新GRE Issue53
新GRE issue作文题目
1.As people rely more and more on technology to solve problems, the ability of humans tothink for themselves will surely deteriorate2.To understand the most important characteristics of a society, one must study its majorcities.cational institutions have a responsibility to dissuade students from pursuing fields ofstudy in which they are unlikely to succeed4.Scandals are useful because they focus our attention on problems in ways that no speaker orreformer ever could5.Claim: governments must ensure that their major cities receive the financial support theyneed in order to thriveReason: it is primarily in cities that a nation`s cultural traditions are preserved and generated 6. A nation should require all of its students to study the same national curriculum until theyenter college7.Some people believe that government funding of the arts is necessary to insure that the artscan flourish and be available to all people. Others believe that government funding of the arts threatens the integrity of the arts8.Claim: in any field-business, politics, education, government-those in power should stepdown after five yearsReason: the surest path to success for any enterprise is revitalization through new leadership 9.In any field of endeavor, it is impossible to make a significant contribution without first beingstrongly influenced by past achievements within that field10.Nations should pass laws to preserve any remaining wilderness area in their natural state,even if these areas could be developed for economic gain11.People`s behavior is largely determined by forces not of their own makingernments should offer a free university education to any student who has been admittedto a university but who cannot afford the tuition13.Universities should require every student to take a variety of courses outside the student`sfield of study14.A nation should require all of its student to study the same national curriculum until theyenter collegecation institutions should actively encourage their students to choose fields of study thatwill prepare them for lucrative careers16.Some people believe that in order to be effective, political leaders must yield to publicopinion and abandon principle for the sake of compromise. Others believe that the most essential quality of an effective leader is the ability to remain consistently committed to particular principles and objects17.Formal education tends to restrain our minds and spirits rather than set them free18.The well being of a society is enhanced when many of its people question authorityernments should focus on solving the immediate problems of today rather than on tryingto solve the anticipated problems of the future20.Some people believe that college students should consider only their own talents andinterests when choosing a field of study. Others believe that college students should base their choice of a field of study on the availability of jobs in that fieldws should be flexible enough to take account of various circumstances, times, and places22.Claim: the best way to understand the character of a society is to examine the character ofthe men and women that the society choose as its heroes or its role modelsReason: heroes and role models reveal a society`s highest idealsernments should place few, if any, restrictions on scientific research and development24.The best way to teach is to praise positive actions and ignore negative onesernments should offer college and university education free of charge to all student26.The luxuries and conveniences of contemporary life prevent people from developing intotruly strong and independent individuals27.In any field of inquiry, the beginner is more likely than the expert to make importantcontributions28.The surest indicator of a great nation is represented not by the achievements of its rulers,artists, or scientists, but by the general welfare of its people29.The best way to teach-whether as an educator, employer, or parent-is to praise positiveactions and ignore negative ones30.Teachers` salaries should be based on their students` academic performance31.Society should make efforts to save endangered species only if the potential extinction ofthose species is the result of human activities32.College students should base their choice of a field of study on the availability of jobs in thatfield33.As we acquire more knowledge, things do not become more comprehensible, but morecomplex and mysterious34.In any situation, progress requires discussion among people who have contrasting points ofviewcational institutions should dissuade student from pursuing field of study in which theyare unlikely to succeedernments should not fund any scientific research whose consequences are unclear37.Society should identify those children who have special talents and provide training for themat an early age to develop their talent38.It is primarily through our identification with social groups that we define ourselves39.College student should be encouraged to pursue subject that interest them rather than thecourses that seem most likely to lead to jobs40.Claim: when planning courses, educators should take into account the interests andsuggestions of their studentsReason: students motivated to learn when they are interest in what they are studying41.The greatness of individuals can be decided only by those who live after them, not by theircontemporaries42.Students should always question what they are taught instead of accepting it passively43.The increasingly rapid pace of life today causes more problems than it solves44.Claim: it is no longer possible for a society to regard any living man or woman as a heroReason: the reputation of anyone who is subjected to media scrutiny will eventually be diminishedpetition for high grades seriously limits the quality of learning at all levels of education46.Universities should require every student to take a variety of courses outside the student`sfield of studycators should find out what students want included in the curriculum and then offer it tothemcators should teach facts only after their students have studiesd the ideas, trends, andconcepts that help explain those facts49.Claim: we can usually learn much more from people whose views we share than from thosewhose views contradict our ownReason: disagreement can cause stress and inhibit learningernment officials should rely on their own judgment rather than unquestioningly carryout the will of people they serve51.Young people should be encouraged to pursue long-term, realistic goals rather than seekimmediate fame and recognition52.The best way to teach is to praise positive actions and ignore negative ones53.If a goal is worthy, then any means taken to attain it are justifiable54.In order to become well-rounded individuals, all college students should be required to takecourses in which they read poetry, novels, mythology, and other types of imaginative literature55.In order for any work of art-for example, a film, a novel, a poem, or a song-to have merit, itone question that we come across the answer to another56.Many important discoveries or creations are accidental: it is usually while seeking the answerto one question that we come across the answer to another57.The main benefit of the study of history is to dispel the illusion that people living now aresignificantly different from people who lived in earlier times58.Learning is primarily a matter of personal discipline; students cannot be motivated by schoolor college alone59.Scientists and other researchers should focus their research on areas that are likely to benefitthe greatest number of people60.Politicians should pursue common ground and reasonable consensus rather than elusiveideals61.People should undertake risky action only after they have carefully considered itsconsequences62.Leaders are created by the demands that are places on them63.There is little justification for society to make extraordinary efforts-especially at a great costin money and jobs-to save endangered animal or plant species64.The human mind will always be superior to machines because machines are only tools ofhuman minds65.Every individual in a society has a responsibility to obey just laws and to disobey and resistunjust laws66.People who are the most deeply committed to an idea or policy are also the most critical of it67.Some people believe that society should try to save every plant and animal species, despitethe expense to humans in effort, time and financial well-being. Others believe that society need not make extraordinary efforts, especially at a great cost in money and jobs, to save endangered species68.Some people believe that the purpose of education is to free the mind and the spirit. Othersbelieve that formal education tends to restrain our minds and spirits rather than set themfree69.Some people believe it is often necessary, even desirable, for political leaders to withholdinformation from the public. Others believe that the public has a right to be fully informed 70.Claim: universities should require every student to take a variety of courses outside thestudent`s major field of studyReason: acquiring knowledge of various academic disciplines is the best way to become truly educated71.Young people should be encouraged to pursue long-term, realistic goals rather than seekimmediate fame and recognitionernments should not fund any scientific research whose consequences are unclear73.College and universities should require all faculty to spend time working outside theacademic world in professions relevant to courses they teach74.Knowing about the past cannot help people to make important decisions today75.In this age of intensive media coverage, it is no longer possible for a society to regard anyliving man or woman as a hero76.We can usually learn much more from people whose views we share