What Where How Many Combining Object Detectors and CRFs

cv考试题目一、选择题（每题2分，共20分）1. 在计算机视觉中，下列哪项技术主要用于目标检测？A. 边缘检测B. 特征匹配C. 卷积神经网络D. 立体匹配2. 深度学习在计算机视觉领域的应用不包括以下哪项？A. 图像分类B. 语音识别C. 目标跟踪D. 场景重建3. 以下哪个算法不是用于图像分割的？A. K-means聚类B. 水平集方法C. 深度置信网络D. 随机森林4. 在计算机视觉中，HOG特征主要用于描述什么？A. 颜色分布B. 纹理信息C. 运动信息D. 形状信息5. 以下哪个是计算机视觉中的三维重建技术？A. 立体匹配B. 特征点匹配C. 光流法D. 直方图均衡化6. 在计算机视觉中，SIFT算法主要用于什么？A. 目标检测B. 目标跟踪C. 特征点提取D. 图像配准7. 以下哪个不是计算机视觉中的常用数据集？A. MNISTB. ImageNetC. CIFAR-10D. COCO8. 在计算机视觉中，以下哪个算法是用于图像增强的？A. 直方图均衡化B. 非极大值抑制C. 拉普拉斯算子D. 霍夫变换9. 以下哪个是计算机视觉中的图像去噪算法？A. 高斯滤波B. 拉普拉斯算子C. 梯度下降D. 支持向量机10. 在计算机视觉中，以下哪个算法是用于图像配准的？A. 特征点匹配B. 直方图匹配C. 霍夫变换D. 非极大值抑制二、填空题（每题2分，共20分）1. 在计算机视觉中，______算法是一种用于特征点检测和描述的算法。

