大学英语四六级考试选词填空专项训练题
大学英语四级(选词填空)专项训练
大学英语四级（选词填空）专项训练大学英语四级（选词填空）专项训练2020年6月大学英语四级真题Questions 47 to 56 are based on the following passage. The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday. While elderly people __47__ to sleep for fewer hours than they did when they were younger, this has a(n) __48__ effect on their brain＇s performance and they would benefit from getting more, according to research. Sean Drummond, a. psychiatrist (心理医生) at the University of California, San Diego, said older people are more likely to suffer from broken sleep, while younger people are better at sleeping __49__ straight through the night. More sleep in old age, however, is __50__ with better health, and most older people would feel better andm ore __51__ if they slept for longer periods, he said. “The ability to sleep in one chunk (整块A) alert I) formally B) associated J) function C) attracting K) mixed D) cling L) negative E) continuing M) sufficient F) definitely N) tend G) different O) younger 答案Part IV Reading Comprehension (Reading in depth) 47 N tend 48 L negative 49 H efficiently 50 B associated 51 A alert 52 J function/ 53 F definitely 54 O younger 55 E continuing56 G different 文章大意：本文主要讲述的是关于老年人睡眠的问题：是否老年人与年轻人相比只需要较少的睡眠［A］abilities ［I］extent ［B］achieve ［J］indicates ［C］appeal ［K］proceeds ［D］complaints ［L］psychological ［E］contributions ［M］raised ［F］displayed ［N］smart ［G］essentially ［O］standard ［H］eventually 答案Part IV Reading Comprehension (Reading in depth) 47. M) raised 48. L) psychological 49. E) contributions 50. A) abilities 51. B) achieve 52. N) smart 53. I) extent 54. J) indicates 55. G) essentially 56. H) eventually 2020年6月英语四级考试真题Part IV Reading Comprehension (Reading in Depth) (25 minutes) Section A Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item onAnswer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once. Questions 47 to 56 are based on the following passage. When we think of green buildings, we tend to think of new ones – the kind of high-tech, solar-paneled masterpieces that make the covers of architecture magazines. But the U.S. has more than 100 million existing homes, and it would be __47__ wasteful to tear them all down and __48__ them with greener versions. An enormous amount of energy and resources went into the construction of those houses. And it would take an average of 65 years for the __49__ carbon emissions from a new energy-efficient home to make up for the resources lost by destroying an old one. So in the broadest __50__, the greenest home is the one that has already been built. But at the same time, nearly half of U. S. carbon emissions come from heating, cooling and __51__ our homes, offices and other buildings. “You can＇t deal with climate change without dealing with existing buildings,“ says Richard Moe, the president of the National Trust. With some __52__, the oldest homes tend to be the least energy-efficient. Houses built before 1939 use about 50% more energy per square foot than those built after 2020, mainly due to the tiny cracks and gaps that__53__ over time and let in more outside air. Fortunately, there are a __54__ number of relatively simple changes that can green older homes, from __55__ ones like Lincoln＇s Cottage to your own postwar home. And efficiency upgrades (升级) can save more than just the earth; they can help __56__ property owners from rising power costs. 注意：此部分试题请在答题卡2上作答。
大学英语四级考试阅读理解选词填空真题汇编(含答案)
大学英语四级考试阅读理解选词填空真题专练2018.6 第一套Part ⅢReading Comprehension (40 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.An office tower on Miller Street in Manchester is completely covered in solar panels. They are used to create some of the energy used by the insurance company inside. When the tower was first 26 in 1962, it was covered with thin square stones. These small square stones became a problem for the building and continued to fall off the face for 40 years until a major renovation was 27 . During this renovation the building's owners, CIS, 28 the solar panel company,Solar century. They agreed to cover the entire building in solar panels. In 2004, the completed CIS tower became Europe's largest 29 of vertical solar panels. A vertical solar project on such a large 30 has never been repeated since.Covering a skyscraper with solar panels had never been done before, and the CIS tower was chosen as one of the "10 best green energy projects". For a long time after this renovation project, it was the tallest building in the United Kingdom, but it was 31 overtaken by the Mill bank Tower.Green buildings like this aren't 32 cost-efficient for the investor, but it does produce much less pollution than that caused by energy 33 through fossil fuels. As solar panels get 34 , the world is likely to see more skyscrapers covered in solar panels, collecting energy much like trees do. Imagine a world where building the tallest skyscraper wasn't a race of 35 , but rather one to collect the most solar energy.A)cheaper B) cleaner C) collection D) competed E) constructed F) consulted G)dimension H) discovered I) eventually J) height K) necessarily L) production M) range N)scale O) undertaken2018.6（第二套）Part Ⅲ Reading Comprehension (40 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Since the 1940s, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the United States for levels of 26 . Gazing down on the city from the Getty Center, an art museum in the Santa Monica Mountains, one would find the view of the Pacific Ocean blurred by the haze(霾). Nor is the state's bad air 27 to its south. Fresno, in the central valley, comes top of the list in America for year-round pollution. Residents' hearts and lungs are affected as a 28 . All of which, combined with California's reputation as the home of technological 29 , makes the place ideal for developing and testing systems designed to monitor pollution in 30 . And that is just what Aclima, a new firm in San Francisco, has been doing over the past few months.It has been trying out monitoring stations that are 31 to yield minute-to-minute maps of 32 air pollution. Such stations will also be able to keep an eye on what is happening inside buildings, including offices.To this end, Aclima has been 33 with Google's Street View system. Davida Herzl, Aclima's boss, says they have revealed pollution highs on days when San Francisco's transit workers went on strike and the city's 34 were forced to use their cars. Conversely, "cycle to work"days have done their job by 35 pollution lows.A)assisted B) collaborating C) consequence D) consumers E) creating F) detail G)domestic H) frequently I) inhabitants J) innovation K) intended L) outdoor M) pollutants N) restricted O) sum2018.6（第三套）Part Ⅲ Reading Comprehension (40 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Neon (霓虹) is to Hong Kong as red phone booths are to London and fog is to San Francisco.When night falls, red and blue and other colors 26 a hazy (雾蒙蒙的) glow over a city lit up by tens of thousands of neon signs. But many of them are going dark, 27 by more practical, but less romantic, LEDs (发光二极管).Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy 28 , but still carry great cost."Tome, neon represents memories of the past," says photographer Sharon Blance, whose series Hong Kong Neon celebrates the city's famous signs. "Looking at the signs now I get a feeling of amazement, mixed with sadness."Building a neon sign is an art practiced by 29 trained on the job to mold glass tubes into 30 shapes and letters. They fill these tubes withgases that glow when 31 . Neon makes orange,while other gases make yellow or blue. It takes many hours to craft a single sign.Blance spent a week in Hong Kong and 32 more than 60 signs; 22 of them appear in the series that capture the signs lighting up lonely streets—an 33 that makes it easy to admire their colors and craftsmanship. "I love the beautiful, handcrafted, old-fashioned 34 of neon,"says Blance. The signs do nothing more than 35 a restaurant, theater, or other business, but do so in the most striking way possible.A)alternative B) approach C) cast D) challenging E) decorative F) efficient G)electrified H) identify I) photographed J) professionals K) quality L) replaced M) stimulate N) symbolizes O) volunteers大学英语四级考试阅读理解选词填空真题专练参考答案2018.6 第一套Part ⅢReading Comprehension (40 minutes)Section A答案速查：26--30 E O F C N 31--35 I K L A J参考词汇：corresponding adj. 相当的，相应的; 一致的;solar panels solar panels太阳能板; 太阳能电池板（solar panel的复数）；insurance company 保险公司；square adj. 平方的; 正方形的; 直角的; 正直的; vt. 使成方形; 与…一致; vi. 一致; n. 广场; 正方形；fall off 减少; 跌落; 下降; 离开；renovation n. 革新; 修理; 恢复活力；entire 完全的，整个的；vertical adj. 垂直的，直立的;repeat vt. 重复; 复制; 背诵; n. 重复; 副本；skyscraper n. 摩天楼，超高层大楼；特别高的东西overtake overtake vt. 赶上; 压倒; 突然来袭; vi. 超车overtaken v. 赶上，压倒（overtake的过去分词）cost-efficient adj. 有成本效益的；合算的;investor n. 投资者；fossil fuels [能源] 化石燃料; [能源] 矿物燃料；consult vt. 查阅; 商量; 向…请教;dimension n. 方面;[数] 维；尺寸；次元；容积vt. 标出尺寸；range n. 范围; 幅度; 排; 山脉; vi. 平行，列为一行; 延伸scale n. 规模; 比例；on a large scale 大规模地；undertake vt. 承担，保证; 从事; 同意; 试图注：上述词汇绝大部分为高中曾经学过的词汇。
四级考试选词填空训练题附答案解析
四级考试选词填空训练题附答案解析四级考试选词填空训练题(一)Perhaps like most Americans you have some e某tra pounds to 47 . You may even have tried a fad diet or two, but found yourself right back where you started. The key to weight loss is regular 48activity. And surprisingly, you don't have to give up eating or make the gym your second home to see long-term, 49 effects.You body needs a certain amount of energy to maintain basic 50 such as breathing, blood circulation and digestion. The energy required to keep your organs functioning is referred to as theresting or basal metabolic rate.Any time you are active, 51 energy is required. It is obtained from glycogen and fat stored in the blood, liver, and muscles. The key to losing weight is to draw on the fat rather than on the carbohydrate reserves.Which of the two energy sources you use depends on the intensity and 52 of your activity. The higher the intensity, the more your body will pull from the stored carbohydrates. The lower the intensity, the more your body will 53 on fat as its fuel.Aerobic e某ercise is most 54 for weight loss. When you perform aerobic activities you 55 contract large muscle groups such as your legs and arms. Walking, running, rollerblading, swimming, dancing, and jumping jacks are all forms of aerobic activity.Surprisingly, if your aerobic activity is low to moderately intense and of long duration, you will burn more fat than if you had 56 in a short burst of high-intensity e某ercise. In short, a brisk 30-minute walk will burn fat while a 100-yard sprint will burn glycogen.[A] positive[B] additional[C] duration[D] effectivee[E] shed [F] physical[G] food [H] functions [I] participated [J] rely [K] cut [L] repeatedly[M] uses [N] little [O] obvious四级考试选词填空训练题答案47. E 该空需填入动词原形，结合原意“和大多数美国人一梯状，你(的体重)可能也有几磅需要________〞可知，E(去除)最符合文意。
大学英语四级选词填空专项训练题目及答案
大学英语四级选词填空专项训练题目及答案今日为大家预备的是大学英语四级选词填空专项训练的题目及答案，希望对大家的四级考试备考有关怀。
Modern people have far more gum disease than our predecessors, according to a British study of skulls published Friday. The surprise findings provide further (1)_______ that modern habits such as smoking are damaging to oral health.Gum disease, also known as periodontitis (牙周炎), is the (2) _______ of a chronic inflammatory (发炎的) response to the build-up of dental plaque (牙菌斑). Whilst much of the population lives with mild gum disease, (3) _______ such as tobacco smoking or medical conditions like diabetes can trigger more (4) _______ chronic periodontitis, which can lead to the loss of teeth.The study, published in the British Dental Journal, (5) _______ 303 skulls from a Romano-British burial ground in England, for evidence of dental disease. Only 5 percent of the skulls showed (6) _______ of moderate to severe gum disease, compared to todays population of which around 15-30 percent of adults have chronic progressive periodontitis.According to experts, this (7) _______ population was non-smoking and likely to have had very low levels of diabetes mellitus (糖尿病), two factors that are known to (8) _______ increase the risk of gum disease in modern populations. Among the people who survived into adulthood, the peak age at death appears to have been in their 40s. Infectious diseases are thought to have been a common cause of death at that time.Experts concluded that, this study shows a major deterioration in oral health between Roman times and modern England. By underlining the probable role of smoking, (9) _______ in determining the susceptibility to progressive periodontitis in modern populations, there is a real sign that the disease can be (10) _______.A) severe B) avoided C) trend D) examinedE) especially F) result G) course H) justifiedI) ancient J) signs K) evidence L) normalM) determined N) greatly O) factors答案：1. K) evidence2. F) result3. O) factors4. A) severe5. D) examined6. J) signs7. I) ancient8. N) greatly9. E) especially10. B) avoided四级选词填空练习题科技类While still relatively novel in the United States, so-called green roofs urban rooftops covered with grasses, plants