than from peoplewhose views contradict our own77.The most effective way to understand contemporary culture is to analyze the trends of itsyouth78.People`s attitudes are determined more by their immediate situation or surroundings thanby society as a whole79.Claim: the best test of an argument is its ability to convince someone with an opposingviewpointReason: only by being forced to defend an idea against the doubts and contrasting views of others does one really discover the value of idea80.Nations should suspend government funding for the arts when significant numbers of theircitizens are hungry or unemployed81.All parents should be required to volunteer time to their children`s schools82.Colleges and universities should require their students to spend at least one semesterstudying in a foreign country83.Teachers` salaries should be based on the academic performance of their students84.It is no longer possible for a society to regard any living man or woman as a hero85.Some people believe that in order to thrive, a society must put its own overall success beforethe well-being of its individual citizens. Others believe that the well-being of a society can only be measured by the general welfare of all its people86.Some people believe that government officials must carry out the will of the people theyserve. Others believe that officials should base their decisions on their own judgment87.Claim: any piece of information referred to as a fact should be mistrusted, since it may wellbe proven false in the futureReason: much of the information that people assume is factual actually turns out to be inaccurate88.Claim: nations should suspend government funding for the arts when significant numbers oftheir citizens are hungry or unemployedReason: it is inappropriate-and, perhaps, even cruel-to use public resourcesto fund the artswhen people`s basic needs are not being met89.Claim: many problems of modern society cannot be solves by laws and the legal systemReason: laws cannot change what is in people`s hearts or mindscators should take students` interests into account when planning the content of thecourses they teach91.The primary goal of technological advancement should be to increase people`s efficiency sothat they have more leisure timecators should based their assessment of students` learning not on students` grasp of factsbut on the ability to explain the idea, trends, and concepts that those facts illustrate93.Unfortunately, in contemporary society, creating an appealing image has become moreimportant than the reality or truth behind that image94.The effectiveness of a country`s leaders is best measured by examining the well-being of thacountry`s citizen95.All parents should be required to volunteer time to their children`s schools96.A nation should require all of its students to study the same national curriculum until theyenter college97.College and universities should require their students to spend at least one semesterstudying in a foreign countrycational institutions should actively encourage their students to choose fields of study inwhich jobs are plentiful99.People`s behavior is largely determined by force not of their own making100.Colleges and universities should require their students to spend at least one semester studying in a foreign country101.Although innovations such as video, computers, and the internet seem to offer schools improves methods for instructing students, these technologies all too often distract from real learning102.Universities should require every student to take a variety of courses outside the student`s field of study103.The best idea arise from a passionate interest in commonplace things104.To be an effective leader, a public official must maintain the highest ethical and moral standard105.Claim: imagination is a more valuable asset than experienceReason: people who lack experience are free to imagine what is possible without the constraints of established habits and attitudes106.In most professions and academic fields, imagination is more important than knowledge 107.To be an effective leader, a public official must maintain the highest ethical and moral standards108.Critical judgment of work in any given field has little value unless it comes from someone who is an expert in that field109.Some people believe that scientific discoveries have given us a much better understanding of the world around us. Others believe that science has revealed to us that the world is infinitely more complex than we ever realized110.Critical judgment of work in any given field has little value unless it comes from someone who is an expert in that field111.In any profession-business, politics, education, government-those in power should step down after five years112.Requiring university students to take a variety of courses outside their major field of study is the best way to ensure that students become truly educated113.Claim: the surest indicator of a great nation is not the achievements of its rulers, artists, or scientistReason: the surest indicator of a great nation is actually the welfare of all its people114.Any leader who is quickly and easily influenced by shifts in popular opinion will accomplish littleernment officials should rely on their own judgment rather than unquestioningly carry out the will of the people whom they serve116.A nation should require all of its students to study the same national curriculum until they enter college117.It is primarily in cities that a nation`s cultural are generated and preserved118.We can learn much more from people whose views we share than from people whose views contradict our own119.When old buildings stand on ground that modern planners feel could be better used for modern purposes, modern development should be given precedence over the preservation of historic buildings120.Claim: the surest indicator of a great nation must be the achievements of its rulers, artists, or scientistsReason: great achievements by a nation`s rulers, artists, or scientists will ensure a good life for the majority of that nation`s people121.Some people claim that you can tell whether a nation is great by looking at the achievements of its rulers, artists, or scientists. Other argue that the surest indicator of a great nation is, in fact, the general welfare of all its people122.The best way to understand the character of a society is to examine the character of the men and women that the society chooses as its heroes or its role models123.The best way for a society to prepare its young people for leadership in government, industry, or other fields is by instilling in them a sense of cooperation, not competition 124.All college and university students would benefit from spending at least one semester studying in a foreign country125.Some people claim that a nation`s government should preserve its wilderness areas in their natural state. Others argue that these areas should be developed for potential economic gain 126.In most professions and academic fields, imagination is more important than knowledge 127.The surest indicator of a great nation is not the achievements of its rulers, artists, or scientists, but the general well-being of all its people128.Some people argue that successful leaders in government, industry, or other fields must be highly competitive. Other people claim that in order to be successful, a leader must be willing and able to cooperate with others129.College students should base their choice of a field of study on the availability of jobs in that field130.Some people believe that corporations have a responsibility to promote the well-being of the societies and environments in which they operate. Others believe that the onlyresponsibility of corporation, provided they operate within the law, is to make as much as money as possible131.Claim: researchers should not limit their investigations to only those areas in which they expect to discover something that has an immediate, practical applicationReason: it is impossible to predict the outcome of a line of research with any certainty 132.Some people believe that our ever-increasing use of technology significantly reduces our opportunities for human interaction. Other people believe that technology provides us with new and better ways to communicate and connect with one another133.Claim: knowing about the past cannot help people to make important decisions today Reason: the world today is significantly more complex than it was even in the relatively recent past134.Claim: knowing about the past cannot help people to make important decisions today Reason: we are not able to make connections between current events and past events until we have some distance from bothcational institutions should actively encourage their students to choose fields of study that will prepare them for lucrative careerscational institutions should actively encourage their students to choose fields of study in which job are plentifulcational institutions have a responsibility to dissuade students from pursuing fields of study in which they are unlikely to succeed138.Some people believe that competition for high grades motivates students to excel in the classroom. Others believe that such competition seriously limits the quality of real learning 139.Claim: major policy decisions should always be left to politicians and other government expertReason: politicians and other government experts are more informed and thus have better judgment and perspective than do members of the general public140.Some people believe that universities should require every student to take a variety of courses outside the student`s field of study. Others believe that universities should not force students to take any courses other than those that will help prepare them for jobs in their chosen fields141.It is more harmful to compromise one`s own beliefs than to adhere to them142.Claim: colleges and universities should specify all required course and eliminate elective courses in order to provide clear guidance for studentsReason: college students-like people in general-prefer to follow directions rather than make their own decisions143.No field of study can advance significantly unless it incorporates knowledge and experience from outside that field144.True success can be measured primarily in terms of the goals one sets for oneself145.The general welfare of a nation`s people is a better indication of that nation`s greatness than are the achievements of its rulers, artists, or scientists146.The best test of an argument is the argument`s ability to convince someone with an opposing viewpoint147.The effectiveness of a country`s leaders is best measured by the examining the well-being of that country`s citizens148.Nations should pass laws to preserve any remaining wilderness areas in their natural state 149.In any field-business, politics, education, government-those in power should be required to step down after five years。
