1、 Unit 1Art1studio n. 画室2.selfportrait n. 自画像3sketch n. 草图；素描 4.shade n. 暗影5fascinate vt. 迷住 6.impact n. 冲击；影响7creative adj. 有创造力的 8.vivid adj. 生动的；逼真的9religious adj. 宗教的 10.feature v. 以为特色11magnificent adj. 壮观的 12.splendid adj. 辉煌的13skyscraper n. 摩天大楼 14.cement n. 水泥15architect n. 建筑师 16.architectur
2、e n. 建筑学17cater vi. 迎合；投合 18.raw material 原材料19artificial stone 人造石 20.true to life 逼真的21on exhibition/display 在展览 22.sense of beauty 美感23be designed for. 为而设计24be shaped like 形状像1have an effect on对有影响2in terms of从角度看；关于；至于3bring sb. happiness给某人带来愉悦4be set in以为背景5come into existence形成6enrich ones l
3、ife丰富某人的生活7for sale供出售，待售8give up放弃9go through many difficulties经历许多困难10have a strong interest in对有着浓厚的兴趣1The exhibition gives local artists an opportunity to display their works.这次展览为当地艺术家提供了展示自己作品的机会。2My hobby is reading, which allows me to reduce my stress from my work.我的爱好是读书，这使我能减轻工作带来的压力。3Book
4、s are the source of knowledge and power from which I benefit a lot.书是知识和力量的源泉，我从中受益匪浅。1Peking Opera is not_just an art, but a symbol of traditional Chinese culture which deserves to be passed_down_from_generation_to_generation.京剧不仅是一种艺术，也是中国传统文化的象征，值得世代相传。2In_addition_to some basic tricks about Chin
5、ese painting, well learn its history and characteristics.除了学习中国国画的技巧，我们还将了解其历史和特点。3You can write about your understanding of Chinese culture as_well_as your personal experiences in China.你可以写你对中国文化的理解，也可以写你在中国的个人经历。 教材单词写准并记牢.重点单词1scholar n. 学者2allergic adj. 过敏性的；过敏的3committee n. 委员会4shadow n. 阴影；影子
6、5attempt n. 努力；尝试；企图 vt. 尝试；企图6specific adj. 确切的；特定的7figure n. 画像；身材；数字8effectively adv. 有效地9bunch n. 束；串10appeal vi. 有感染力；呼吁；求助 vt. 将上诉 n. 呼吁；恳求11reputation n. 名声；名誉12district n. 区；区域；行政区.拓展单词1faith n. 信任；信心；信念；承诺faithful adj. 忠实的；守信的faithfully adv. 忠实地；诚心诚意地2typical adj. 典型的；有代表性的type n. 类型；典型 v打字
7、typist n. 打字员typically adv. 一般；通常3evident adj. 明显的；明白的evidence n. 证据；证明；明显4adopt vt. 采用；采纳；收养adopted adj. 被收养的；被采用的adoption n. 收养；采用；通过5possess vt. 拥有；具有；支配possession n. (尤作复数)所有；财产6technique n. 技术；方法；技能technical adj. 技术的；工艺的7coincidence n. 巧合(的事)；(事情、口味、故事等)相合coincident adj. 同时发生的8predict vt. 预言；预告
8、；预测prediction n. 预言；预测predictor n. 预言者9aim n. 目标；目的 vi.& vt. 瞄准；(向某方向)努力aimless adj. 没有目标的；漫无目的的aimlessly adv. 漫无目的地10exhibition n. 展览；陈列；展览会exhibit v. 展览；展出；开展览会11preference n. 喜爱；偏爱prefer v. 更喜欢；偏爱12civilization n. 文明；文化；文明社会civilize v. 使文明；使开化；使教化civilized adj. 文明的；有礼貌的13signature n. 署名；签字sign v.