and other types of greenery are becoming increasingly popular around the world.The logic is obvious: Green roofs can help to cool down buildings and pull some carbon dioxide from the air and feed it back into plant (1)_______.But the (2)_______ benefits of green roofs to busy office workers may also be substantial. Kate Lee and a group of colleagues found that (3)_______ anattention-demanding task with a 40-second microbreak in which one simply looks at a computerized (4)_______ of a green roof improved focus as well as subsequent performance on the task.In the research, 150 students were asked to perform a demanding task called the Sustained Attention to Response Task (SART). In the task, respondents view a (5)_______ of individual numbers, between 1 and 9, on a computer screen. Each number flashes by very (6)_______ and the research subject has to press a particular key as fast as possible unless, the number is 3. In that case, subjects have to catch themselves and not respond which is difficult to do, given the habit built up of repeatedly and quickly (7)_______ the key.In the current study, students had to (8)_______ the SART task not once, but twice. However, they received a 40-second microbreak in between the two trials. During that break, their computer screens flashed either to a digital image of a city building roof covered in (9)_______, or one covered with grass and flowers. Then, they completed the remainder of the SART trial.Afterward, the students (10)_______ to the green roof scene not only reported that it felt more restorative (恢复健康的), they performed better on the task. In particular, they showed less fluctuation in response time, and made fewer errorsA) series B) clicking C) imageD) concrete E) interrupting F) fairlyG) growth H) total I) exposed J) completeK) panic L) explained M) rapidlyN) relation O) psychological答案：1. G) growth2. O) psychological3. E) interrupting4. C) image5. A) series6. M) rapidly7. B) clicking8. J) complete9. D) concrete10. I) exposedAlthough progress has been made, equality between male and female professionals remains a critical issue.According to a (1) _______ released by global recruitment specialist group Hays on Tuesday, women are less likely than their male co-workers to believe that pay equality and (2) _______ opportunities exist for both genders in the workplace.Hays polled 521 professionals, 55 percent of whom were female. Only 7 percent of women aged 25 or under think there is (3) _______ inequality of pay. But as they progress in their career, that number (4) _______. About 29 percent of women aged between 26 and 40, and 35 percent of women aged 41 or above think there is gender inequality of pay.In general, transport and distribution, mining and (5) _______, as well as professional services, drew the most negative answers among both male and female professionals (6) _______ equal pay.But the (7) _______ of polled men think that the situation is not that bad, as only 13 percent of them think that equally capable men and women are not paid or (8) _______ equally.This suggests that most people in executive and (9) _______ management roles-the majority of whom are men-still fail to see any inequality when it comes to pay and career opportunities between the sexes. This makes it difficult to see how we will see any significant advancement in this area while the majority of people in senior roles do not (10) _______ it as an issue, said Christine Wright, managing director of Hays.A) declines B) senior C) concerningD) majority E) rewarded F) resourcesG) advanced H) determining I) recognizeJ) increases K) survey L) identityM) equal N) totally O) gender答案：K) surveyM) equalO) genderJ) increasesF) resourcesC) concerningD) majorityE) rewardedB) seniorI) recognize。
英语四级选词填空练习题及答案
英语四级选词填空练习题及答案英语四级选词填空练习题及答案：There is evidence that the usual variety of high blood pressure is,in part,a familiar disease.Since families have similar genes as well as similar environments,familiar diseases could be due to shared genetic influences,to shared environmental factors,or to both.For some years,the role of one environmental factor commonly shared by families,namely dietary salt(i.e.,sodium chloride),has been studied at Brookhaven National Laboratory.These studies suggest that chromic excess salt ingestion can lead to high blood pressure in man and animals.Some individuals,however,and some rats consume large amounts of salt without developing high blood pressure.No matter how strictly all environmental factors were controlled in these experiments,some salt-fed animals never developed hypertension whereas a few rapidly developed very severe hypertension followed by early death.These marked variations were interpreted to result from differences in genetic constitution.By mating is successive generations only those animals that failed to develop hypertension from salt ingestion,a resistant strain(the "R" Strain)has been evolved in which consumption of large quantities of salt fails to influence the blood pressure significantly.In contrast,by mating only animals that quickly develop hypertension from salt,a sensitive strain("S" strain)has also been developed.The availability of these tow strains permits investgations not heretofore possible.They provide a plausible laboratory model on which to investigate some clinical aspects of the human prototypes of hypertension.More important,there might be the possibility of developing methods by which genetic susceptibility of human beings to high blood pressure can be defined without waiting for its appearance.Radioactive sodium 22 was an important "tool" in working out the characteristics of the sodium chloride metabolism.1.The study of the effects of salt on high blood pressure was carried out ______.a.as members of the same family tend to use similar amounts of saltb.to explore the long-term use of a sodium based substancec.because it was proven that salt caused high blood pressured.because of the availability of chemically pure salt and its derivatives2.The main difference between "S" and "R" rats is their ______.a.need for sodium 22b.rate of matingc.reaction to saltd.type of blood3.We can infer from the article that sodium 22 can de used to ______.a.control high blood pressureb.cure high blood pressure caused by saltc.tell the "S" rats from the "R" ratsd.determine what a sodium chloride metabolism is like4.The most beneficial results of the research might be ______.a.development of diets free of saltb.an early cure for high blood pressurec.control of genetic agents that cause high blood pressured.the early identification of potential high blood pressure victims5.Which of the statements best relates the main idea of this article?a.When salt is added rats and human beings react similarly.b.The near future will see a cure for high blood pressure.c.The medical field is desperately in need of research.d.A tendency toward high blood pressure may be a hereditary factor.