A review of research progress on CO2 capture, storage, and utilization
2A review of research progress on CO capture,storage,and utilization in 34Q156789111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576with 58%of the sources being located within the east and south 77central regions.The contributions of large point sources in each 78sector to total CO 2emissions in China are listed in Fig.2[13].With 79rapid development of energy technologies in the 21st century,fos-80sil fuels,especially coal,will still remain the dominant energy0016-2361/$-see front matter Ó2011Elsevier Ltd.All rights reserved.doi:10.1016/j.fuel.2011.08.022⇑Corresponding authors.Q2Address:State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China (Y.Sun).Tel.:+863514049612;fax:+863514041153.E-mail addresses:zhaoning@ (N.Zhao),weiwei@ (W.Wei),yhsun@ (Y.Sun).Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022source in China for decades to come.Chinese government recognized the huge challenge of CO 2abatement while satisfying ever-increasing energy demand.In the light of this situation,November 26,2009,China officially announced action to control emissions per unit of GDP by 40–45%by 2020,based on 86levels [14].To address this,China is undertaking a range of techni-87cal research and development projects on CCSU,including the na-88tional fundamental research and high-tech programs,as well as a 89large number of international programs.The CCS projects,fun-90dings,and research institutes in China is shown in Table 1.91Since 1990,China had carried out a series of climate change 92projects under framework of national programs,such as China’s 93National Climate Change Program (CNCCP),National Hi-tech R&D949596979899100101102103104105106107108109110111112113114115116117118119120121cooperation with international on CCSU.On the basis of the finical 122support of both Chinese government and CAS,a lot of progresses 123were obtained in several academic institutes in CAS including 124CO 2capture;enhanced oil recovery (EOR)and enhanced coal bed 125methane (ECBM)projects as well as CO 2chemical utilizations.This 126brief review has covered the research progress in CO 2capture,stor-127age,and utilization in CAS.2.The contributions of large point sources in each sector to overall total emissions in China [12].Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022128129130131132133134135136137aration,and cryogenic fractionation.138 2.1.Amine-based scrubbing solvent139Amine scrubbing is a well known technology for capturing CO 2140from flue gas,which has been widely deployed on a large scale 141across several industries [25–28].The industrially most important142143144145146147148149150151152the environment [30].1532.2.Ionic liquids154Therefore,a nonvolatile solvent that could facilitate CO 2capture 155without the loss of solvent into the gas stream would be advanta-156geous.Ionic liquids (ILs)are commonly defined as liquids whichTable 1CCS projects,fundings,and research institutes in China.China and international cooperation on CCS projects and fundingsResearch institutes aBNLMS–CAS IET–CAS RCEES–CAS ICC–CAS IPE–CAS LICP–CAS CIAC–CAS National High Technology Research and Development Program of China (863)SIC–CAS National Key Basic Research and Development Program of China (973)IGG–CAS China’s National Climate Change Program (CNCCP)IAP–CAS L.L Q1i et al./Fuel xxx (2011)xxx–xxx3Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022157are composed entirely of ions with a melting point of less than 158100°C.ILs have many unique properties in comparison to other 159solvents as extremely low volatility,broad range of liquid temper-160ature,high thermal and chemical stability,and tunable physico-161chemical characteristics and as a result,ILs have been considered 162as a potential substitute of aqueous amine solutions for CO 2cap-163ture [31–34].164In Changchun Institute of Applied Chemistry,Chinese Academy 165of Sciences (CIAC–CAS),a novel dissolving process for chitin and 166chitosan was developed by using the ionic liquid 1-butyl-3-167methyl-imidazolium chloride ([Bmim]Cl)as a solvent for capturing 168and releasing CO 2.The results showed that the chitin/IL and chito-169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201tant to consider the maximum mass loading when considering the 202support of ILs on inert substrates –yes,these can enhance the ILs’203ability to take up CO 2,but at the expense of cycling an inert sorbent 204round a thermal cycle.The ILs are also monstrously expensive,the 205complex structure,and high cost for preparation,compared to sim-206pler solvents such as MEA or ammonia.Thus,the potential for 207improving CO 2solubilities and reducing cost of the ILs still needs 208to be studied for future applications.In 2010,in Beijing National 209Laboratory for Molecular,Chinese Academy of Sciences (BNLMS–210CAS),Zhang and co-workers first reported on CO 2capture by 211hydrocarbon surfactant liquids.It also found that CO 2had high sol-212ubility in low-cost hydrocarbon surfactant liquids,and the ab-213and the 214215216such as corrosion,at 217regenerable solid sor-218concept for CO 2recov-219into amine-based and 220221222with various so-223as silica gels,activated 224have been shown to phys-225enhance the sorp-226of many amine-based 227In Dalian Institute of 228(DICP–CAS),Zhang 229silica foam (MCF)materi-230with polyethyl-231The results showed that 232having large window 2333.45mmol CO 2/g sorbent 234In Institute of Coal Chem-235Zhao et al.studied 236materials derived 237sorption capabili-238°C and 1bar.The as-pre-239selectivity for CO 2over 240prepared a series of CO 2241pentamine (TEPA)was 242(PMHS)based mesopor-243The highest absorption 24475°C with the 10vol.%245was higher than most 246Desorption could 247in 1h [46].248of amine-based sorbent 249capacity of solid sorbent.250have poor mechanical 251amine-based sorbents 252and require signifi-253processes.254255sorbents for CO 2capture 256Alkali earth metal,such 257form alkali earth metal-258vapor at high tempera-259and post-combus-260simplified process flow 261the calcium looping 262vessel (the carbonator)4L.L Q1i et al./Fuel xxx (2011)xxx–xxxPlease cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022the carbonation reaction between CO 2and solid CaO separates CO from coal-combustion flue gas at a temperature between 600°and 650°C.The CaCO 3formed is then passed to another vessel (the calciner),where it is heated to reverse the reaction (900–950°C),releasing the CO 2suitable for sequestration,and regener-ating the CaO-sorbent which is then return to the carbonator.The carbonation process is exothermic,which is matched with the temperature of a steam cycle,allowing recuperation of the heat.In IPE–CAS,the decomposition conditions of CaCO 3particles for CO 2capture in a steam dilution atmosphere (20–100%steam 307308309310311312313314315316317318319320321322323324325326327328329330332333334335336337338339340341342343344345346347348349350351352353354355Fig.3.The process flow diagram of post-combustion capture using the calcium looping cycle [47,48].Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022strength (998N/cm 2)and exhibited good stability in multiple cy-cles [74,75].Furthermore,the application of a conceptual CO 2cap-ture process using this sorbent was proposed for an existing coal fired power plant [75].However,to optimize CO 2sorption capacity,understand of the interaction between CO 2and the sorbent need to be studied in the further work.Moreover,much work remains before the technology fluidized bed CO 2capture can be commercialized.Simulta-neously,the numerical simulation based on the computational fluid 365dynamics (CFD)method will become a research focus in the future.366 3.CO 2storage367Following the capture and transport process,CO 2can be dis-368posed of in natural sites such as deep geological sequestration,369mineral carbonation,or ocean storage [76].There are three geolog-370ical formations that have also been recognized as major potential 371CO 2sinks:deep saline-filled sedimentary (DSFs),depleted oil 372natural gas reservoirs,and unmineable coal-seams.The geology 373also suggests possibilities for CO 2enhanced oil recovery (CO 374EOR),CO 2enhanced gas recovery (CO 2–EGR)and CO 2enhanced 375coal-bed methane recovery (CO 2–ECBM)projects [12].3763.1.Geological sequestration377Geological storage involves injecting CO 2at depths greater than 3781000m into porous sedimentary formations using technologies 379derived from the oil and gas industry [77].CO 2can be stored in 380supercritical state at depth below 800–1000m,which provides 381the potential for efficient utilization of the space,due to the li-382quid-like density of supercritical CO 2.The point at which CO 2Table 2Performance