9、 签署；签名.阅读单词1sculpture n雕塑 2.gallery n美术陈列室；画廊3abstract adj. 抽象的；深奥的n摘要 4.fragrant adj. 香的；令人愉快的5conventional adj. 常规的；传统的；因循守旧的6aggressive adj. 敢作敢为的；侵略的；好斗的7contemporary adj. 当代的；同时代的 8.controversial adj. 争论的；争议的9ridiculous adj. 荒谬的；可笑的 10.permanent adj. 永久的；持久的11clay n. 黏土 12.marble n. 大理石13carve
10、vt. 雕刻；刻记 14.delicate adj. 脆弱的；容易生病的；精致的15geometry n. 几何学 16.fragile adj. 精细的；易碎的；脆弱的17flesh n. 肉；肌肉；肉体 18.avenue n. 林荫道；道路；大街19visual adj. 视觉的；看得见的高考与教材1.(2019全国卷)Every year about 40,000 people attempt to_climb (climb) Kilimanjaro, the highest mountain in Africa.2(2017北京卷)If you dont understand som
11、ething, you may research, study, and talk to other people until you figure it out.3(2017全国卷)Both of us had the qualities and virtues that are typical of American actors.4(2017北京卷)Now we have the most direct evidence (evident) yet that he is right. 教材短语写准并记牢1.by_coincidence 巧合地2a_great_deal_of 大量3on_
12、the_other_hand (可是)另一方面4attempt_to_do_sth. 尝试做某事5have_a_preference_for 更喜欢；有的偏好6concentrate_on 集中；重视7convince_sb._of_sth. 使某人相信某事8adopt a(n).attitude (to) 采取一种态度9aim_at 瞄准10appeal_to (对某人)有吸引力；(使某人)感兴趣11in_the_flesh 活着的；本人12as_a_consequence 因此；结果13be_allergic_to 对过敏14figure_out 理解；弄明白15scores_of 大量；
13、许多高考与教材1.(2019江苏卷)Naomi managed to figure_out (理解；弄明白) 16 of Steves favorite, and most personal, songs.2(2017全国卷)Im sure it will appeal_to (吸引) you, for youve been enthusiastic about sports.3(2017全国卷)She has turned down several invitations to star at shows in order to concentrate_on (集中) her studies
14、. 教材句式写准并记牢1.without引起的含蓄虚拟条件句Without the new paints and the new technique, we would_not_be able to see the many great masterpieces for which this period is famous.没有新的颜料和新的(绘画)手法，我们就不能看到很多这一时期著名的杰作。2表示方位的介词短语位于句首时句子用完全倒装Among_the_painters who broke away from the traditional style of painting were_t
15、he_Impressionists,_who lived and worked in Paris.在这些突破传统绘画风格的画家中就有生活和工作在巴黎的印象派画家们。3序数词后用不定式作定语The Impressionists were the first painters to_work_outdoors.印象派画家是第一批室外写景的画家。4would rather.than句型Many art lovers would_rather_visit this small art gallery than any other in New York.许多艺术爱好者宁愿参观这个小艺术馆而不参观纽约其
16、他的艺术馆。高考与教材1.(2019江苏卷)What a pity! You missed the sightseeing, or we_would_have_had_a_good_time_together (我们本应该在一起度过一段愉快时光的)2(2018全国卷)To begin with, a new stadium has been built up, becoming the_new_landmark_in_our_school 成为我们学校的新地标(landmark)3(2017浙江卷)I do hope that you could join us; this_is_becaus
17、e (这是因为) Green Hill is such a fun place to relax.4(2017北京卷)Without_immediate_medical_care (如果没有及时的医疗护理), Paris would die.1名词less 后缀变形容词aimaimless 无目的的homehomeless 无家可归的limitlimitless 无限的hopehopeless 无希望的carecareless 粗心大意的endendless 无穷的2常见英语反义形容词面面观abstract 抽象的concrete 具体的active 主动的passive 被动的permane
18、nt 永久的temporary 暂时的contemporary 当代的ancient 古代的fragile 易碎的solid 坚固的negative 消极的positive 积极的pessimistic 悲观的optimistic 乐观的3“inthen.”短语一览in the flesh 亲自in the air 在流传中；在空中in the distance 在远处in the meanwhile 与此同时in the way 挡道in the end 最后in the least 丝毫；极少高频词汇精讲1faith n. 信任；信心；信念Art is influenced by the
19、customs and faith of a people.艺术受一个民族生活习俗和信仰的影响。(1)have/lose faith in 对有/失去信心keep/break faith with 信守/违背对的承诺(2)faithful adj. 忠实的；守信的faithfully adv. 忠实地；诚心诚意地be faithful to sb. 忠实于某人be faithful to ones promise 信守诺言(1)单句语法填空Besides, it is also very important that friends should be faithful (faith) to
20、each other.History is the best teacher. It faithfully (faith) records the development path of each country and foretells the future to us.(2)完成句子If we have_faith_in ourselves, nothing can defeat us.如果我们自信的话，就没有什么可以打败我们。He still has great talent, but he has_lost_faith_in himself.他仍然很有天赋，但是他已经丧失了信心。2a
