my behavior yesterday and please accept my sincere apology (道歉)．14．I will have to argue (争论) this out with you another time.15．He said he felt betrayed (背叛) by his friend John at first.Ⅱ.单句语法填空1．I thought we'd be late for the concert; however, we ended up_getting (get) there ahead of time.2．All her energies are_focused (focus) on her children and she seems to have little time for anything else.3．The passenger apologized to Angie O'Edema because he spoke very loudly on his phone.4．When the villagers were about to kill the bandit (山贼), he begged them tohave mercy on him.5．I'm eager to_improve (improve) my oral English. I think I can improve it with your help.6．To our amusement (amuse), they had a quarrel about such a small thing.7．I truly (true) hope that you can take my suggestions into full consideration.8．It's bad manners to remark on/upon the appearance of others.9．—Jack got drowned in the lake and was in hospital yesterday.—Sorry to hear that. I'm told he often goes swimming alone regardless of his mother's objection.10. You may rely on_it_that we will cooperate with you closely.11．There were so many cars in the street that I couldn't get through.Ⅲ.单句改错1．With his mind focusing on the things not related to his studies, his marks have fallen rapidly.focusing→focused2．I sincere hope you can give me a chance. I'm looking forward to your early reply.sincere→sincerely3．There is no doubt that it's you who should be blamed for the broken door.blamed→to_blame4．The teacher made a remark of the high grades the class received on the test.of→on/about5．Believe it or not, your attitude for money is more important than how much you have.for→to/towards6．Basing on the life in Shanghai in the 1930s, the film attracted a lot of attention.Basing→Based7．As a young man in a rapidly developed society, you should keep a pace with times.去掉keep后的a8．Once made out, the law must be carried out regardless to any difficulty.to→of 9．It's good manner to say hello to the old in the street.manner→manners 10．What surprised me was that he responded so quickly on my e­mail.on→to Ⅳ.完成句子1．You don't suppose it will be all right, do_you?你认为事情不会顺利的，对吗？2．If you don't follow my advice, you_will_end_up_in_failure.如果你不听我的建议，你最终会失败的。

必修5 Unit 5 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．Cut the lemon in half and squeeze (榨；挤) the juice out into the bowl.2．These men made themselves famous for their courage and bravery (勇敢)．3．They have earned lots of money, so I firmly (坚定地) believe that the business is a success.4．The heavy stress from the study was unbearable (难以忍受的), so Li Lin got depressed and decided to give up.5．The skin, whose functions are very complex, is our body's largest organ which acts as a barrier (屏障) against disease and the sun's harmful rays.6．One of the station staff saw he was in difficulty and came to his aid (援助)．7．The moment he graduated from college, he applied (申请) to be sent to the northwest of China.8．The difficulty is temporary (暂时的)．Once it's overcome, the project will go smoothly.9．Nowadays the purpose of school is to treat (对待) every student as an individual and to motivate them to reach their potential.10．The doctor said that my eyes would be a little swollen (肿胀的), so I needed to rest at home for a few days.Ⅱ.语境语法填空1．As is known to us, it is vital ❶to_know (know) some knowledge of first aid as danger lies everywhere and accidents happen from time to time.For example, we can get ❷cut (cut) by a ❸variety (various) of things.When your hand bleeds, treat it in time.If the cut is not serious, press it ❹firmly (firm) and soon it will stop ❺bleeding (bleed)．If the cut is deep, first tie a bandage around it and then ask a doctor to apply some medicine ❻to it.2．One day, Tom was driving his car to his company ❶when he saw a girl injured in a traffic accident. To make matters worse, the girl was bleeding.Jumping out of the car, Tom gave her first aid and then put her ❷in place, waiting for the ambulance. As a result, his knowledge of first aid made a ❸difference (differ) to the girl.3．One day Mike ❶was_studying (study) in his room when he heard a scream from the kitchen. He rushed out and found his mother got burned while ❷cooking (cook). Mike remembered what he had learned at school. First, he took off the clothes that his mother was wearing near the burns. Then, he put clean cloth in the cold water, ❸squeezed (squeeze) water out and placed it on the burned area over ❹and over again until the pain was not so bad. At last, he put his hands ❺on a dry and clean bandage and went to a doctor with his mother.Ⅲ.语境改错1．文中共有5处错误，每句中最多有两处，请找出并改正。