summary of K-based sorbents capturing CO 2.Material Temperature (°C)CO 2partial pressure (bar)e Total capacity (mmol CO 2/g sorbent)Method f Regenerature temperature (°C)Ref.K 2CO 3/AC a 600.01 1.95TCD g 150[62]K 2CO 3/SiO 2600.010.23TCD g –[62]K 2CO 3/USY 600.010.43TCD g –[62]K 2CO 3/CsNaX 600.01 1.35TCD g –[62]K 2CO 3/Al 2O 3600.01 1.93TCD g 350[62]K 2CO 3/CaO 600.01 1.11TCD g –[62]K 2CO 3/MgO 600.01 2.70TCD g 400[62]K 2CO 3/TiO 2600.01 1.89TCD g 150[62]K 2CO 3/Al 2O 3600.01 1.96TCD g >300[63]Re-KAl(I)30b 600.01 1.86TCD g <200[63]g Fig.5.The schematic diagram of experimental apparatus for the fluidized bed [74,75].6L.L Q1i et al./Fuel xxx (2011)xxx–xxxPlease cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022383transforms from critical to supercritical point is 31.1°C and 3847.38MPa [78].CO 2is injected usually in the supercritical form into 385the saline aquifer or depleted oil or gas reservoir.Four major clas-386ses of deep geologic reservoirs present within China have been 387identified and evaluated as candidates for the long-term storage 388of anthropogenic CO 2:deep saline-filled sedimentary (DSFs)for-389mations,depleted gas basins,depleted oil basins with potential 390for CO 2–EOR,and deep unmineable coal seams with potential for 391CO 2–ECBM.Fig.6shows the map of the combined location and ex-392tent of candidate geologic CO 2storage formations in China [13].393Because the CO 2industry is not mature,there are few active CO 2394storage projects which can provide site specific information;hence417China are also potential storage candidates.Recently,other re-418search has also focused on estimating the distance between CO 2419sources and potential sinks.Zheng et al.superimposed the loca-420tions of these 27facilities onto maps of sedimentary basins in each 421of the five regions of China (Huabei,Ordos,Dongbei,Yuwan,and 422Xinjiang).The majority of the candidate CO 2sources are found in 423the Ordos,Huabei and Dongbei regions [85].424The China–UK Near Zero Emissions Coal (NZEC)Initiative exam-425ined options for carbon (CO 2)capture,transport and geological 426storage in China,which was developed under the 2005EU–China 427NZEC Agreement that aims to demonstrate CCS in China and the 428EU [16,86–88].The NZEC Initiative has evaluated the potential to 429430431432433434435436437438439440441442443444445446447448449450451L.L Q1i et al./Fuel xxx (2011)xxx–xxx7Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022452Kailuan mining area (Hebei Province)and deep saline aquifers in 453the Jiyang Depression (Shandong province)[89,90].The results 454show that the Dagang oilfield is not suitable for large-scale storage,455though could be considered for EOR pilots.The Shengli oilfield was 456considered more promising for storage (472Mt in eight selected 457fields).Storage potential in the Kailuan mining area is 504,000458Mt adsorbed onto the coal and 38,100Mt void storage capacity.459However,the coals have low porosity and permeability that will af-460fect future energy resources [90].The Institute of Geology and Geo-461physics,Chinese Academy of Sciences (IGG–CAS)studied the 462potential for storage in the Jiyang Depression.The results revealed 463that Guantao Formation in the Jiyang Depression has good porosity 464and permeability 465areas was 4662010,in South China 467of Sciences 468storage capacity in 469the Pearl River 470CCS-related 471China [78].There 472saline formations 473tive storage 474including 60Mt in 475large for storaging 476in Guangdong in 477In a word,these 478age of CO 2in deep 479Although this is 480countries,it will 481and there was 482characteristics.483 3.1.2.CO 2–EOR484Although CO 2485oil recovery (EOR)486this process can be 487oil,the cost of CO 2,488the CO 2source [92].489the production of 490be an ideal option 49184commercial or 492tion worldwide [1].493been implemented 494Oil Corporation 495in the Daqing,496ernments of Japan 497out a project to 498plant in China into a 499duced from the 500that between 270501ered by using CO 2502including IGG–CAS 503three large oil fields 504oil reservoirs in the 505were suitable both 506found suitable for 507showed that the 508CO 2storage 509the oil recovery by steam injection has been already applied at Lia-510ohe oil field.Each single well,in average,had conducted 7.6times 511of steam injection-oil recovery processing for EOR propose.The to-512tal recovered oil amounts were 12.06Mt [92].Active oil producing 513fields where CO 2–EOR is technically possible provide credible 514opportunities to initiate CO 2storage demonstration projects.How-515ever,significant further investigations,including detailed site516appraisals would be necessary before such fields can be considered 517as technically and economically suitable for CO 2storage.5183.1.3.CO 2–ECBM519In a similar manner,ECBM recovery can be used to store CO 2520while improving methane recovery.A bright prospect of gas injec-521tion technology for ECBM production has been suggested by Chi-522nese engineers since the late 1990s [94].More recently,a joint 523venture was formed between the China United Coal Bed Methane 524Corporation and the Alberta Research Council of Canada to develop 525a project entitled ‘‘Development of China’s coalbed methane tech-526nology/CO 2sequestration’’[12].This project was initiated in March 527project was performed 528in the anthracitic coals of 529China [95],which is 530in China up to now 531at ICC–CAS in 2005532were investigated based 533An equipment simulated 534middle pressures was 535in coal seam,536behaviors were studied.537coal mine and salt-water 538four coals of various rank 539China were tested for 540one of the most impor-541process.The result 542capacities for methane 543>Bulianta coal >Zhangji 544adsorption isotherms 545lattice model [100].546given to estimate the 547[101],which was 548underground stress is so 5492and CH 4respectively 550the mechanical sta-551of the impact factors of 552stress could be obviously 553of the casing or by using 554and Young’s modulus 555China was also estimated 556prospecting data of coal 557and the replacement ratio 558different ranks,it is esti-559methane resources will 560technology is uti-561in coalbeds is about 562as the total CO 2emission 563also developed 564simulation of the CO 2–565is a lack of knowledge 566due to the complexity 567fluid transport processes.568will be the next 569570571Large amounts of CO 2can also be fixed by a process called min-572eral carbonation,which is natural or artificial fixation of CO 2into 573carbonates.It has been proposed as a promising CO 2sequestration 574technology e.g.the silicate rocks (calcium or magnesium)could be 575turned into carbonates by reacting with CO 2following this mech-576anism [8,105]:577ðMg ;Ca Þx Si y O x þ2y þx CO 2!x ðMg ;Ca ÞCO 3þy SiO 25798L.L Q1i et al./Fuel xxx (2011)xxx–xxxPlease cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639hanced by the fact that this method of storage is highly verifiable 640and unquestionably permanent,the grinding energy required to 641produce particles of the size required to react rapidly with the 642acids is large,and the residence times on the order of hours re-643quired to allow carbonation of the solids,via either route,is so long 644that immense reactors would be required,associating environmen-645tal concerns.Furthermore,mineral carbonation will always be646expensive than most applications of geological storage 647important gap in mineral carbonation is the lack of 648onstration plant.649Ocean storage650Captured CO 2also could help reduce the atmospheric 6516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836842685carbonic acid,which would be likely harmful to ocean organisms 686and ecosystems [17].Additionally,it is not known whether the 687public will accept the deliberate storage of CO 2in the ocean as part 688of a climate change mitigation strategy.The development of ocean 689storage technology is generally at a conceptual stage;thus,further 690research and development would be needed to make technologies 691available.3.Reaction mechanism for enhanced carbonation crystallization Q1Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022692693694695696697698699700701702703704705706707708709710711712713714715716717718719721722723the reaction [131–135],such as in ICC–CAS,Zhao et al.had reported 724a catalyst system composed of KI supported on metal oxides for 725cycloaddition of propylene oxide with CO 2.It was found that the 726activity of KI for cycloaddition was greatly enhanced by ZnO as both 727support and promoter,resulting in a high yield of propylene 728carbonate within a short reaction time.The mechanism is also pro-729posed (Scheme 4)[133].Recently,a large number of catalytic730systems,such as metal oxides,transition metal,ammonium 731well as main group complexes,were reported to be active 732reactions [136–139].In ICC–CAS,the efficient ultrasonic tech-733nique was used for the preparation of amine-functionalized porous 734catalysts for CO 2coupling with epoxide.According to 735study by Zhang and co-workers [140],the reaction conditions 736great influence on the performance and the silanols on the surface 737played an important role in the chemical fixation of CO 2.In addi-738they also proposed the possible reaction mechanism for 739coupling with epoxide over such type of catalysts (Scheme 5).740In recent years,ionic liquids as environmentally benign media 741organic synthesis and catalytic reaction significant progress 7427437447457467477487492750catalyst system without using additional organic solvents was 751achieved in excellent selectivity and TOF (5410h À1)[144].In 752IPE–CAS,an efficient Lewis acid/base catalyst composed of ZnCl 2/753PPh 3C 6H 13Br was developed and showed high activity and selectiv-754ity for the coupling reaction of CO 2and epoxide under the mild 755conditions [145].Sun et