答案：acddd英语四级选词填空练习题及答案：Directions: In this section, there is apassage with ten blanks. You are required to select one word for each blankfrom a list of choices given in a word bank following the passage. Read thepassage through carefully before making your choices. Each choice in the bankis identified by a letter. Please mark the corresponding letter for each itemon Answer Sheet2 with a single line through the centre. You may not use any ofthe words in the bank more than once.What is itabout Americans and food? We love to eat, but we feel1__________ about itafterward. We say we want only the best, but we strangely enjoy junk food.Were 2__________ with health and weight loss but face an unprecedented epidemicof obesity(肥胖). Perhapsthe3__________ to this ambivalence(矛盾情结) lies in our history. The first Europeans came to this continentsearching for new spices but went in vain. The first cash crop(经济作物) wasnt eaten but smoked. Thenthere was Prohibition, intended to prohibit drinking but actually encouragingmore 4__________ ways of doing it.Theimmigrant experience, too, has been one of inharmony. Do as Romans do meanseating what “real Americans” eat, but our nations food has come to be 5__________ byimports—pizza, say, or hot dogs. And some of the countrys most treasuredcooking comes from people who arrived here in shackles.Perhaps itshould come as no surprise then that food has been a medium for the nationsdefining struggles, whether at the Boston Tea Party or the sit?ins at southernlunch counters. It is integral to our concepts of health and even moralitywhether one refrains from alcohol for religious reasons or evades meat forpolitical 6__________But strongopinions have not brought 7__________ . Americans are ambivalent about what theyput in their mouths. We have become 8__________ of our foods, especially as welearn more about what they contain.The 9__________ infood is still prosperous in the American consciousness. Its no coincidence,then, that the first Thanksgiving holds the American imagination in suchbondage(束缚). Its whatwe eat—and how we 10__________ it with friends, family, and strangers—that helpdefine America as a community today.A. answerB. resultC. shareD. guiltyE. constantF. definedG. vanishH. adaptedI. creativeJ. beliefK. suspiciousL. certaintyM. obsessedN. identifyO. ideals答案：1.E)essence2.H)doubles3.A)components4.K)devices5.O)technique6.F)inspiration7.L)manufacture8.I)solution9.C)standards10.B)advantage。
（完整版）CET4选词填空练习题汇总
（完整版）CET4选词填空练习题汇总英语四级选词填空练习题(1)What is it about Americans and food? We love to eat, but we feel _ 1 _ about it afterward. We say we want only the best, but we strangely enjoy junk food. We're 2 with health and weight loss but face an unprecedented epidemic of obesity(肥胖). Perhaps the 3 to this ambivalence(矛盾情结) lies in our history. The first Europeans came to this continent searching for new spices but went in vain. The first cash crop(经济作物) wasn’t eaten but smoked. Then there was Prohibition, intended to prohibit drinking but actually encouraging more 4 ways of doing it.The immigrant experience, too, has been one of inharmony. Do as Romans do means eating what “real Americans”eat, but our nation’s food has come to be 5 by imports—pizza, say, or hot dogs. And some of the country’s most treasured cooking comes from people who arrived here in shackles.Perhaps it should come as no surprise then that food has been a medium for the natio n’s defining struggles, whether at the Boston Tea Party or the sit-ins at southern lunch counters. It is integral to our concepts of health and even morality whether one refrains from alcohol for religious reasons or evades meat for political 6 .But strong opinions have not brought 7 . Americans are ambivalent about what they put in their mouths. We have become 8 of our foods, especially as we learn more about what they contain.The 9 in food is still prosperous in the American consciousness. It's no coincidence, then, that the first Thanksgiving holds the American imagination in suchbondage(束缚). It's what we eat—and how we 10 it with friends, family, and strangers—that help define America as a community today.A. answerB. resultC. shareD. guiltyE. constantF. definedG. vanishH. adaptedI. creativeJ. beliefK. suspiciousL. certaintyM. obsessedN. identifyO. ideals答案详解：1. D feel是一个系动词，可以判断此处应填入一个形容词，通过上下文意思，以及后面介词about, 可以确定选项为D项guilty, 短语feel guilty about sth. "对……感到有愧"。
2023年6月四级选词填空题第三套
2023年6月四级选词填空题第三套在2023年6月的四级考试中，选词填空题是非常重要的一部分。
这类题型要求考生根据文章内容和上下文，从给出的选项中选择最佳的单词或短语来填空，以完成句子的意思。
以下是2023年6月四级选词填空题第三套的相关内容。
1. One of the biggest challenges in modern society is ________. Many people find it difficult to maintain a healthy work-life balance. It is important to find a way to________ work and personal life.选项：A. achievingB. integratingC. balancingD. managing解析：根据题目中的描述，这是一个关于工作和生活平衡的问题。
根据上下文，我们需要选择一个选项来填空，这个选项要能够表达“整合”工作和个人生活的意思。
因此，选项B“integrating”是最佳选择。
2. The development of technology has ________ changed the way we live. Nowadays, we can easily ________ with people from all over the world through social media platforms.选项：A. graduallyB. significantlyC. occasionallyD. occasionally解析：根据题目中的描述，这是关于科技发展对生活方式的影响的问题。
根据上下文，我们需要选择一个选项来填空，这个选项要能够表达“显著地”改变我们的生活方式。
因此，选项B“significantly”是最佳选择。
3. The government has launched a new campaign to ________ people to reduce their carbon footprint. By ________ public awareness about environmental issues, they hope to promote a greener lifestyle.选项：A. encourageB. discourageC. informD. ignore解析：根据题目中的描述，这是一个关于政府倡导环保的问题。
英语四级考试选词填空专项习题及答案
英语四级考试选词填空专项习题及答案想要提高英语四级选词填空的分数，就要考生加强平时的阅读练习。
下面店铺为大家带来英语四级考试选词填空专项习题，供考生备考练习。