必修5 Unit 2 课下作业（一~三）课下作业（一）考点过关针对练Ⅰ.单词拼写1．I appreciated (欣赏) your generosity in the matter.2．The government has announced a package of measures (措施) to help the British film industry.3．Toy sales peaked just before Christmas and now are decreasing (减少)．4．There are, of course, questions which she will not be willing (愿意) to answer.5．Imbalance in global development has widened.International and local conflicts (冲突) keep breaking out.6．The trees on the mountains within my range (范围) of vision had all been felled.7．He is very particular (挑剔的) about the materials for the decoration.8．We debated (辩论) for several hours on it before taking a vote.9．If we learn to recycle (回收利用) materials, our natural resources will last longer.10．This medicine is poisonous if taken in large quantities (数量)．11．She gets so absorbed (全神贯注的) in doing something that she is unaware of things happening round her.12．Since the new management system was put into effect, the production (产量) of this factory has increased greatly.13．The court feels it has a responsibility (责任) to ensure that customers are not misled.14．Land may not be sold, leased, mortgaged (抵押) or illegally (非法地) transferred by any other means.15．I had always impressed (使印象深刻) upon the children that if they worked hard they would succeed in life.Ⅱ.单句语法填空1．My brother has a firm belief in the value of cold bath.2．Under the good care of the nurses, the boy is gradually recovering from his heart operation (operate)．3．The exchange program between the UK and China may affect various schools ranging (range) from kindergartens to high schools.4．I'd appreciate it if you could let me know in advance whether or not you will come.5．Please sum up very briefly and then we'll open the floor for questions and answers.6．She loves the song in particular, because her mother used to sing it.7．Production (product) of computers has increased double in the last few weeks.8．One of the questions under debate over education in many colleges is whether education is a lifetime study.9．Some countries have decided to cut back on the number of army, which surprises the world.10．This picture was taken twenty years ago. I wonder if you can pick out my younger brother.11．In the future, care for the environment will become very important as earth's natural resources run out.Ⅲ.单句改错1．I hold the firm belief only when everybody makes an effort can our society be warmer and more harmonious.belief后加that2．The classroom measured 30 feet long and 20 feet wide is used as a shelter for the survivors.measured→measuring3．Absorbing in his writing, the writer forgot to flick the ashes from his cigar. Absorbing→Absorbed4．Large quantities of sand was washed down the hillside by the rain.was→were 5．Their account of the event was in the conflict with ours.去掉第二个the 6．The doctor operated the patient at once and saved his life.operated后加on7．Food supplies in the flood­stricken area are running out of.We must act immediately before there's none left.去掉of8．I really appreciate work with someone who does such a good job.work→working 9．The earlier you set about your work, the soon you will finish it.soon→sooner 10．I am pleased with the results, and one for particular I reckon is as good as I can do.for→inⅣ.完成句子1．He feels that the media should_be_more_responsible_for what they report.他觉得媒体应该对他们报道的内容更负责任些。

高三英语第一轮复习练习Test2 (Module 5, Unit 2)一．完形填空You have waited 45 minutes for the valuable 10 minutes’ break between classes. But when the bell for the next class rings, you can’t __1_____ how quickly time has passed.If you are familiar with this_____2____ , you’ll know how time flies when you are having fun-and __3_____when you are bored. Now scientists have____4_ a reason why this is the case.Scans have shown that patterns of activity in the brain ____5____ according to how we focus on a task. When we are____6_____, we concentrate more on how time is passing. And this makes our brains_____7_____the clock is ticking more slowly.In an experiment______8____ by a French laboratory, 12 volunteers watched an image___9__researchers monitored their brain activity. The volunteers were told to_10_______ concentrate on how long an image appeared for, then ____11_____the color of the image, and thirdly, study both duration and color. The results showed that the ____12___ was more active when the volunteers paid ___13__ subjects.It is thought that if the brain is____14____ focusing on many aspects of a task, it has to __15_____its resources, and pays less attention to the clock. ___16_____, time passes without us really __17______it, and seems to go quickly. If the brain is not so active, it concentrates its___18____ energies on monitoring the passing of time. ___19______, time seems to drag.Next time you feel bored__20___, perhaps you should pay more attention to what the teacher is saying!1．A．guess B．learn C．believe D．doubt2．A．view B．point C．scene D．experience 3．A．drags B．stops C．backs D．gains4．A．thought over B．made upC．suggested D．come up with5．A．change B．develop C．grow D．slow6．A．sleepy B．bored C．excited D．active7．A．report B．think C．decide D．see8．A．produced B．carried C．tried D．performed9．A．so B．when C．while D．but10．A．partly B．quickly C．how D．first 11．A．remember B．focus on C．forget D．tell apart12．A researchers B. experiment C．clock D．brain13．A．much attention to B．more attention toC．attention to many D．attention to more14．A．busy B．likely C．ready D．sure15．A．focus B．gather C．reach D．spread 16．A．However B．Furthermore C．Therefore D．Finally 17．A．recognizing B．watching C．noticing D．counting 18．A．enough B．full C．right D．proper19．A．In fact B．As a result C．For example D．Instead20．A．in class B．with work C．in mind D．of lessons二．单项选择21. The collapse of the World Trade Centre has put US economy in a difficult _____.A. occasionB. caseC. situationD. background22. After Yang Liwei succeeded in circling the earth, _____ our astronauts desire to do iswalk in space.A．Where B. what C. that D. how23. He bought a book with the _______。