al.prepared a series of hydroxyl-function-756alized ionic liquids (HFILs)which showed efficient reactivity andScheme 4.The proposed diagram of reaction mechanism [133].Q1Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022780781782783784785786787788789790791792793794795796797798799800802803804805806807Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022CO 2þCH 4¼2CO þ2H 2841842In the past decade,a lot of researches have been devoted to the 843catalytic performance of noble metals,including Pt,Ru,Rh,Pd,844and Ir for this reaction [165–169].It showed that Rh and Ru845exhibited both high activity and stability in CH 4dry reforming,846while Pd,Pt and Ir were less active and prone to deactivation.847Nevertheless,considering the aspects of high cost and limitedPlease cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022848availability of noble metals,it is more practical to develop non-849noble metal catalysts which exhibited both high activity and pared with noble metals,Ni-based catalysts have been 851widely investigated because of their high activity and relatively 852low price [170–172].Nevertheless,application of Ni-based cata-853lysts in a large scale process is not so straightforward due to rapid 854carbon deposition,resulting in the deactivation of the catalyst 855[173].It was found that when Ni is supported on a alkaline earth 856metal oxide such as MgO,CaO,and BaO with strong Lewis basi-857city,carbon deposition can be attenuated or even suppressed 858[174]which is because that the support could promote chemi-859sorption of CO 2and thus,accelerated the reaction of CO 2and C 8608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968974.4.Reaction of CO 2with ethane and propane898Ethylene and propylene are basic raw material in the petrol-899chemical industry.Thermal cracking of hydrocarbons (such as eth-900ane)in the presence of steam is currently the main source of eth-901ylene [181,182].Nevertheless,steam cracking of ethane to 902ethylene is a highly endothermic process that must be performed 903at high temperatures,which means the consumption of a large 904amount of energy.The introduction of CO 2could reduce the extent 905of deep oxidation which results in many byproducts whereas eth-906ylene selectivity drops when oxygen is used as oxidant [183].907Thermodynamics analysis and experimental results have indi-908909910911912913915916917918919920921922923924925926927928929930931932933934935936938939940941L.L Q1i et al./Fuel xxx (2011)xxx–xxx13Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022969970971972973974975976977978979980981982983984985986987988990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.0221015DMC in supercritical phase was proposed in Scheme 11.Recently,developed a supported Cu-Ni/V 2O 5-SiO 2heterogeneous because the reaction can be carried out in a fixed-bed the side production of water molecules 10341035103610371038103910401041104210431044and theoretical approaches,which enable the development of 1045CO 2selective sorbents.Besides,the sorbent performance,lifetime,10461047104810491050105110521053105410551056105710581059106010611062106310641065Scheme 11.The proposed catalytic reaction mechanism Please cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.0221066of component costs,specific Chinese market conditions,and other 1067factors impacting costs of deployment in China will be important 1068to consider in greater detail.To propose the storage mechanism,1069monitoring,simulation,risk assessment,control methods as well 1070as engineering design will be studied in future.1071The utilization of CO 2to chemicals has attracted considerable 1072attention as a possible way to manufacture useful commercial 1073chemicals from CO 2in some specific locations (Scheme 12)[222].1074The utilization of CO 2as a raw material in the synthesis of chemi-1075cals was also conducted by CAS,including synthesis of cyclic car-1076bonate from CO 2and epoxide,reaction of CO 2and propylene 1077glycol (PG),CO 2reforming of CH 4,reaction of CO 2and ethane 1078and propane,CO 21079methyl carbonate 1080amount of CO 2can 1081to the order of 1082ent the typical 1083cations is only 1084laminates are used 1085of the materials can 1086and overall net 1087ation.1088and fundamental 1089lue-added chemicals 1090tive net carbon 1091moderate reaction 1092the energy or 1093clear,wind,1094also important to 1095 6.Uncited 1096[201].Q31097Acknowledgments1098This work was 1099vation Programme 1100323);the Ministry of 1101lic of China 1102Climate Change:1103Academy of 1104the Natural Science 1105References1106[1]Mikkelsen M,1107fixation and 11082010;3(1):43–81.1109[2]Xu XC,Song CS,1110separation from 111111121113[3]Shukla R,Ranjith P,1114and caprock 1115[4]Bredesen R,Jordal 1116generation with CO 1117[5]Barelli L,Bidini 1118sorption-enhanced 1119review.Energy 1120[6]Drage TC,1121adsorbents for CO 2capture in gasification.Energy Fuels 2009;23:2790–6.1122[7]Stewart C,Hessami M.A study of methods of carbon dioxide capture and1123sequestration –the sustainability of a photosynthetic bioreactor approach.1124Energy Convers Manage 2005;46:403–20.1125[8]Yang HQ,Xu ZH,Fan MH,Gupta R,Slimane RB,Bland AE,et al.Progress in1126carbon dioxide separation and capture:a review.J Environ Sci 11272008;20(1):14–27.1128[9]Khatri RA,Chuang SSC,Soong Y,Gray M.Thermal and chemical stability of1129regenerable solid amine sorbent for CO 2capture.Energy Fuels 11302006;20(4):1514–20.1131[10]Jin HG,Gao L,Han W,Hong H.Prospect options of CO 2capture technology1132suitable for China.Energy 2009:1–8.1133[11]Hashim H,Douglas P,Elkamel A,Croiset E.Optimization model for energy1134planning with CO 2emission considerations.Ind Eng Chem Res 11352005;44(4):879–90.1136[12]Meng KC,Williams RH,Celia MA.Opportunities for low-cost CO 2storage1137demonstration projects in China.Energy Policy 2007;35(4):2368–78.1138[13]Dahowski RT,Li X,Davidson CL,Wei N,Dooley JJ,Gentiled RH.A preliminary1139cost curve assessment of carbon dioxide capture and storage potential in 1140China.Energy Procedia 2008;1(1):2849–56.1141[14]Wang R,Liu WJ,Xiao LS,Liu J,Kao W.Path towards achieving of China’s 20201142carbon emission reduction target –a discussion of low-carbon energy policies 1143at province level.Energy Policy 2011;39(5):2740–7.1144[15]China’s scientific &technological actions on climate change;2007.<http:///WebSite/CCChina/UpFile/File199.pdf >.1146Pearce J,et al.Carbon capture1147near zero emissions coal 11481149capture and storage for CO 211502010;38(9):5281–9.1151R,Mezghani K,Imashuku S,1152capture utilizing oxy-fuel 1153membrane systems.Int J 11541155and size effects of activated1156Ind Eng Chem Res 11571158to produce hydrogen with1159combustion.Int J Hydrogen 11601161combustion CO 2capture by1162Prog Energy Combust Sci 11631164DA,McMichael WJ.Carbon1165sorbents.Energy Fuels 11661167Park AHA,et al.High efficiency1168based on amine-functionalized 11691170Gimenez A,Sanchez-Biezma A,1171for low cost CO 2capture in 11722008;49(10):2809–14.1173organogels via ‘‘latent’’gelators.1174their ammonium carbamates.11751176and prediction of the solubility1177and mixed alkanolamine 11781179of the structural features1180of CO 2and regeneration in 11811182Svendsen HF.Modeling and1183in aqueous alkanolamine 1184Ind Eng Chem Res 11851186of products of the oxidative1187aqueous monoethanolamine 1188gases.Ind Eng Chem Res 11891190Galindo A,Jackson G,et al.An1191Energy Environ Sci 11921193and thermodynamic11941-n-butyl-3-methylimidazolium 11951196High-pressure phase behavior1197ionic liquids.J Phys Chem B 11981199JF.Anion effects on gas12001201liquids for post-combustion CO 212021203dissolved in ionic liquids as12041205W,Zhang XP.Dual amino-1206for CO 2capture.Chem Eur J 12071208[37]Zhang JM,Zhang SJ,Dong K,Zhang YQ,Shen YQ,Lv XM.Supported absorption1209of CO 2by tetrabutylphosphonium amino acid ionic liquids.Chem Eur J 12102006;12(15):4021–6.1211[38]Sairi NA,Yusoff R,Alias Y,Aroua MK.Solubilities of CO 2in aqueous N-1212methyldiethanolamine and guanidinium trifluoromethanesulfonate ionic 1213liquid systems at elevated pressures.Fluid Phase Equilibria 2011;300(1–12142):89–94.1215[39]Zhang JL,Han BX,Zhao YJ,Li JS,Hou MQ,Yang GY.CO 2capture by1216hydrocarbon surfactant liquids.Chem Commun 2011;47(3):1033–5.16L.L Q1i et al./Fuel xxx (2011)xxx–xxxPlease cite this article in press as:L Q1i L et al.A review of research progress on CO 2capture,storage,and utilization in Chinese Academy of Sciences.Fuel(2011),doi:10.1016/j.fuel.2011.08.022。
GRE Issue题库分类大全【范本模板】
是非判断类InstructionWrite a response in which you discuss theextent to which you agree or disagree with the statement and explain your reasoningfor the position you take。
In developing and supporting your position, youshould consider ways in which the statement might or might not hold true andexplain how these considerations shape your position。
指导语：文章中讨论你是在多大程度上同意或者不同意题目的论点，并解释你选取这一立场的原因。
在发展及支持你的论点时，你应该考虑那些使得论点成立或者不成立的方面，并解释你的这些考虑是如何使其形成你所持有的观点的.1。
As people rely more and more on technology to solve problems, the ability of humans to think for themselves will surely deteriorate. 随着人们越来越依靠于技术来解决问题,人类自己独立思考的能力会确定无疑地退化.2. To understand the most important characteristics of a society，one must study its major cities。
想理解一个社会最为重要的特点，就必须研究这个社会的各主要城市。
9。
In any field of endeavor(努力）, it is impossible to make a significant contribution without first being strongly influenced by past achievements within that field.17. Formal education（正规教育）tends to restrain our minds and spirits rather than set them free.18。
GREIssue思路解析5篇