21、im n目标；目的；瞄准 vi. & vt.瞄准；对准；旨在；(向某方向)努力During the Middle Ages, the main aim of painters was to represent religious themes.在中世纪，画家们的主要目的是把宗教的主题表现出来。(1)achieve ones aim 达到某人的目的；实现某人的目标take aim at 向瞄准without aim 漫无目的地with the aim of 以为目标；意在/旨在(2)aim at/for 针对；瞄准；目的在于aim sth. at sb./sth. 用某物朝向/瞄准某人或某物ai
22、m to do sth. 意欲/企图/旨在做某事意欲/企图/旨在做某事(3)aimless adj. 漫无目的的aimlessly adv. 漫无目的地(1)单句语法填空Ann was wandering along the street aimlessly (aim) when she heard someone calling her name from the other side of the street.The actions aim to_fix (fix) the global economic crisis and problems that led to it.She st
23、arted the organization with the aim of helping local people.In the newspaper of our school there is a column called “Foreign Cultures”， aiming (aim) to introduce American customs.(2)完成句子This activity aims/is_aimed_at_improving the students ability of listening and speaking.这一活动目的是提高学生们的听说能力。3.typica
24、l adj. 典型的；有代表性的A typical picture at this time was full of religious symbols, which created a feeling of respect and love for God.这个时期典型的绘画充满了宗教符号，这些画表达了对上帝的敬重和爱戴。(1)be typical of 是典型的；是的特点It is typical of sb. to do sth. 做某事是某人的特点；某人一向如此(做某事)(2)typically adv.典型地；有代表性地；一向如此地；不出所料；果然type n类型；种类v打字(1)单
25、句语法填空Nowadays it is typical of a young generation to take it for granted that parents should meet whatever they desire.Women in developing countries typically (typical) have their first child when they are very young.(2)完成句子Its about a Chinese romantic story, typical_of_Chinese_culture.那是一个具有典型中国文化特
26、色的浪漫故事。4.adopt vt.收养；领养；采纳；采用People began to concentrate less on religious themes and adopt a more humanistic attitude to life.人们开始较少关注宗教主题而采取一种更人性化的生活态度。(1)adopt a child领养孩子adopt a policy/ones idea/attitude采取一项政策/思想/态度adopt a method/measures采用方法/采取措施(2)adopted adj.收养的adopted son/daughter 养子/养女；义子/义
27、女adoption n收养；采取(1)单句语法填空Pauls mother had him adopted (adopt) because she couldnt bring him up herself.It is said that the headmaster has_adopted (adopt) our suggestions.(2)完成句子If you want to improve your situation, you must adopt_a_positive mental attitude.如果你打算改变自己的境遇，你必须采取一种积极的心态。5.possess vt.拥有；
28、具有；支配Rich people wanted to possess their own paintings, so they could decorate their superb palaces and great houses.富人们也想拥有属于他们自己的画作，以用来装点他们的宫殿和豪宅。(1)be possessed of具有(品质、能力等)(2)possession n. (尤作复数)所有；财产be in possession of拥有(主语为人)be in the possession of (某物)为(某人)所拥有/控制take possession of占有come into
29、sb.s possession为某人所拥有注意 in possession of 表主动，意为“拥有；占有”，主语通常为表示人的词语；in the possession of 表被动，意为“被占有”， 主语通常为表示物的词语。(1)单句语法填空The company Tom is in possession of once belonged to his uncle.Many people lost their homes and all their possessions (possess) during the war.(2)完成句子That country took_possession
30、_of the island late in the sixteenth century.这个岛屿16世纪末被那个国家占有。6a great deal 大量；许多In the late 19th century, Europe changed a great deal, from a mostly agricultural society to a mostly industrial one.19世纪后期，欧洲发生了巨大的变化，从一个以农业为主的社会变成了以工业为主的社会。(1)a great deal “大量；许多”，是一个名词短语。a great deal of 后接不可数名词，作主语时，
31、谓语动词用单数(2)a great/good deal 也可以作副词短语，可用于修饰形容词、副词比较级，还可以修饰动词作状语(1)单句语法填空The changes this time may be limited, but they are a great deal better (good) than no movement at all.In the past five years a great deal of money has_been_spent (spend) improving the environment of the school.(2)完成句子In the cours
32、e of our trip, we have learned a_great_deal in all the places we visited.在参观的过程中，我们在我们参观的所有地方都学到了很多东西。The police gained a_great_deal_of useful information about the organization.警方收集到了大量关于该组织的有用信息。7attempt n& vt.尝试；努力；试图Instead, let him attempt to solve things by himself.相反，让他自己试着来解决问题。(1)attempt to