英语四级考试选词填空专项习题(一)The festive break is fast becoming a distant memory and for many, New Year fitness regimes are too. Despite2.6m people starting diets on New Year's Day, research suggests that by the end of the week 92 percent of dieters gave up, (36) exercise and gorging on comfort food.Findings(37) by weightloss firm XLS-Medical, suggest that the (38) majority are unsuccessful at sticking to their diets for more than five days a week. Two out of l0 dieters (39) they have their first diet relapse (退步) just four to five days in, with hunger cited as the main cause. Boredom and alcohol were (40) blamed for people failing to keep their health kick on track.Dr. Matt Capehorn, Clinical Director of the National Obesity Forum, (41) that just one day off from dieting can undo a week's worth of hard work. He told Female First: "A healthy diet, aimed at losing llb per week, relies on saving 3500 calories a week by having 500 calories less each day." "A day off the diet should mean that you eat the correct amount, but many dieters see it as an excuse to binge (大吃大喝) and have thousands of calories more than they need. "The results suggest that a (42) 590,000 could already have (43) to stick to New Year diet resolutions.And a vast majority are unaware of the negative impact a single day off can have on their weight loss efforts.Yet (44) it was found only 5 percent of women stick to theirdiets until they've (45) their target weight.A.massiveB.reachedC.highlightedD.blamedE.shunningF.stillG.releasedH.lostI.alsoJ.admittedK.treatedL.dietedM.overallN .vastO.failed英语四级考试选词填空专项习题答案36.E语法判断：exercise后是and，而and前后应为并列结构(又称平行结构)，因为and后为gorging on comfortfood，所以前面也应当是现在分词短语，因此应填入现在分词。
大学英语四六级选词填空练习
Two astronauts face a not-so-merry Christmas after being told to ration their food and hope a cargo ship with extra supplies docks on Dec. 21. Russian cosmonaut Salizhan Sharipov and American Leroy Chiao have been asked to cut out calories equal to three cans of Coke from their daily diet—around 10 percent of their daily 1 and an amount that would be little noticed, NASA said.Russian officials, quoted in the local media, have 2 blamed the previous crew for overeating during their one-month mission earlier this year, leaving a 3 of meat and milk and a surplus of juice and confectionery (糖果).The Dec. 24 launch of the next Progress is now 4 for the crew, stationed in orbit since October. It is due to 5 with the ISS on Dec. 21.NASA officials said their situation was not so different from being cut off on Earth, and their lives were not at risk. If they do not receive 6 supplies, the astronauts would have to 7 the station and return to Earth on the Soyuz capsule that is docked there.Russia has been the sole lifeline to the ISS for almost two years when the United States grounded its 8 fleet after the fatal Columbia accident.Russia has often 9 of its financial struggle to keep the ISS fully serviced single-handedly. Shuttle flights could 10 in May, officials have said, but in the meantime Russia will continue to launch all manned and cargo ships.A) deficit I) adequateB) complained J) dockC) severely K) resumeD) allowance L) vitalE) considerately M) trivialF) shuttle N) evaluateG) evacuate O) freshH) absently文章精要文章讲述了国际空间站上宇航员所面临的困难，尤其是食物短缺的问题。
全国大学英语四级词汇选项填空题附答案
全国大学英语四级词汇选项填空题附答案全国大学英语四级词汇选项填空题附答案英语四级考试目的是推动大学英语教学大纲的贯彻执行，对大学生的英语能力进行客观、准确的.测量，为提高我国大学英语课程的教学质量服务。
下面是店铺给大家带来的全国大学英语四级词汇选项填空题附答案，下面是店铺给大家带来的全国大学英语四级词汇选项填空题附答案，希望能帮到大家！1. The firemen fought for three hours before they managed to ________ the fire.A. make outB. break offC. put outD. cut off2. Please be sure to ______ your work at the end of examination.A. look forB. look afterC. look overD. look into3. The film was so touching that I could hardly _______ my tears.A. hold onB. hold upC. hold backD. hold on to4. Generally _______, that city is less crowded than the others in the same state.A. talkingB. speakingC. sayingD. telling5. In the big flood, only 20 percent of the people in that village __________.A. remainedB. stayedC. livedD. survived6. In children’s minds summer is _________with picnics.A. linkedB. unitedC. joinedD. associated7. I hope my teacher will take my recent illness into ______ when judging my examination.A. regardB. accountC. countD. observation8. It is surprising that this good-natured person had ______ such a crime.A. performedB. madeC. committedD. taken9. Please remind me ______ taking my medicine after supper, you know, I’m so forgetful.A. withB. ofC. forD. in10. We are surprised to hear that Mr. Li has been ______ in that murder caseA. withdrawnB. involvedC. protestedD. recovered11. Would you mind keeping a (n) _______ on our house for us while we are away?A. handB. eyeC. lookD. view12. If the children eat an adequate breakfast, they will be able to ______on their lessons for a longerperiod of time.A. assignB. imposeC. directD. concentrate13. Like many people ______middle age, he was getting rather set in his ways.A. undertakingB. approachingC. extendingD. bearing14. The new research is producing theories. Which ______long-held views about animals.A. disagreeB. challengeC. competeD. mislead15. He had long ______that he had not been told the truth.A. botheredB. wonderedC. suspectedD. recognized16. As the storm drew nearer, black clouds were ______over the sky.A. multiplyingB. gatheringC. circulatingD. growing17. We could just ________ the buildings through the fog.A. check outB. figure overC. look outD. make out18. If I were _______, I’d finish the job quickly.参考答案：BBCDC BCDAA ADCDA ACC英语四级考试单项选择摸底练1. In ancient China, people used to send smoke _____ to warn that the enemy were coming.A. signsB. signalsC. symbolsD. marks答案: B解析: 这个题考四个名词的比较, 其中: signs 迹象; signals 信号; symbols 象征; marks 分数.2. The icy conditions made our travel dangerous. So _____ going by car we took the underground.A. instead ofB. in addition toC. as well asD. at the cost of答案: A解析: instead of 代替,而不是; in addition to 除了…之外(还有); as well as 也(除…之外), 既…又…; at the cost of 以…为代价. 这道题横线后面是动名词形式,所以选项C和D首先排除.3. Sometimes my job is boring, but _____ I enjoy it.A. by contrastB. by natureC. on the wholeD. on the average答案: C解析: by contrast 与…相比,后面要跟with, by contrast with与…相比较; by nature 本性,生性; on the whole 总的来说; on the average 平均.4. I’ll buy the clock _____ it costs.A. whatB. whateverC. whereD. however答案: B解析: 不管花多少钱,我都买下这个钟.5. _____ Mr.Wilson is well again, he can travel.A. Now thatB. So farC. ThoughD. Even if答案: A解析: Now that 既然; So far和现在完成时态连用.1. He( )his previous best performance in the 1000 meters.A. improvesB. improves onC. bettersD. proves2. I( )to interrupt a man when he’s busy working.A. envyB. hateC. admireD. improve3. he was astonished( )what he found.A. atB. toC. forD. on3. They made no effort to hide their amusement( )I produceda packet of sweets from my pocket.A. whateverB. whereverC. whoeverD. whenever4. I had hoped to get $1000 for my old car but had to( )a lot less.A. settle downB. settle inC. settle forD. settle on答案 1. B2. B3. A4. D5. C【全国大学英语四级词汇选项填空题附答案】。