GREIssue思路解析5篇突破GRE考试难点:GRE Issue思路解析社会与文化类研究社会的方法_ _2_. Claim: The best way to understand the character of a society is toe_amine the character of the men and women that the society chooses as itsheroes or its role models.Reason: Heroes and role models reveal a society s highest ideals.Write a response in which you discuss the e_tent to which you agree ordisagree with the claim and the reason on which that claim is based.先说reason:英雄确实体现了社会的最高理念,它们体现了人们所追求的东西成功观(古今对比)(参见翻译练习)道德理想(中西对比或者古今对比)我们经常追捧的英雄人物是舍小家为大家,甚至连自己家庭都不顾,体现的是一种极端的利他主义要求;美国经常谈论的英雄人物确实为了保护家庭对抗坏人,显然更符合人性.再说claim:承认确实能够体现社会的最高追求,但是也意味着不能体现社会中残酷的现实生活水平,道德水平(对比英雄和平民)突破GRE考试难点:GRE Issue思路解析社会与文化类研究社会的方法_ _2_2. The best way to understand the character of a society is to e_aminethe character of the men and women that the society chooses as its heroes or itsrole models.Write a response in which you discuss the e_tent to which you agree ordisagree with the claim. In developing and supporting your position, be suretoaddress the most compelling reasons and/or e_amples that could be used tochallenge your position.突破GRE考试难点:GRE Issue思路解析社会与文化类研究社会的方法77. The most effective way to understand contemporary culture is to analyzethe trends of its youth.Write a response in which you discuss the e_tent to which you agree ordisagree with the statement and e_plain your reasoning for the position youtake. In developing and supporting your position, you should consider waysinwhich the statement might or might not hold true and e_plain how theseconsiderations shape your position.Born and raised in contemporary world, it is the young people who are themost deeply influenced by values of contemporary world.(男女.种族.取向平等,民主,世界化的理念)Many aspects of contemporary culture arise in recent years. Since most middle aged and elderly people are not used to changes, most of these newphenomena are attributed to a society’s young people, the group that is the mostready to embrace e_otic ideas and tosubvert e_isting patterns. As a result, by e_amining young people’s habitsand minds, we can know a lot about the trends of society. In fact, almost everynew fashion is led by young people, as can be seen from things they wear, programs they watch, language they use and eve n people they date…However, because of the limit in their financial power and politicalstrength, young people’s voice is quite weak in areas with high threshold, likepolitics and business. The organization and operation of these fields aredetermined by the social elites, who often have accumulated their resources andcultivated their sophistication for decades. For e_ample, in China’s politicalworld… (connection policy) 与年轻人的理想性反而是相矛盾的突破GRE考试难点:GRE Issue思路解析社会与文化类研究社会的方法5 _75. Claim: Governments must ensure that their major cities receive thefinancial support they need in order to thrive.Reason: It is primarily in cities that a nation s cultural traditions arepreserved and generated.Write a response in which you discuss the e_tent to which you agree or disagree with the claim and the reason on which that claim is based.大城市起源:人群聚集地,流传的文化要有足够的从事者,尤其古代只有大城市才有人群的密集.(建筑.歌剧.交响乐)小地方起源:浓厚乡土气息,地方特色,与众不同,非主流(牛仔.乡村音乐)Preservation大城市的保存:静态的(博物馆.艺术馆)小地方的保存:自然的传承(受到的文化冲击小,对比大城市)Claim:有道理,不管reason对不对,都应该提供大城市的发展,因为他仍然是社会经济.科技.政治.交通等的枢纽……突破GRE考试难点:GRE Issue思路解析社会与文化类研究社会的方法5 _7_7. It is primarily in cities that a nation s cultural traditions aregenerated and preserved.Write a response in which you discuss the e_tent to which you agree ordisagree with the statement and e_plain your reasoning for the position youtake. In developing and supporting your position, you shouldconsider ways in which the statement might or might not hold true ande_plain how these considerations shape your position.大城市起源:人群聚集地,流传的文化要有足够的从事者,尤其古代只有大城市才有人群的密集.(建筑.歌剧.交响乐)小地方起源:浓厚乡土气息,地方特色,与众不同,非主流(牛仔.乡村音乐)Preservation大城市的保存:静态的(博物馆.艺术馆)小地方的保存:自然的传承(受到的文化冲击小,对比大城市)Claim:有道理,不管reason对不对,都应该提供大城市的发展,因为他仍然是社会经济.科技.政治.交通等的枢纽……GRE Issue思路解析整合5篇。
开幕的近义词
开幕的近义词篇一：常见的近义词词组职称英语阅读题中常出现近义词替换的现象：把英文短文句子里的单词用其近义词构造意义对应的句子，复习中要关注阅读中常见的近义词词组：1.刚才：amomentago，justnow2.到达：arrivein/at，getto，reach3.立刻、马上：atonce，rightnow，rightaway，immediately4.有时：attimes，sometimes5.最后：atlast，intheend=finally6.在那个时候：atthatmoment，atthattime，justthen，7.在诊所：atthedoctor's，inthedoctor'soffice8.全世界：allovertheworld，acrosstheworld，aroundtheworld，intheworld9.总是：always，allthetime10.为……而着急：beanxiousabout=beworriedabout11.身体好：befine，bewell，beoK12.:开幕的近义词)..28.感冒：catch/getacold，haveacold29.在……做得好：dowellin，begoodat30.（去）购物：dotheshopping，goshopping31.把……捐赠给……：donate...to=giveaway...to32.喜欢做......：enjoydoingsth.，likedoingsth.33.希望某人做..…：expectsb.todo=wishsb.todo34.即使、尽管：eventhought，evenif35.过的愉快：haveagoodtime，enjoyoneself36.和……相处的好：geton/alongwellwithsb.37.放弃做......：giveupdoing,stopdoing38.用完：useup,runoutof39.继续：continue,goon40.担心……：worryabout....=beworriedabout....41.研究：research,study42.认为：think,guess,believe,suppose43.主题：topic,mainidea44.原因：reason,cause45.导致：resultin,leadto,cause,bringabout46.目的：aim,purpose47.阻止：stop,prevent48.破坏，损坏：harm,damage,doharmto,destroy,ruin49.表明：show,indicate50.几乎：nearly,almost51.大多数：most,amajorityof52.反对：argueagainst,beagainst,oppose,objectto53.发现：find,discover54.开始：begin,start,setout55.问题：problem,challenge，issue56.困难的：difficult,hard57.足够的：enough,adequate58.能够：can,could,may,might,beableto59.可能：possible,likely60.灭绝：dieout,extinct61.疾病：disease,disorder62.告诉：tell,inform63.因为：because,becauseof,dueto,for,since,owingto64.减少：reduce,decrease65.增加：increase,ontheincrease,rise66.令人吃惊的：surprising,amazing,shocking67.相同的：same,identical68.发生：happen,occur,takeplace69.患（病）：catch,suffer,have70.影响：effect,influence,affect篇二：柔美的近义词柔美的近义词考过新版GRE的考生都知道GRE考试改革后更侧重考查逻辑推断能力。
GRE考试写作范文Issue汇总
GRE考试写作范文Issue汇总今日我搜集了一些GRE issue 的优秀范文，快来一起学习吧，下面我就和大家共享，来观赏一下吧。
.GRE考试写作范文IssueMost people recognize the benefits of individuality, but the fact is that personal economic success requires conformity.Personal economic success might be due either to ones investment strategy or to ones work or career. With respect to the former, non-conformists with enough risk tolerance and patience invariably achieve more success than conformists. With respect to the latter, while non-conformists are more likely to succeed in newer industries where markets and technology are in constant flux, conformists are more likely to succeed in traditional service industries ensconced in systems and regulations.Regarding the sort of economic success that results from investing ones wealth, the principles of investing dictate that those who seek risky investments in areas that are out of favor with the majority of investors ultimately reap higher returns than those who follow the crowd. It is conformists who invest, along with most other investors, in areas that are currently the most profitable, and popular. However, popular investments tend to be overpriced, and in the long run their values willcome down to reasonable levels. As a result, given enough time conformists tend to reap lower rewards from their investments than nonconformists do.Turning to the sort of economic success that one achieves by way of ones work, neither conformists nor non-conformists necessarily achieve greater success than the other group.In consumer-driven industries, where innovation, product differentiation and creativity are crucial to lasting success, non-conformists who take unique approaches tend to recognize emerging trends and to rise above their peers. For example, Ted Turners departure from the traditional format of the other television networks, and the responsiveness of Amazons Jeff Bezos to burgeoning Internet commerce, propelled these two non-conformists into leadership positions in their industries. Particularly in technology industries, where there are no conventional practices or ways of thinking to begin with, people who cling to last years paradigm, or to the status quo in general, are soon left behind by coworkers and competing firms.However, in traditional service industries--such as finance, accounting, insurance, legal services, and health care--personal economic success comes not to non-conformists but rather to those who can work most effectively within the constraints of established practices, policies and regulations. Of course, a clever idea for structuring a deal, ora creative legal maneuver, might play a role in winning smaller battles along the way. But such tactics are those of conformists who are playing by the same ground rules as their peers; winners are just better at the game.In conclusion, non-conformists with sufficient risk tolerance and patience are invariably the most successful investors in the long run. When it comes to careers, however, while non-conformists tend to be more successful in technology-and consumer-driven industries, traditionalists are the winners in system-driven industries pervaded by policy, regulation, and bureaucracy.GRE考试写作范文IssueWhat society has thought to be its greatest social, political, and individual achievements have often resulted in the greatest discontent.I strongly agree that great achievements often lead to great discontent. In fact, I would assert more specifically that great individual achievements can cause discontent for the individual achiever or for the society impacted by the achievement, or both. Nevertheless, it is important to acknowledge that whether a great achievement causes great discontent can depend on ones personal perspective, as well as the perspective of time.With respect to individual achievements, great achievers are by nature ambitious people and therefore tend to be dissatisfied anddiscontent with their accomplishments-no matter how great. Great athletes are compelled to try to better their record-breaking performances; great artists and musicians typically claim that their greatest work will be their next one--a sign of personal discontent. And many child protégés, especially those who achieve some measure of fame early in life, later suffer psychological discontent for having peaked so early. Perhaps the paradigmatic modern example of a great achievers discontent was Einstein, whose theoretical breakthroughs in physics only raised new theoretical conundrums which Einstein himself recognized and spent the last