2. 深度学习中的卷积神经网络（CNN）通常用于处理______数据。

3. 在目标检测任务中，______网络是一种常用的深度学习架构。

4. 图像分割的目的是将图像划分为多个______区域。

5. 在计算机视觉中，______是一种用于图像配准的技术，它通过匹配图像中的特征点来实现。

6. 计算机视觉中的______算法可以用于检测图像中的直线。

7. 深度学习中的______层是卷积神经网络中的基本构建块。

CATTI三级笔译综合能力考试试题及答案解析三一、Vocabulary Selection本大题20小题．每题1.0分;共20.0分..In this part; there are 20 incomplete sentences. Below each sentence; there are four words or phrases respectively marked by letters A; B; C and D. Choose the word or phrase which best completes each sentence. There is only one right answer.第1题Marketing is ______ just distributing goods from the manufacturer to the final customer.A rather thanB other thanC bigger thanD more than第2题The magician picked several persons ______ from the audience and asked them to help him with the performance.A by accidentB at randomC on occasion第3题English language publications in China are growing in volume and ______.A circulationB rotationC circumstanceD appreciation第4题Dust storms most often occur in areas where the ground has little vegetation to protect of the wind.A from the effectsB it the effectsC it from the effectsD the effects from it第5题On turning the comer; they saw the path ______ steeply.A departingB descendingC decreasing第6题Most nurses are women; but in the higher ranks of the medical profession women are aA scarcityB minorityC minimum第7题With an eighty-hour week and little enjoyment; life must have been very for the students.A hostileB anxiousC tediousD obscure第8题Container-grown plants can be planted at any time of the year; but ______ in winter.A should beB would beC preferredD preferably第9题Hydroponics ______ the cultivation of plants without soil.A doesB isC doD are第10题In the eighteenth century; the town of Bennington; Vermont; was famous for pottery.A it madeB itsC the makingD where its第11题To impose computer technology ______ teachers is to create an environment that is not conducive to learning.A withB toC inD on第12题Good pencil erasers are soft enough not ______ paper but hard enough so that they crumble gradually when used.A by damagingB so that they damageC to damageD damaging第13题Both longitude and latitude ______ in degrees; minutes and seconds.A measuringB measuredC are measuredD being measured第14题Our flight to Guangzhou was ______ by a bad fog and we had to stay much longer in the hotel than we had expected.A delayedB adjournedC cancelledD preserved第15题______ of his childhood home in Hannibal; Missouri; provided Mark Twain with the inspiration for two of his most popular novels.A RememberingB MemoriesC It was the memoriesD He remembered第16题Most comets have two kinds of tails; one made up of dust; ______ made up of electrically charged particles called plasma.A one anotherB the otherC other onesD each other第17题We have had to raise the prices of our products because of the increase in the cost of materials.A primitiveB roughC originalD raw第18题______ a language family is a group of languages with a common origin and similar vocabulary; grammar; and sound system.A What linguists callB It is called by linguistsC Linguists call itD What do linguists call第19题______ get older; the games they play become increasingly complex.A ChildrenB Children; when theyC As childrenD For children to第20题Whenever the government increases public services; ______ because more workers are needed to carry out these services.A employment to riseB employment risesC which rising employmentD the rise of employment二、Vocabulary Replacement本大题15小题．每题1.0分;共15.0分..This part consists of 15 sentences in which one word or phrase is underlined. Below each sentence; there are four choices respectively marked by letters A; B; C and D. You are to select the ONE choice that can replace the underlined word without causing any grammatical error or changing the principal meaning of the sentence. There is only one right answer.第1题Public relations practice is the deliberate; planned and sustained effort to establish and maintain mutual understanding between an organization and its public.A completeB relatedC intentionalD active第2题The service economy doesn't suggest that we convert our factories into laundries to survive.A implyB persuadeC hurlD transform第3题The ultimate cause of the Civil War was the bombardment of Fort Sumter.A onlyB finalC trueD special第4题Most species of this plant thrive in ordinary well-drained garden soil and they are best planted 8cm deep and 5cm apart.A develop wellB grow tallerC matureD bear fruit第5题Jim was a stout old gentleman; with a weather-beaten countenance.A bodyB skinC shoulderD passionate interest第6题The use of the new technology will have a profound effect on schools.A negativeB positiveC strongD useful第7题He has a touch of eccentricity in his composition.A essayB writingC characterD manner第8题The most striking technological success in the 20th century is probably the computer revolution.A profitableB productiveC prominentD prompt第9题Shellfish give the deceptive appearance of enjoying a peaceful existence; although in fact life is a constant struggle for them.A misleadingB calmC understandableD initial第10题Motivation is the driving force within individuals that impels them to action.A impedesB interferesC holdsD pushes第11题Scientific evidence from different disciplines demonstrates that in most humans the left hemisphere of the brain controls language.A groups of followersB yearsC countriesD fields of study第12题If we look at the Chinese and British concepts of hospitality; we find one major similarity but a number of important differences.A hostilityB friendlinessC mannerD culture第13题It was rather strange how the habits of his youth clung to him still. He was 72.A stuck toB turnedC led toD gave way to第14题In just three years; the Net has gone from a playground for the local people to a vast communications and trading center where millions swap information or do deals around the world.A businessB shoppingC chattingD meeting第15题No hero of ancient or modem days can surpass the Indians with their lofty contempt of death and the fortitude with which they sustain its cruelest affliction.A regardB courageC lossD trick三、Correcting Grammatical Errors本大题14小题．