33、 do sth.尝试(做)某事(2)make an attempt to do/at doing sth.试图做某事at ones first attempt首次尝试(3)attempted adj.尝试的；企图的an attempted murder/escape谋杀/逃跑未遂(1)单句语法填空I passed my driving test at the first attempt.He attempted to_escape (escape) from the prison but failed.The fisherman was put into prison last night,
34、charged with attempted (attempt) murder.(2)完成句子If you fail at_the_first_attempt,_there is no need to care about that.如果你第一次尝试失败的话，也没必要担心。8.on the other hand 另一方面On the other hand, some paintings of modern art are so realistic that they look like photographs.而另一方面，有些现代派的艺术作品确实那么写实，看上去就像一幅幅照片。(1)on th
35、e one hand.; on the other (hand). 一方面；另一方面(却)(引出不同的，尤指对立的观点、思想等)(2)for one thing.，(and) for another.一来，二来(常被用来列举一些理由)(3)first(ly).，second(ly). 第一，第二(1)单句语法填空On the one hand I admire his gifts, but on the other hand I distrust his judgement.For one thing, you must make a promise; for another,_you sho
36、uld act at once.(2)完成句子On_the_one_hand I want to sell the house, but on_the_other_hand I cant bear the thought of moving.一方面我想把房子卖掉，但另一方面我又不愿搬家。9predict vt. 预言；预告；预测Who can predict what painting styles there will be in the future?谁能预言将来会有什么样的绘画艺术风格？(1)predict sth./that. 预言；预测Its predicted that. 据预测/
37、预报；人们预言/预测(2)prediction n. 预言；预测；预报；预告make a prediction for 对做出预言/预测(1)单句语法填空It is now still impossible to_predict (predict) when and where an earthquake will break out.He was unwilling to make a prediction (predict) about which books would sell well in the coming year.(2)完成句子It_is_predicted_that Ch
38、inas migrant population will be over 200 million by 2020, due to the countrys growing rate of urbanization.由于中国城市化的速度不断提高，到2020年，中国的流动人口预计将超过2亿。10.appeal vi.有感染力；呼吁；求助 vt.将上诉 n呼吁It will appeal to those who love Impressionist and PostImpressionist paintings.展览将吸引印象派和后印象派作品的爱好者。(1)appeal to(对某人)有吸引力；(
39、使某人)感兴趣appeal to sb. for sth./to do sth.对有吸引力；向某人呼吁/恳求appeal for恳求；呼吁(2)make/launch an appeal to sb.向某人发出呼吁(3)appealing adj.有吸引力的；有感染力的(1)单句语法填空The idea of living abroad do not appeal to everybody.We made an appeal to the villagers for money to build the bridge.We should appeal to people to_save (sa
40、ve) things that nature offers to us as well.There was a sense of humour to what he did that I found very appealing (appeal)(2)完成句子It was the good research environment that appealed_to domestic and overseas scholars for visits or study. 是良好的科研环境吸引了大量的国内外优秀学者前来访问或学习的。重点词汇点拨1by coincidence 巧合地；碰巧；凑巧by
41、pure/a strange coincidence纯属巧合/巧得出奇It is a coincidence that. 巧合的是What a coincidence! 真巧！By_coincidence,_my best friend and I ended up working at the same advertising firm.纯属巧合，我最好的朋友和我竟在同一家广告公司工作。What_a_coincidence that I was just going to see him when he came!我正要去看他，他就来了，真是巧啊！2figure n数字；图形；人物；身材；画
42、像 vt.计算；认为；描绘(1)keep ones figure 保持体形have a good figure 身材好a political/public figure 一位政治/公众人物(2)figure out 理解；想出；计算出I want you to pursue your dreams and figure_out who you are and who you want to be.我希望你追逐自己的梦想，找到自我并明确你想成为的人。Even to this day, Lincoln is regarded as one of the most inspiring figures
43、 in the world.即使直到今天，林肯仍被认为是世界上最令人鼓舞的人物之一。3preference n喜爱；偏爱have a preference for.偏爱in preference to. 优先于show/give preference to. 优先考虑He is keen on all kinds of new things and has a preference (prefer) for computer.He preferred to_study (study) chemistry rather than physics at university.典型句式精析1With