四级英语选词填空模拟练习附答案
四级英语选词填空模拟练习附答案四级英语选词填空模拟练习：In recent years, more and more foreigners are involved in the teaching programs of the United States. Both the advantages and the disadvantages67 using foreign faculty(教师总称)68 teaching positions have to be69 , of course. It can be said that the foreign70 that makes the faculty member from abroad an asset also71 problems of adjustment, both for the university and for the individual. The foreign research scholar usually isolates72 in the laboratory as a means of protection;73 , what he needs is to be fitted 74 a highly organized university system quite different from75 at home. He is faced in his daily work76 differences in philosophy, arrangements of courses and methods of teaching. Both the visiting professor and his students77 a common ground in each others cultures, some78 of what is already in the minds of American students is79 for the foreign professor.While helping him to80 himself to his new environment, the university must also81 certain adjustments in order to82 full advantage of what the newcomer can83 . It isnt always known how to make84 use of foreign faculty, especially at smaller colleges. This is thought to be a85 where further study is called86 . The findings of such a study will be of value to colleges and universities with foreign faculty. 选词填空练习题：67. A) with B) for C) of D) at68. A) in B) on C) for D) within69. A) thought B) measured C) balanced D) considered70. A) situation B) circumstances C) background D) condition71. A) carries B) create C) emerges D) solves72. A) himself B) oneself C) him D) one73. A) otherwiseB) moreover C) however D) whatever74. A) into B) by C) to D) with75. A) those B) which C) what D) that76. A) toward B) with C) to D) at77. A) have B) possess C) need D) lack78. A) concept B) feeling C) plan D) intelligence79. A) ordered B) asked C) put D) required80. A) place B) adapt C) put D) direct81. A) remain B) keep C) make D) cause82. A) take B) make C) do D) be83. A) show B) afford C) express D) offer84. A) powerful B) creative C) imaginary D) advanced85. A) scope B) range C) field D) district86. A) on B) for C) upon D) at四级英语选词填空模拟练习答案详解：67. C本题考查搭配关系。
大学英语四级选词填空专项训练题目 带答案
大学英语四级选词填空专项训练题目带答案下面是学习啦我整理的一些大学英语四级选词填空专项训练题目及答案，希望对大家有关怀。
The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday.While elderly people __1__ to sleep for fewer hours than they did when they were younger, this has a(n) __2__ effect on their brains performance and they would benefit from getting more, according to research.Sean Drummond, a. psychiatrist (心理医生) at the University of California, San Diego, said older people are more likely to suffer from broken sleep, while younger people are better at sleeping __3__ straight through the night.More sleep in old age, however, is __4__ with better health, and most older people would feel better and more __5__ if they slept for longer periods, he said.The ability to sleep in one chunk (整块时间) overnight goes down as we age but the amount of sleep we need to __6__ well does not change, Dr Drummond told the American Association for the Advancement of Science conference in San Diego.Its __7__ a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were __8__. Our data suggests that older adults would benefit from __9__ to get as much sleep as they did in their 30s. Thats __10__ from person to person, but the amount of sleep we had at 35 is probably the same amount as we need at 75.[A] alert[B] associated[C] attracting[D] cling[E] continuing[F] definitely[G] different[H] efficiently[I] formally[J] function[K] mixed[L] negative[M] sufficient[N] tend[O] younger答案解析：文章大意：本文主要讲解并描述的是关于老年人睡眠的问题：是否老年人与年轻人相比只需要较少的睡眠时间?1. N tend tend to 固定搭配;表示倾向于;符合句意;2. L negative 空格后是effect，前面是a(n)，由此可见，该处需要填入一个形容词;题目给出的形容词有negative, sufficient, younger;根据前后语意，填入negative最为恰当，表示少的睡眠时间对大脑的活动有负面的影响。
英语四级考试选词填空专练题含答案
英语四级考试选词填空专练题含答案英语四级考试选词填空专练题(一)The American patent system, provided for in the Constitution, was designed to encourage the creation and use of new technology. An inventor would describe the invention, both in writing and with drawings, and __47__ the description with a model to a government official. If the invention was judged to be ___48__ and beneficial, the official would give the inventor a patent. The patent meant that for 14 years the inventor owned the new invention. Inventors could___49__ their ideas to manufacturers or just use them themselves. The government would not ___50__ any other patent for the same idea, and the inventor could ___51__ anyone of using the patented idea with- out paying the owner of the patent for ___52__ to use it.A useful patent meant that the inventor could make a lot of money. In e某change for this gover- nmental protection, the government published the patent __53___ , which had to provide enough information so that other people could understand the invention—thus adding to the general__54_technological knowledge. And at the end of the 14 years, anyone could use the invention for__55__.The idea behind the patent system was twofold: it would increase the amount of technology, by providing a way for people to make money out of new ideas, and it would make new technology widely available, by publicizing ideas that might ___56__ be kept as trade secrets.A) license I ) specifications B) however J ) yield C) accuse K) issue D) submit L) chargeE) convenient M) available F) permission N) otherwise G) enable O) original H) free英语四级考试选词填空专练题答案47.D 此处需要一个动词。
四级 选词填空25套(精华整理版14页)
1Questions 47 to 56 are based on the following passage.To be “historically minded” is to see things in relation and in perspective, and to judge tolerantly. We remember how differently men have thought and acted in different times. We must always keep an open mind, ready to receive and _____47_____ new evidence. If we grasp this idea, we will never think that a historian is someone who can remember dates. That childish idea is like a calling a man a statesman because he can remember the names of ____48____ in his district. A waiter could remember more names and a telephone operator more numbers than the greatest historian.The true historian is not ____49____ to take all his facts from other historians. Today he makes sure that his statements are based o n ____50____ “documents” or “sources” which go back to the time of the facts themselves.But the historian needs always to be in his ____51____ not to be misled by his sources. A document may not be a real one. Its author may be lying on purpose for some reason. He may be so greatly influenced by national, religious, party, or personal backgrounds as to be totally unfair to the other side. If honest, he may be misinformed as to the facts and mistaken in his ____52___.Anyone who reads the _____53_____ published in the different countries concerning the causes and results of wars will realize that the historian needs _____54_____ and training in handling these sources. The trained historian asks first: “Did this writer mean to tell the truth?” and second: “Was he in a position or _____55____ of mind to tell the truth even if he wants to?” Every statement must be ____56____ weighed and tested and combined with all other available information in order to get at the truth.注意：此部分试题请在答题卡2上作答。