每题1.0分;共14.0分..This part consists of 15 sentences in which there is an underlined part that indicates a grammatical error Below each sentence; there are four choices respectively marked by letters A; B; C and D. You are to select the ONE choice and replace the underlined elements so that the error is erased and corrected. There is only one right answer.第1题The first recorded use of natural gas to light street lamps it was in the town of Frederick; New York; in 1825.A wasB isC it isD were第2题Furniture makers use glue to hold joints together and sometimes to reinforce it.A itsB fastC hardD them第3题All living creatures pass on inherited traits from one generation to other.A the otherB anotherC othersD other one第4题Unlike competitive running; race walkers must always keep some portion of their feet in contact with the ground.A runB runnerC runnersD running race第5题The eastern bluebird is considered the most attractive bird native of North America by many bird-watchers.A nativeB native withC native byD native to第6题Machines that use hydraulic pressure including elevators; dentist chairs; and automobile brakes.A excludeB excludingC includeD are included第7题All root vegetables grow underground; and not all vegetables that grow underground are roots.A butB orC asD thus第8题All mammals have hair; but not always evident.A but it is notB but it isC but they are notD but they are第9题A promising note is a written agreement to pay a certain sum of money at some time future.A time futuresB futuresC futures timeD future time第10题Not much people realize that apples have been cultivated for over 3;000 years.A Not manyB Not enoughC Without manyD No many第11题Although the social sciences different a great deal from one another; they share a common interest in human relationship.A moveB differC changeD varies第12题The hard; out surface of the tooth is called enamel.A outsideB appearanceC outerD hiding第13题The earliest form of artificial lighting was fire; which also provided warm and protection.A hotB sunshineC warmthD safe第14题New York City surpassed the other Atlantic seaports in partly because it developed the best transportation links with the interior of the country.A partB partialC partnerD parting四、Reading Comprehension共50小题;共50.0分In this section you will find after each of the passages a number of questions or unfinished statements about the passage; each with four A; B; C and D suggested answers or ways of finishing. You must choose the one which you think fits best.第1题Phyllis Wheatley is regarded as America's first black poet. She was born in Senegal; Africa; about 1753 and brought to America aboard a slave ship at about the age of seven. John and Susannah Wheatley bought her for three pounds at a slave auction in Boston in 1761 to be a personal servant of Mrs. Wheatley. The family had three other slaves; and all were treated with respect. Phyllis was soon accepted as one of the family; which included being raised and educated with the Wheatley's twin 15-year-old children; Mary and Nathaniel. At that time; most females; even from better families; could not read and write; but Mary was probably one of the best educated young women in Boston. Mary wanted to become a teacher; and in fact; it was Mary who decided to take charge of Phyllis's education. Phyllis soon displayed her remarkable talents. At the age of twelve she was reading the Greek and Latin classics and passages from the Bible. And eventually; Mrs. Wheatley decided Phyllis should become a Christian. At the age of thirteen Phyllis wrote her first poem. She became a Boston sensation after she wrote a poem on the death of the evangelical preacher George Whitfield in 1770. It became common practice in Boston to have "Mrs. Wheatley's Phyllis" read poetry in polite society. Mary married in 1771; and Phyllis later moved to the country because of poor health; as a teacher and caretaker to a farmer's three children. Mary had tried to interest publishers in Phyllis's poems but once they heard she was a Negro they weren't interested.Then in 1773 Phyllis went with Nathaniel; who was now a businessman; to London. It was thought that a sea voyage might improve her health. Thirty-nine of her poems were published in London as Poems on Various Subjects; Religious and Moral. It was the first book published by a black American. In 1775 Phyllis wrote a poem extolling the accomplishments of George Washington and sent it to him. He responded by praising her talents and inviting her to visit his headquarters. After both of her benefactors died in 1777; and Mary died in 1778; Phyllis was freed as a slave. She married in 1778; moved away from Boston; and had three children. But after the unhappy marriage; she moved back to Boston; and died in poverty at the age of thirty.What does the passage mainly discussA Slavery and the treatment of the black people in America.B The Wheatley family; including their slaves.C The life of America's first black poet.第2题The underlined word "respect" in Paragraph 1 is closest in meaning toA considerationB disregardC punishment第3题According to the passage; how many slaves did the Wheatley's haveA One.B Two.C Three.D Four.第4题According to the passage; an unusual feature of Mary was that sheA was not much older than PhyllisB wanted to become a teacherC was comparatively well educatedD decided to take charge of Phyllis's education第5题The underlined word "eventually" in Paragraph 1 is closest in meaning toA ultimatelyB slowlyC reluctantlyD gradually第6题Which of the following is NOT true about Phyllis in the early 1770s A She wrote her first poem when in her teens.B She married in 1771.C She became a teacher.D She was able to get her poems published.