44、out the new paints and the new technique, we would not be able to see the many great masterpieces for which this period is famous.没有新的颜料和新的(绘画)手法，我们就不能看到很多这一时期著名的杰作。(1)句中介词短语without the new paints and the new technique取代了if引导的非真实条件状语从句，主句使用了虚拟语气，表示所说内容与事实相反(2)除了without之外，but for, otherwise, but等也常用来
45、表示虚拟条件(1)单句语法填空Without the air to hold some of the suns heat, the earth at night would_be (be) freezing cold, too cold for us to live.Without the teachers praise, I wouldnt have_made (make) so much progress.(2)完成句子If_it_hadnt_been_for/Without the doctors care, I wouldnt have recovered so soon.要不是医生的
46、照顾，我不会康复得这么快。2.Among the painters who broke away from the traditional style of painting were the Impressionists, who lived and worked in Paris.在那些突破传统画法的画家中有生活和工作在巴黎的印象派画家。(1)out，in，down，up，away，here，now，then，there等表示方位、地点和时间的副词置于句首，且主语是名词时，句子用完全倒装。(2)表示地点的介词短语置于句首，且主语是名词时，句子用完全倒装。(3)作表语的形容词、分词短语提到系
47、动词前面时，句子也用完全倒装，即“形容词/分词系动词主语”结构。(4)代词such置于句首，且在句中作表语时，句子用完全倒装。注意 在(1)、(2)两种情况中，若主语是代词，则不用倒装。(1)单句语法填空We were on our way home, but suddenly down poured (pour) the rain!Among the crises that face humans is (be) the lack of natural resources.(2)完成句子In front of the stadium stood_many_students holding f
48、lowers waiting for the arrival of the honored guests.体育馆门前站着很多手拿鲜花的学生，他们在等待贵宾的到来。Present at the meeting were_some_scientists from China.一些来自中国的科学家出席了会议。Such_is_our_lively_city,_which you are welcome to visit whenever at your convenience.这就是我们这座充满活力的城市，只要您方便，随时欢迎来参观。.单词拼写1The Chinese civilization (文明
49、) is one of the oldest in the world.2The artist combines different techniques (技术) in the same painting.3It was ridiculous (荒谬的) that this should be so difficult to say.4We may talk of beautiful things, but beauty itself is abstract (抽象的)5The museum has several lifesized sculptures (雕塑) of people an
50、d animals.6She has always had a high reputation (声誉) for her excellent short stories.7In deference to our host I decided not to challenge his controversial (争议的) remarks.8The tall tower adds to the visual (视觉的) impact of the building.9An agreement seems to be impossible because the majority of the c
51、ommittee (委员会) members are against it.10“Life is fragile (脆弱的), but its meant to be enjoyed.” as a saying goes.单句语法填空1I missed the train and consequently (consequent) was late for work.2When you get something wrong, it can shake your belief (believe) in yourself.3She was rewarded for her 30 years fa
52、ithful (faith) service with the community.4Among all the birthday gifts is_included (include) a DIY card, which I like best.5Mahatma Gandhi was both a political and a religious (religion) figure in Indian history.6The boys made an attempt to_leave (leave) for camping but were stopped by their parent
53、s.7The outcome of the election was correspondent with my prediction (predict)8As for diet, Michael chooses vegetables and fruit in preference (prefer) to any kind of meat.9It is reported that most adopted (adopt) children want to know who their natural parents are.10Two years ago he went to the USA
54、and wanted to live permanently (permanent) there.11The police have found no evidence (evident) of a terrorist linked with the murder.12Zhang Mengxue is the first Chinese athlete to_win (win) the gold medal in the 31th Olympic Games.13Without your help, we would have been in trouble that day.14An exh
55、ibition (exhibit) marking the 90th anniversary of the founding of our school is being put on in our school hall.15It is typical of him to think about helping others in this way.选词填空concentrate on，depend on，by coincidence，appeal to，as a consequence，on the other hand，figure out，a great deal1Im sure it