twenty years of his life struggling unsuccessfully to solve.Individual achievements can often result in discontent on a societal level. The great achievement of the individual scientists responsible for the success of the Manhattan Project resulted in worldwide anxiety over the threat of nuclear annihilation--a form of discontent with which the worlds denizens will forever be forced to cope. Even individual achievements that at first glance would appear to have benefited society turn out to be causes of great discontent. Consider the invention of the automobile, along with the innovations in manufacturing processes and materials that made mass production possible. As a result we have become a society enslaved to our cars, relying on them as crutches not only for transportation but also for affording us a false sense ofsocioeconomic status. Moreover, the development of assembly-line manufacturing has served to alienate workers from their work, which many psychologists agree causes a great deal of personal discontent.Turning from individual achievements to societal, including political, achievements, the extent to which great achievements have caused great discontent often depends on ones perspective. Consider, for example, Americas spirit of Manifest Destiny during the 19th Century, or British Imperialism over the span of several centuries. From the perspective of an Imperialist, conquering other lands and peoples might be viewed as an unqualified success. However, from the viewpoint of the indigenous peoples who suffer at the hands of Imperialists, these so-called achievements are the source of widespread oppression and misery, and in turn discontent, to which any observant Native American or South African native could attest.The extent to which great socio-political achievements have caused great discontent also depends on the perspective of time. For example, F.D.R.s New Deal was and still is considered by many to be one of the greatest social achievements of the 20th Century. However, we are just now beginning to realize that the social-security system that was an integral part of F.D.R.s social program will soon result in great discontent among those workers currently paying into the system but unlikely to see any benefits after they retire.To sum up, I agree that great achievements, both individual and socio-political, often result in great discontent. Moreover, great individual achievements can result in discontent for both the individual achiever and the society impacted by the achievement. Nevertheless, in measuring the extent of discontent, we must account for varying personal and political perspectives as well as different time perspectives.GRE考试写作范文IssueThe well-being of a society is enhanced when many of its people question authority.The speaker asserts that when many people question authority society is better off. While I contend that certain forms of disobedience can be harmful to any society, I agree with the speaker otherwise. In fact, I would go further by contending that societys well-being depends on challenges to authority, and that when it comes to political and legal authority, these challenges must come from many people.Admittedly, when many people question authority some societal harm might result, even if a social cause is worthy. Mass resistance to authority can escalate to violent protest and rioting, during which innocent people are hurt and their property damaged and destroyed. The fallout from the 1992 Los Angeles riots aptly illustrates this point. The authority which the rioters sought to challenge was that of the legal justice system which acquitted police officers in the beating of RodneyKing. The means of challenging that authority amounted to flagrant disregard for criminal law on a mass scale--by way of looting, arson, and even deadly assault. This violent challenge to authority resulted in a financially crippled community and, more broadly, a turning back of the clock with respect to racial tensions across America.While violence is rarely justifiable as a means of questioning authority, peaceful challenges to political and legal authority, by many people, are not only justifiable but actually necessary when it comes to enhancing and even preserving societys well-being. In particular, progress in human rights depends on popular dissension. It is not enough for a charismatic visionary like Gandhi or King to call for change in the name of justice and humanity; they must have the support of many people in order to effect change. Similarly, in a democracy citizens must respect timeless legal doctrines and principles, yet at the same time question the fairness and relevance of current laws. Otherwise, our laws would not evolve to reflect changing societal values. It is not enough for a handful of legislators to challenge the legal status quo; ultimately it is up to the electorate at large to call for change when change is needed for the well-being of society.Questioning authority is also essential for advances in the sciences. Passive acceptance of prevailing principles quells innovation, invention, and discovery, all of which clearly benefit any society. In fact, the verynotion of scientific progress is predicated on rigorous scientific inquiry--in other words, questioning of authority. History is replete with scientific discoveries that posed challenges to political, religious, and scientific authority. For example, the theories of a sun-centered solar system, of humankinds evolution from other life forms, and of the relativity of time and space, clearly flew in the face of authoritative scientific as well as religious doctrine of their time. Moreover, when it comes to science a successful challenge to authority need not come from a large number of people. The key contributions of a few individuals---like Copernicus, Kepler, Newton, Darwin, Einstein, and Hawking---often suffice.Similarly, in the arts, people must challenge established styles and forms rather than imitate them; otherwise, no gemtinely new art would ever emerge, and society would be worse off. And again, it is not necessary that a large number of people pose such challenges; a few key individuals can have a profound impact. For instance, modern ballet owes much of what is new and exciting to George Ballanchine, who by way of his improvisational techniques posed a successful challenge to established traditions. And modern architecture arguably owes its existence to the founders of Germanys Bauhaus School of Architecture, which challenged certain authoritative notions about the proper objective, and resulting design, of public buildings.To sum up, in general I agree that when many people question authority the well-being of society is enhanced. Indeed, advances in government and law depend on challenges to the status quo by many people. Nevertheless, to ensure a net benefit rather than harm, the means of such challenges must be peaceful ones.GRE考试写作范文IssueIt is the artist, not the critic, who gives society something of lasting value.This statement asserts that art, not the art critic, provides something of lasting value to society. I strongly agree with the statement. Although the critic can help us understand and appreciate art, more often than not, critique is either counterproductive to achieving the objective of art or altogether irrelevant to that objective.To support the statement the speaker might point out the three ostensible functions of the art critic. First, critics can help us understand and interpret art; a critic who is familiar with a particular artist and his or her works might have certain insights about those works that the layperson would not. Secondly, a critics evaluation of an art work serves as a filter, which helps us determine which art is worth our time and attention. For example, a new novel by a best-selling author might nevertheless be an uninspired effort, and if the critic can call our attention to this fact we gain time to seek out more worthwhileliterature to read. Thirdly, a critic can provide feedback for artists; and constructive criticism, if taken to heart, can result in better work.However, reflecting on these three functions makes clear that the art critic actually offers very little to society.The first function is better accomplished by docents and teachers, who are more able to enhance a laypersons appreciation and understanding of art by providing an objective, educated interpretation of it. Besides, true appreciation of art occurs at the moment we encounter art; it is the emotional, even visceral impact that art has on our senses, spirits, and souls that is the real value of art. A critic can actually provide a disservice by distracting us from that experience.The critics second function that of evaluator who filters out bad art from the worthwhile is one that we must be very wary of. History supports this caution. In the role of judge, critics have failed us repeatedly. Consider, for example, Voltaires rejection of Shakespeare as barbaric because he did not conform to neo-classical principles of unity. Or, consider the complete dismissal of Beethovens music by the esteemed critics of his time. The art critics judgment is limited by the narrow confines of old and established parameters for evaluation. Moreover, critical judgment is often misguided by the ego; thus its value is questionable in any event.I turn finally to the critics third function: to provide useful feedbackto artists. The value of this function is especially suspect. Any artist, or anyone who has studied art, would agree that true art is the product of the artists authentic passion, a manifestation of the artists unique creative impulse, and a creation of the artists spirit. If art were shaped by the concern for integrating feedback from all criticism, it would become a viable craft, but at the same time would cease to be art.In sum, none of the ostensible functions of the critic are of much value at all, let alone of lasting value, to society. On the other hand, the artist, through works of art, provides an invaluable and unique mirror of the culture of the time during which the work was produced a mirror for the artists contemporaries and for future generations to gaze into for insight and appreciation of history. The art critic in a subordinate role, more often than not, does a disservice to society by obscuring this mirror.11。