第7题The underlined word "they" in Paragraph 2 refers to ______.A publishersB poemsC childrenD black people第8题It can be inferred that Phyllis's trip to England with Nathaniel in 1773 ______.A did not improve her healthB was for business reasonsC led to books of her poems being available in AmericaD led to the publication of her poems because the English were more interested in religious and moral subjects第9题The word "extolling" is closest in meaning to ______.A welcomingB statingC bemoaningD praising第10题Which of the following conclusions about Phyllis is supported by the passageA She would have been more recognized as a poet if she had not been black.B She would have written poetry if she had stayed in Africa.C She went unrecognized as a poet during her lifetime.D She only wrote religious poetry.第11题About fifty years ago; plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However; they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy; of course. The process of respiration uses sugar to make the high energy compound ATP; which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen.The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins; and the roots provide the shoots with water and minerals. In addition; roots can provide the shoots with organic nitrogen compounds. This comes in handy for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing; they produce protein; but only mature leaves can "export" protein to the rest of the plant in the form of amino acids.What is the main topic of the passageA The relationship between a plant's roots and its shoots.B What can be learned by growing roots in isolation.C How plants can be grown without roots.D What elements are necessary for the growth of plants.第12题The underlined word "themselves" in Paragraph 1 refers to ______.A plant physiologistsB solutionsC laboratory flasksD roots第13题The scientists found what the isolated roots need is ______.A quite naturalB sugar; minerals and vitaminsC some rare vitaminsD organic nitrogen compounds第14题Roots have the ability to ______.A make proteinsB obtain fresh airC produce inorganic nitrogenD carry out activities without energy第15题According to the passage; what is ATPA A biochemical process.B The tip of a root.C A chemical compound.D A type of plant cell.第16题The underlined word "intact" in Paragraph 2 is closest in meaning to ______.A matureB wildC wholeD tiny第17题The use of the phrase "comes in handy" underlined in Paragraph 2 indicates that the process is ______.A unavoidableB predictableC necessaryD successful第18题It can be inferred from the passage that; in the early spring; the buds of plants ______.A "export" protein in the form of amino acidsB do not require waterC have begun photosynthesizingD obtain organic compounds from the root第19题Which of the following best describes the organization of the passageA The results of two experiments are compared.B A generalization is made; and several examples of it are given.C The findings of an experiment are explained.D A hypothesis is presented; and several means of proving it are suggested.第20题Where is this passage likely to be foundA A newsletter.B A magazine.C A storybook.D A novel.第21题Natural flavorings and fragrances are often costly and limited in supply. For example; the vital ingredient in a rose fragrance is extracted from natural rose oil at a cost of thousands of dollars a pound; an identical synthetic substance can be made for 1% of this cost. Since the early twentieth century; success in reproducing these substances has created a new industry that today produces hundreds of artificial flavors and fragrances.Some natural fragrances are easily synthesized; these include vanillin; the aromatic ingredient in vanilla; and benzaldehyde; the aromatic ingredient in wild cherries. Other fragrances; however; have dozens; even hundreds of components. Only recently has it been possible to separate and identify these ingredients by the use of gas chromatography and spectroscopy. Once the chemical identity is known; it is often possible to synthesize them. Nevertheless; some complex substances; such as the aroma of fresh coffee; have still not been duplicated satisfactorily. Many of the chemical compounds making up these synthetics are identical to those found in nature; and are as harmless or harmful as the natural substances. New products must be tested for safety; and when used in food; must be approved by the U.S. Food and Drug Administration.The availability of synthetic flavors and fragrances has made possible a large variety of products; from inexpensive beverages to perfumed soap to used cars with applied "new car odor."From the passage we can learn that ______.A natural flavorings and fragrances are not quite dearB the limitation of natural flavorings and fragrances is clearC the supply of natural flavorings and fragrances is adequate to meet the demandD the cost of producing natural flavorings and fragrances is high第22题Which of the following is true according to the passageA Natural rose fragrance is 100 times more expensive to produce than artificial rose fragrance.B The most important ingredient in a rose fragrance is obtained from natural rose oil at a low cost.C A different synthetic substance can be made for 1% of the cost.D Natural rose oil costs the same as its fragrances.第23题The industry of producing hundreds of artificial flavors and fragrances probably appeared in ______.A 2000B 1953C 1909D 1810第24题According to the passage; all the following are easier to synthesize EXCEPT ______.A aromatic ingredient in vanillaB vanillaC aromatic ingredient in wild cherryD the flavor of fresh coffee第25题The underlined word "duplicated" in Paragraph 2 is closest in meaning to ______.A make doubleB make a copy ofC produce something equal toD take from第26题Why does the author mention fresh coffee in Paragraph 2A As an example of complex substances having not been duplicated satisfactorily.B Because the coffee fragrance is hard to produce.C To conclude the passage.D The smell of fresh coffee is inviting.