大学英语四六级考试选词填空专项训练题1
大学英语四六级考试选词填空专项训练题1一Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity. Behaviorists, who study the relation between actions and their consequences, argue that rewards can __1__ performance at work and school. Cognitive( 认识派的) researchers, who study various aspects of mental life, maintain that rewards often destroy creativity by encouraging dependence on __2__ and gifts from others.The latter view has gained many supporters, __3__ among educators. But the careful use of small __4__ rewards speaks creativity in grade school children, suggesting that properly presented inducements( 刺激) indeed __5__inventiveness, according to a study in the June Journal of Personality and Social Psychology.“If kids know they’re working for a reward and can focus on a relatively __6__ task, they show the most creativity,” says Robert Eisenberger of the University of Delaware in Newark. “But it’s easy to __7__ creativity by giving rewards for poor performance or creating too much anticipation for rewards.A teacher who continually draws attention to rewards or who hands our high grades for __8__ achievement ends up with uninspired students, Eisenberger holds. As an example of the latter point, he notes growing efforts at major universities to tighten grading standards and __9__ failing grades.In early grades, the use of so-called token economies, in which students handle challenging problems and receive performance-based points to ward valued rewards, shows __10__ in raising efforts and creativity, the Delaware psychologist claims.A)mental B)promise C)kill D)avoid E)hopeF)especially G)aid H)ordinary I)approval J)monetaryK)generally L)improve M)challenging N)restore O)excellentAnswers:1. 选L 第一段主要提出了行为学家和认知派研究专家对于额外奖励的不同看法，因此可以推出此处应填与destroy 意思相反的动词，可选项由improve 和aid ，但能与performance 构成动宾搭配的只有improve ，故排除aid 。
四六级选词填空练习题
四六级选词填空练习题一、名词辨析1. The government is planning to ________ new measures to reduce air pollution.A. introduceB. adoptC. pursueD. investigate2. In order to improve the quality of education, the school has decided to ________ more experienced teachers.A. employB. hireC. recruitD. dismissA. investmentB. contributionC. involvementD. engagement二、动词辨析1. She ________ her phone and realized she had missed several calls.A. picked upB. took upC. made upD. turned up2. The teacher asked the students to ________ their essays before submitting them.A. reviseB. rewriteC. editD. draft3. The police are ________ the case and hope to solve it soon.A. investigatingB. examiningC. inspectingD. overseeing三、形容词辨析1. The ________ weather in the mountains can change rapidly.A. stableB. steadyC. changeableD. variable2. The new policy is ________ to both employers and employees.A. beneficialB. profitableC. advantageousD. useful3. The patient's condition remains ________ after the surgery.A. stableB. steadyC. calmD. quiet四、副词辨析1. She sings ________ well that everyone admires her.A. soB. veryC. tooD. enough2. The meeting will start ________ at 9 o'clock.A. punctuallyB. promptlyC. immediatelyD. rapidly3. He answered the question ________ and accurately.A. brieflyB. conciselyC. simplyD. clearly五、介词短语辨析1. The accident happened ________ the intersection of two busy streets.A. atB. onC. inD. under2. She is responsible ________ the project and will ensure its success.A. forB. toC. withD. ofA. Due toB. Because ofC. Owing toD. As for六、固定搭配A. looking atB. looking intoC. looking afterD. looking for2. The police are ________ the missing child.A. searchingB. seekingC. huntingD. chasingA. achievingB. attainingC. reachingD. acquiring七、连词辨析1. ________ he was tired, he decided to finish the report before going to bed.A. AlthoughB. BecauseC. SinceD. If2. ________ you finish your homework, you can go out and play.A. OnceB. UntilC. WhileD. If3. ________ the train was late, she missed the meeting.A. SinceB. BecauseC. ThereforeD. Otherwise八、短语动词辨析1. He ________ his job last month and is now looking fora new one.A. gave upB. quitC. resigned fromD. retired from2. The teacher ________ the class with an interesting story.A. beganB. startedC. launchedD. initiatedA. moveB. transferC. shiftD. change九、情态动词辨析1. You ________ be more careful when you're driving in the rain.A. mustB. shouldC. canD. may2. She ________ have finished the report now.A. mustB. shouldC. couldD. might3. ________ you mind if I open the window?A. WouldB. CouldC. ShouldD. Might十、时态辨析1. By the time they got to the theater, the movie________.A. has startedB. startedC. had startedD. was startingA. have workedB. workedC. had workedD. was working3. ________ you ever ________ to Paris?A. Have; beenB. Did; goC. Were; goingD. Will; be十一、语态辨析1. The book ________ a famous author.A. writesB. is writtenC. wroteD. has written2. Many accidents ________ careless drivers every year.A. causeB. are causedC. causedD. are causing3. The decision ________ at the last meeting.A. was madeB. madeC. has madeD. is making十二、词义辨析A. enhanceB. increaseC. raiseD. lift2. The teacher asked the students to ________ their answers in writing.A. presentB. showC. displayD. demonstrate3. The conference will be an opportunity to ________ with experts from around the world.答案一、名词辨析1. A. introduce2. C. recruit3. A. investment二、动词辨析1. A. picked up2. A. revise3. A. investigating三、形容词辨析1. C. changeable2. A. beneficial3. A. stable四、副词辨析1. A. so2. A. punctually3. B. concisely五、介词短语辨析1. A. at2. A. for3. A. Due to六、固定搭配1. D. looking for2. A. searching3. A. achieving七、连词辨析1. A. Although2. A. Once3. B. Because八、短语动词辨析1. B. quit2. A. began3. A. move九、情态动词辨析1. A. must2. A. must3. A. Would十、时态辨析1. C. had started2. C. had worked3. A. Have; been 十一、语态辨析1. B. is written2. B. are caused3. A. was made十二、词义辨析1. A. enhance2. A. present3. A. interact请确保在练习时仔细审题，理解每个选项的含义，以提高解题准确率。
大学英语四级-大学英语六级-cloze 选词填空-专项训练共12套