新GRE 北美范文精析 Issue 53 范文精析
53 If a goal is worthy, then any means taken to attain it are justifiable.The speaker asserts that if a goal is worthy then any means of attaining that goal is justifiable. In my view this extreme position misses the point entirely. Whether certain meansare justifiable in reaching a goal must be determined on a case-by-case basis, by weighingthe benefits of attaining the goal against the costs, or harm, that might accrue along the way. This applies equally to individual goals and to societal goals.Consider the goal of completing a marathon running race. If I need to reduce my workinghours to train for the race, thereby jeopardizing my job, or if I run a high risk of incurring a permanent injury by training enough to prepare adequately for the event, then perhaps my goal is not worth attaining. Yet if I am a physically challenged person with the goal of completing a highly-publicized marathon, risking financial hardship or long-term injury might be worthwhile, not only for my own personal satisfaction but also for the inspiration that attaining the goal would provide many others. Or consider the goal of providing basic food and shelter for an innocent child. Anyone would agree that this goal is highly worthy--considered apart from the means used to achieve it. But what if those means involve stealing from others? Or what if they involve employing the child in a sweatshop at the expense of educating the child? Clearly, determining the worthiness of such goals requires that we —based on our own conscience, value system, and notions of fairness and equity. On a societal level we determine the worthiness of our goals in much the same way —by weighing competing interests. For instance, any thoughtful person would agree that reducing air and water pollution is a worthy societal goal; dean air and water reduce the burden on our health-care resources and improves the quality of life for everyone in society. Yet to attain this goal would we be justified in forcing entire industries out of business, thereby running the risk of economic paralysis and widespread unemployment? Or consider America's intervention in Iraq's invasion of Kuwait. Did our dual interest in a continuing flow of oil to the West and in deterring a potential threat against the security of the world justify our committing resources that could have been used instead for domestic social-welfare programs--or a myriad of other productive purposes? Both issues underscore the fact that the worthiness of a societal goal cannot be considered apart from the means and adverse consequences of attaining that goal. In sum, the speaker begs the question. The worthiness of any goal, whether it be personal or societal, can be determined only by weighing the benefits of achieving the goal against its costs--to us as well as others.作者的这种改写比较简单 对于语言水平一般的同学可以模仿这句话清晰地表达了作者的观点这个体现了范围拆分 个人和社会这里作者在句首就开始 举例子，这种写法并 不推荐给大家 我们在日常写作是还是需要有一句中心句能够 有效的概括全段的内容 可以稍微抽象一点这个reasoning很好，表达精炼，且突出了重点-- 怎么样评判个人的目标是有价值的这个部分是对个人目标的递进，受影响的是国家内容；同时这个例子的分析很到位，某项政策的利弊-- 大家也可以写类似的例子这个就递进到了国家层面，中心句 依然需要修改一下这个例子的分析不到位 没有具体阐明什么地方是有价值的，什么地方是没有的 这两个中心段落的篇幅差距比较大，这个最好避免这个结尾段中规中矩， 大家可以模仿。
GRE考试：issue写作指导(提纲 模板)
GRE考试：issue作文重点题目和提纲gre issue 提纲“It is dangerous to trust only intelligence.”只相信智力是危险的。
【分析题目】拿到一个题目后，我们不要忙于去写，一定要先对题目进行详细的分析。
通过题目我们知道主要论证的是intelligence的作用，因此，智力是这个题目最关键的突破点。
【提纲1】A. 无可否认的，智力因素在各个领域都很重要，无论是自然科学还是社会科学。
(论据1)Undoubtedly, intelligence plays an important role in many realms, including the natural science and the social sciences.B.要想成功光靠智力是远远不够的，还有很多其他的因素如勤奋、勇敢等。
(论据2)Intelligence by itself is not enough for one to succeed; many other factors such as diligence and courage must be taken into consideration.C.应该在此二者之间寻求平衡，即将两者结合起来。
We should strive for a balance between intelligence and emotion, that is, combine them with each other.【提纲2】Position: Intelligence is sufficient in some cases but not in any case.1、In scientific studies regarding the physical world, we should depend only on intelligence for discovering and testing truths.2、However, in the realm of human affairs, we have to use both our intelligence and our hearts for solving problems.3、Sometimes our intuition can give us valuable assistance in making a judgment.GRE考试：issue字数gre issue 字数要求是怎样的?很多考生担心考试时issue 字数上不去。
GRE新老ISSUE对比
感兴趣的课程，而不是学习好找工作的课程。
（新题是旧题取反）interest them rather than seek programs that promise entry into the job market.。
缺乏实际经验的人对可能性有更自由的想象空间，所以能够不受固有的习惯和思维的限制来完成任务。
第1题一样，2/3题参考valuable asset than experience. People who lack experience are free to imagine what is possible and thus can approach a task without constraints of established habits and attitudes.其统治者、艺术家或者科学家的成就，而是全体人民的福利。
注意 第三个题稍有不同nation is not the achievements of its rulers, artists, or scientists, but the general welfare of all its people.to withhold information from the public.解过去并不能帮助今天的人knowing about the past cannot help people to make important decisions中都是没什么用处的，除非它是来自于该领域中的专家。
统一和分歧之专家all the time. Complete honesty isnot a useful virtue for a politician.It is often necessary, even。
gre作文issue教育提纲完整版
将244 道题分为11 类，分别是传媒，国际，教育，科技，历史，社会，文化，行为，学习，艺术和政治，每个类别的题目数如下：传媒：6--------1国际：5--------1教育：35科技：21-------30历史：8---------30社会：47-------1文化：11--------30行为：62------31学习：21-------30艺术：10-------2+ （交流，例子）政治：18--------30对于一些比较笼统的分类，我们会在讨论写作提纲和例子时，给出更具体的细分，如竞争和合作，过去和现在，个人和整体，权威，学科关系等。
接下来，我们会给出每题不少于5个的写作提纲以及背景知识、例子，希望大家多多参与和多提宝贵意见。
教育类1(5). "A nation should require all its students to study the same national curriculum until they enter college rather than allow schools in different parts of the nation to determine which academic courses to offer."一个国家应该要求所有的学生在进入大学之前都学习由国家统一制定的课程，而不是允许由国家不同地区的学校去决定课程的安排。
国家统一和地区单独安排课程Topic: except core course others be determined by different parts1)地方教育的好处：对地方政府，学校：更有动力；对学生，家长：选择面更广，培养个性对大学招生：喜欢多样性，不喜欢一个墨子，选专业不至于盲目+proverb P185/2)若没有地方教育，有不利方面：兴趣难以培养language survey,,贫富差异存在有代沟computer class3)过分强调地方也不好，国家的好处是：标准统一，容易确保质量，增加民族凝聚力4)则中方案时核心是国家，其余是地方，这样既保证了基本质量，又体现了多元------------------------------2(32). "A school or college should pay its teachers at the same rate in all disciplines, regardless of differences in salaries for related fields in the world outside of school. For example, entry-level teachers in mathematics and in the arts should receive the same pay, even if outside of school, math specialists earn a much higher salary on average than do specialists in the arts."不管在校园外不同领域之间薪水的差异有多大，学校对于所有学科老师的待遇应该是一视同仁的。
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If a goal is worthy, then any means taken to attain it are justifiable.
Write a response in which you discuss the extent to which you agree or disagree with the statement and explain your reasoning for the position you take. In developing and supporting your position, you should consider ways in which the statement might or might not hold true and explain how these considerations shape your position.
事实类
提纲：
1.先提正：
做任何事情都必须要有目标，有目标才能采取相应的具体措施。
2.后求反：
1. 能否从公认的原则或实施中推出相反的判断？
什么是“有价值”
法律就是为了防止和惩罚那些不正到的达到目标的方式出现。
反证：会导致不正当竞争，损害他人的利益。
2. 能否举出相反的事例？
小偷和强盗
1’. 能否从公认的原则或实施中推出相反的判断？
人们能很清楚的认识到自己的目标，但并不见得能够知道采取的措施会导致什么后果。
很有可能导致相反的后果。
2.’能否举出相反的事例？
发展经济。
3.因人因题合反散：
Goals are just like lighthouses which could tell you what measures should be taken in order to accomplish it. However, everyone should make all possible efforts but not take all measures in order to reach the worthy goals.
What is worthy goal? In my opinion, a worthy goal is if attaining it one or many people would benefit a lot and at the same time others' legitimate interests at least cannot be damnified. In this degree, whether the goal is worthy or not is determined by what measures one take.
To avoid starvation and poor is suppose to be a worthy goal. But when thieves and robbers steal or rob others to gain the goal, it becomes worthless. To win in competition intends to be a worthy goal. But when the competitor cheats or attacks his opponent maliciously, the winning becomes not so value. Improper measures may seriously eliminate the halo of worthy goals.
If whether the goal is beneficial and worthy is used to judge the means’validity, everybody could do whatever he wants under the banner of legitimate purpose. The significance of law’s existing is to prevent and punish the misdeed in the way to gain a goal.
Even though for those surely valuable goals, some measures which are seem to be helpful to attain the goal might lead to unexpected results. We can see many serious environmental problems now. Thick black smoke, acid rain, they have heavily harmed our
common life condition. But a fairly large part of them result from improving economy which is specious to ameliorate our life. Endless sea reclamation, mining of mineral and white pollution tells us even though improving economy is admittedly worthy, but the measure other than Green Economy is surely not justifiable.
In some degree, there is eyeless self-confidence but not sincere humility in human nature. It is this shortage makes “If a goal is worthy, then any means taken to attain it is justifiable”untenable. Humans don’t know whether they are doing now is the first step to devastation. When they persist to one destination, as large as a nation’s dominating of the world, as little as personal reputation and property, even fanatically, the so-called worthy goals might lead to everlasting perdition.373。