第27题______; a substance can be synthesized.A Upon identifying the basic components of itB Once chemically analyzedC When gas chromatography is usedD If spectroscopy is adopted第28题It can be inferred from the passage that ______.A vanillin is easier to synthesize than benzaldehydeB not all synthetic flavors are harmlessC in general; the less components there are in a fragrance; the harder it is to synthesizeD synthesized substances must be tested for safety only if they are used in food第29题Which of the following is the best title for the passageA How to Synthesize FragrancesB Synthetic Substances Are Easy to MakeC Natural Flavorings and FragrancesD Synthetic Flavors and Fragrances第30题Which of the following is NOT true according to the last paragraphA Synthetic fragrances can be used to make a used car smell like a new one.B Synthetic flavors and fragrances have added to the varieties of products.C Lemon soap is made out of some delicious lemon.D It is likely that a bottle of orange juice is synthesized.第31题Some people associate migration mainly with birds. Birds do travel vast distances; but mammals also migrate. An example is the caribou; reindeer that graze on the grassy slopes of northern Canada. When the weather turns cold; they travel south until spring. Their tracks are so well-worn that they are clearly visible from the air. Another migrating mammal is the Alaska fur seal. These seals breed only in the Pribilot Islands in the Bering Sea. The young are born in June and by September are strong enough to go with their mothers on a journey of over 3;000 miles. Together they swim down the Pacific Coast of North America. The females and young travel as far as southern California. The males do not journey so far. They swim only to the Gulf of Alaska. In the spring; males and females all return to the islands; and there the cycle begins again. Whales are among the greatest migrators of all. The humpback and blue whales migrate thousands of miles each year from the polar seas to the tropics. Whales eat huge quantities of plankton. These are most abundant in cold polar waters. In winter; the whales move to warm waters to breed and give birth to theiryoung.From the passage we can learn that ______.A people migrate like animalsB only birds migrateC the female fur seals migrate only to the Gulf of AlaskaD not all mammals migrate第32题The phrase "An example" underlined in Paragraph 1 refers to an example of a ______.A migratory mammalB place where animals migrateC migrating birdD person who associates migration with birds第33题All the mammals are mentioned as migrating ones EXCEPT ______.A caribouB fin whaleC reindeerD Alaska fur seal第34题Where can you see from the air the migration of the mammalsA In the Pribilot Islands.B In the Bering Sea.C In southern California.D In northern Canada.第35题Which of the following is NOT trueA Whales breed in winter.B Young whales are given birth in cold waters.C Alaska fur seals give birth to the young only in one area.D Alaska fur seals are born in warm weather.第36题Together ______ of Alaska fur seals swim down the Pacific Coast of North America.A mothers and the youngB fathers and the youngC parents and the youngD seals and whales第37题Which of the following is NOT described in the passageA Whales migrate to breed and give birth to their young.B Whale-watching in Boston in summer is attracting.C Seals breed in the north before migration.D Reindeer feed on grass.第38题Whales live on ______.A tiny plants and animals in the seaB the grassy slopes of northern CanadaC their young in cold winterD the abundant seafood in tropic waters第39题How many kinds of migrating mammals are mentioned in the passageA Four.B Three.C Two.D One.第40题What is the best title of the passageA Three Types of WhalesB Birds MigrationC Mammals Also MigrateD Several Kinds of Migration第41题Electronic mail has become an extremely important and popular means of communication.The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mail traffic; up from an estimated 7 percent in 2001; and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail; or for the time spent accessing; reviewing; and discarding such mail; or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mail and creates a risk that wanted electronic mail messages; both commercial and noncommercial; will be lost; overlooked; or discarded amidst the larger volume of unwanted messages; thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mailcontains material that many recipients may consider vulgar or pornographic in nature.The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services; businesses; and educational and nonprofit institutions that carry and receive such mail; as there is a finite volume of mail that such providers; businesses; and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail.Many senders of unsolicited commercial electronic mail purposefully include misleading information in the messages' subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject or 'opt-out' o0 receipt of commercial electronic mail from such senders in the future; other senders provide no such 'opt-out' mechanism; or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future; or both.Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service. The problems associated with the rapid growth and abuse of unsolicited commercial electronic mail cannot be solved by the government alone. The development and adoption of technological approaches and the pursuit of cooperative efforts with other countries will be necessary as well.According to the passage; efficiency of e-mail is threatened by ______.A heavy e-mail trafficB fraudulent e-mail messagesC large volume of messagesD increasing amount of unwanted e-mail第42题Which of the following is NOT true about unwanted e-mailA It costs money to receive them.B It's free to store them.C It takes time to access them.D It takes time to throw them away.第43题Unwanted e-mail may ______.A cause companies to fail in businessB cause wanted e-mail messages to loseC damage the credit of a companyD do good to a small company第44题"Pornographic" in Paragraph 3 probably means ______.A decentB instructionalC sexualD commercial第45题What does unwanted e-mail messages do to the providers of the Internet servicesA Raising their cost.B Raising the Internet speed.C Improving their business.D Attracting investment.第46题"Disguise" in Paragraph 4 is closest in meaning to ______.A revealB hide。