大学英语六级-cloze 专项训练Cloze 5 (10 minutes)CET 6 2014/6-1For investors who desire low risk and guaranteed income, US government bonds are a secure investment because these bonds have the financial backing and full faith and credit of the federal government. Municipal bonds, also secure, are offered by local governments and often have___ 36___such as tax-free interest. Some may even be___37___. Corporate bonds are a bit more risky.Two questions often___38___first-time corporate bond investors. The first is “If I purchase a corporate bond, do I have to hold it until the maturit y date?” The answer is no. Bonds are bought and sold daily on___39___securities exchanges. However, if you decide to sell your bond before its maturity date, you’re not guaranteed to get the face value of the bond. For example, if your bond does not have___40___ that make it attractive to other investors, you may be forced to sell your bond at a___ 41___, i.e., a price less than the bond's face value. But if your bond is highly valued by other investors, you may be able to sell it at a premium, i. e ., a price above its face value. Bond prices generally___42___inversely (相反地) with current market interest rates. As interest rates go up, bond prices fall, and vice versa (反之亦然）. Thus, like all investments, bonds have a degree of risk.The second question is “ H ow can I___43___the investment risk of a particular bond issue?”Standard & Poor's and Moody’s Investors Service rate the level of risk of many corporate and government bonds. And___44___, the higher the market risk of a bond, the higher the interest rate. Investors will invest in a bond considered risky only if the ___45___ return is high enough.注意：此部分试题请在答题卡2作答。
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大学英语四六级考试选词填空专项训练题（1）A department store’s the land upon which the building is located, the labor of the employees, (1) ______ in the form of building, equipment and merchandise, and the management skills of the store managers. On a farm, the operation system is the transformation that occurs when a farmer’s (2) ______ (land, equipment, labor, etc.) are converted into such outputs as corn, wheat or milk. The exact form of the conversion process (3) ______ from industry to industry, but it is an (4) ______phenomenon that exists in every industry. Economists refer to this (5) ______ of resources into goods and services as the production function. For all operation systems, the general goal is to create some kind of value-added outputs that are worth more to consumers than just the sum of the inputs. To the consumers, the resulting products (6) ______ utility due to the form, the time, or the place of their availability from the conversion process.However, the process is subject to random changes. Unplanned or uncontrollable influences may cause the actual output to differ from planned output. Random fluctuations can arise from external disruption (fire, floods or lightning, for example) or from (7) ______ problems inherent in the conversion process. Inherent variability of equipment, material imperfections, and human errors all affect output quality (8)______. In fact, random variations are the rule rather than the exception in production processes; therefore, (9) _____ variation becomes a major management task.The function of the feedback is to provide (10) ______ linkages. Without some feedback of information, cannot control operations because they don' t know the results of their directions.注意：此部分试题在答题卡2上作答。
（2）Once the world embraced the automobile, the days of depending on horses, bicycles, ferries, and trains quickly slipped into the past. People were __11__ with the speed of the automobile but they were also enjoying the personal freedom that the automobile gave them.Owning a car gave people the freedom to go anyplace a road __12_. This allowed people to and at their own __13__. This independence gave the car a popular edge over buses and trains. The popularity of the automobile made it the __14__ of the transportation system. The automobile changed our lives when it created a giant industry that offered more and more jobs. The automobile made it possible for people to live in areas __15__ from their work place. This caused cities to grow and made suburban living more convenient. Of course, with more places to go, more __16__ roads had to be built. The automobile caused a __17__ effect.Jobs increased, industries grew, new industries developed, and cities appeared. Today the automobile industry continues to offer many __18__. Jobs are plentiful in this industry and improvements continue to be made to the automobile with new technologies.We have come a long way from that first __19__ carriage because of the cooperative efforts ofmany people in the last century. It will be interesting to see what the future holds for the automobile. We have already seen signs of the use of solar energy in this area. As long as man has a brain, the future of the automobile is __20__.A) backbone I) opportunities B) infinite J) snowball C) further K) definiteD) background L) developed E) led M) farther F) enjoyed N) impressedG) horseless O) pace H) developing(3)The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the --21-- computer in business class. In the last 15 years, pilots have reported well over 100 --22-- that could have been caused by electromagnetic interference. The source of this interference --23-- unconfirmed, but increasingly, experts are pointing the blame at portable electronic device such as portable computers, radio and cassette players and mobile telephones.RTCA, an organization which advises the aviation（航空）industry, has recommended that all airlines ban（禁止）such devices from being used during “ --24-- ” stages of flight, --25-- take-off and landing. Some experts , calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are --26-- to enforce a total ban, given that many passengers want to work during flights.The difficulty is --27-- how electromagnetic fields might affect an aircraft’s computers. Experts know that portable device emit radiation which --28-- those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not. The fact that aircraft may be vulnerable（易受损的）to interference raises the risk that terrorists may use radio systems in order to damage navigation --29-- . As worrying, though, who can’t选词填空参考答案：（1）1.B2.M3.E4.J5.H6.A7.L8. F9. k 10.O（2）11. N 12. E 13. O 14. A 15. M 16. L 17. J 18. I 19. G 20. B（3）21. I 2 2. B 23. D 24. E 25. F 26. G 27. K 28. M 2 9. N 30. O。