56、 will appeal_to you, for youve been enthusiastic about sports.2It rained yesterday and as_a_consequence the match was canceled.3Supposing that you are right, well make a_great_deal of money from the project.4On (the) one hand theyd love to have kids, but on_the_other_hand,_they dont want to give up
57、their freedom.5We cant figure_out why quite a number of insects, birds, and animals are dying out.6By_coincidence I will go too. Lets go together.7I find it hard to concentrate_on my studies with some people having small talks around me.8In reality, it is our joint efforts that we can depend_on to c
58、hange our motherland for the better.完成句子1Without your help, we couldnt_have_finished the assignment before the deadline.如果不是你帮忙，我们是不可能在截止日期前完成任务的。2It_is_predicted that our country will face a stronger climate warming trend in the future.据预测，我国未来将面临更加严重的气候变暖趋势。3On (the) one hand, computers improve th
59、e working efficiency; on_the_other_hand,_they also bring about some new problems.一方面，计算机提高人们的工作效率；另一方面，也引起一些新的问题。4Among the guests invited to the party is/was_Professor_Li,_whose works appeal to readers both at home and abroad.李教授在受邀参加舞会的客人之中，他的作品吸引了国内外的读者。5There are many kinds of birds in Australia
60、, and over 140 species of snakes, many_of_which_are extremely dangerous.澳大利亚有许多种鸟和140多种蛇，其中的许多都是极度危险的。.课文回顾As is known to all, art _1_ (influence) by the customs and faith of a people. Styles in Western art have changed many times.In the 5th century, the art of the Middle Ages came into being and th
61、e main aim of _2_ (paint) was to represent religious themes. _3_a result, some pictures at this time were full of religious symbols, _4_ (create) a feeling of respect and love for God. During the Renaissance, people began to concentrate _5_ (little) on religious themes and adopt a more humanistic at
62、titude _6_ life. In the late 19th century, some painters became the Impressionists. And they were the first painters _7_ (paint) outdoors. Paintings can reflect the _8_ (develop) of civilization, and it is interesting to predict _9_ styles of paintings there will be in the future. Why not try to vis
63、it some art galleries _10_ (appreciate) different styles of paintings?1is_influenced2.painters3.As4.creating5.less6to/towards7.to_paint8.development9.what10to_appreciate.教材写作假如你是某中学的学生李华，请你给校委员会写一封信，就开办艺术画廊给出自己的建议及理由。内容包括：1建议开办一个校园艺术画廊，展示在校学生自己的作品；2画廊可以给学生提供一个展示自我的平台。注意：1.词数80左右；2可以适当增加细节，以使行文连贯。Dea
64、r_Committee_members，I_wish_to_make_a_suggestion_about_starting_a_school_art_gallery,_which_I_think_will_appeal_to_a_number_of_students_in_our_school.There_are_many_students_who_have_a_preference_for_painting_in_our_school._The_school_art_gallery_can_provide_these_students_with_a_very_good_platform_t
65、o_display_their_own_paintings._If_you_were_to_offer_such_an_opportunity_to_the_students_who_are_fond_of_art,_I_believe_the_art_exhibition_would_work_out_well.I_would_be_more_than_happy_if_my_suggestion_could_be_adopted.Yours_faithfully，Li_Hua.课文概要写作根据课文内容写一篇60词左右的内容概要。The_styles_of_Western_art_have_
66、changed_many_times.(要点1)During_the_Middle_Ages,_the_main_aim_of_painters_was_to_represent_religious_themes_and_show_respect_and_love_for_God.(要点2)_During_the_Renaissance,_people_focused_more_on_humans_and_less_on_religion._Artists_painted_people_and_nature_as_they_really_were.(要点3)In_the_late_19th_century,_the_Impressionists_were_the_first_to_paint_outdoors,_whose_paintings_were_not_detailed.(要点4)The_Impressionist_paintings_were_thought_to_be_the_beginning_of_modern_art._Some_modern_art_is_abstract_while_some_is_realistic.(要点5)