外研版英语九（上）Module 1 Wonders of the world知识点详解Unit 1What is a wonder of the world?★(A3).【知识点再现】Let’s call Wonder of the World and join in the discussion. 我们给《世界奇观》节目打电话，加入讨论吧。

【知识点1】wonder可作动词或名词，其用法如下：①wonder作名词，意为“奇迹；奇观”时，是可数名词，其复数形式为wonders。

如：We have visited many wonders of the world. 我们已经参观了许多世界奇观。

The Great Wall is one of the seven wonders of the world. 长城是世界上七大奇迹之一。

②wonder作名词，意为“惊叹；惊奇”时，是不可数名词。

常用的句型有：It’s a wonder that...令人惊奇的是……；It’s no wonder that... 难怪……。

如：It’s no wonder that he is late. 难怪他迟到了。

It’s a wonder (that) more people weren’t hurt. 奇怪的是没有更多的人受到伤害。

③wonder作动词，意为“想知道”，相当于 want to know，后面接who, what, why, where, if或that 等引导的宾语从句或“疑问词+不定式”构成的短语。

如：I wonder who she is. 我想知道她是谁。

She wondered what the child was doing. 她感到疑惑，孩子究竟在干什么。

I wonder why Ann is late. 我想知道安为什么迟到了。

I wonder (that) she has won the race. 我对她赢了比赛感到惊讶。

L01-01 begin 12’48”§Lesson 1 A puma at large 逃遁的美洲狮【New words and expressions】生词和短语◆puma n. 美洲狮◆spot v. 看出，发现◆evidence n. 证据◆accumulate v. 积累，积聚◆oblige v. 使…感到必须◆hunt n. 追猎；寻找◆blackberry n. 黑莓◆human being 人类◆corner v. 使走投无路，使陷入困境◆trail n. 一串，一系列◆print n. 印痕◆cling (clung, clung ) v. 粘◆convince v.使…信服◆somehow adv. 不知怎么搞地，不知什么原因◆disturb v. 令人不安学习词汇时仅知道汉语语义是不够的，要把单词放在语句中体会其应用学习关键句型结构时则要把它放在段落结构或文章里★spot v. 看出，发现pick out / see / recognize / catch sight of eg: A tall man is easy to spot in the crowd. He has good eye for spotting mistakes. 他有敏锐的识别错误的能力。

spot(做动词时候) = see:强调结果、辨别出、看见、识别、发现。

find 强调发现的结果。

find out 查出事实真相。

discover 做出重大发现notice 注意到observe 观察watch 观察活动中的人或画面spot n. 斑点eg: There is a white spot on the shirt.on the spot1,立刻，马上（at once, immediately ）Anyone breaking the rules will be asked to leave on the spot.2,at the place of the action 在现场Wherever she is needed , she is quickly on the spot.★evidence [u]n. 证据When the police arrived, he had already destroyed the evidence.evidence=proofin evidence:显而易见的.He was in evidence at the party. evidently adv.evident adj.★accumulate vt,vi. 积累，积聚accumulate 强调积累的过程As the evidence accumulates, experts from the zoo felt obliged to investigate.gather vt. 聚集，把某人召集在某处collect 收集，采集assemble 集合，集会，vt. 装配hoard 大量地贮存The squirrel hoards up nuts for the cold winter.hoard up= store upamass 积聚（主要用于诗歌和文学作品）★oblige v. 使…感到必须feel obliged to do sth.感觉有必要做某事be obliged to do sth 被迫做某事★hunt n. 追猎；寻找L01-01 end 12’48”L01-02 begin 13’15”run after 强调追赶、追求.seek 追寻（梦想，理想）= pursuechase 追赶.hunt forsearch 搜寻某处为了寻找到某人或某物★corner v. 使走投无路，使陷入困境corner n. 角落at the corner of the streetin the corner of the roomon the corner of the deskbe cornered ………被逼得走投无路常用于被动语态：The thief was cornered at last.The problem cornered me.这个问题把我难例了。