GRE三空题难题20
GRE考试《阅读理解》练习题及答案(20)

GRE考试《阅读理解》练习题及答案(20)GRE阅读题目解析:云对地球暖化效应的作用P40As of late 1980s, neither theorists nor large-scale computer climate models could accurately predict whether cloud systems would help or hurt a warming gl obe. Some studies suggested that a four percent increase in stratocumulus cloud s over the ocean could compensate for a doubling in atmospheric carbon dioxide, preventing a potentially disastrous planet-wide temperature increase. On the o ther hand, an increase in cirrus clouds could increase global warming.That clouds represented the weakest element in climate models was illustrat ed by a study of fourteen such models. Comparing climate forecasts for a world with double the current amount of carbon dioxide, researchers found that the mo dels agreed quite well if clouds were not included. But when clouds were incorp orated, a wide range of forecasts was produced. With such discrepancies plaguin g the models, scientists could not easily predict how quickly the world’s clim ate would change, nor could they tell which regions would face dustier droughts or deadlier monsoons.1. The author of the passage is primarily concerned withA. confirming a theoryB. supporting a statementC. presenting new informationD. predicting future discoveriesE. comparing points of view2. It can be inferred that one reason the fourteen models described in the passage failed to agree was thatA. they failed to incorporate the most up-to-date information about the eff ect of clouds on climateB. they were based on faulty information about factors other than clouds th at affect climateC. they were based on different assumptions about the overall effects of cl ouds on climateD. their originators disagreed about the kinds of forecasts the models shou ld provideE. their originators disagreed about the factors other than clouds that sho uld be included in the models3. The information in the passage suggests that scientists would have to an swer which of the following questions in order to predict the effect of clouds on the warming of the globe?A. What kinds of cloud systems will form over the Earth?B. How can cloud systems be encouraged to form over the ocean?C. What are the causes of the projected planetwide temperature increase?D. What proportion of cloud systems are currently composed of cirrus cloud s?E. What proportion of the clouds in the atmosphere form over land masses?P401As of late 1980s, neither theorists nor large-scale computer climate models could accurately predict whether cloud systems would help or hurt a warming gl obe.1980 年代末,无论气象理论学家还是大规模计算机气象模型都无法精确预测,云对地球暖化效应发挥积极或消极作用。
GRE填空三空题如何攻克

GRE填空三空题如何攻克GRE填空三空题如何攻克?快来一起学习吧,下面我就和大家共享,来观赏一下吧。
GRE填空三空题的详解To pay for the extra spending under this international poverty plan, each American would have to contribute less than the cost of buying a premium cup of coffee once a week. But financial aid is not(i)___, and even if the funding recommended here were to (ii)_____, the grandest objectives may well remain unfulfilled. Nonetheless, carefully targetedaid can reward responsible governments, (iii)_____individual initiative, and alleviate suffering. Many will think thats worth a cup of coffee.Blank(i) A.an impediment B.a panacea C.a maladyBlank(ii) D.be insufficient E.recede F.materializeBlank(iii) G. bviate H.temper I.encourage【韩冰老师的分析】第一空规律连接词为and,and表并列,并列的两个部分语义相同。
And后面是一个让步转折,让步转折的句子,意思的重点落在转折部分,即the grandest objectives may well remainunfulfilled. 这句话表达的是对这个扶贫方案的负态度,所以and前面也是体现负态度,又有个not, 所以选一个正评价的词,填B. panacea.再看第2空。
GRE 填空 三空题

OG 三空题目GRE Verbal Reasoning Practice QuestionsSET 3 Discrete Question: Medium4 Richard M. Russell said 52 percent of the nation’s growth since the Second World War had(i) invention. He said, (ii)research, the government’s greatest role in assuring continuing innovation is promoting a strong, modern patent office. “Unless we can(iii)original ideas, we will not have invention.” Mr. Russell said. Speculating on the state of innovation over the next century, several inventors agreed that the future lay in giving children the tools to think creatively and the motivation to invent.5 Statements presented as fact in a patent application are (i)unless a good reason for doubt is found. The invention has only to be deemed “more likely than not” to work in order to receive initial approval. And, although thousands of patents are challenged in court for other reasons, no incentive exists for anyone to expend effort (ii)the science of an erroneous patent. For this reason the endless stream of (iii)devices will continue to yield occasional patent.SET 5 Discrete Question: Hard4 No other contemporary poet’s work has such a well-earned reputation for (i), and there are few whose moral vision is so imperiously unsparing. Of late, however, the almost belligerent demands of his severe and densely forbidding poetry have taken an improbable turn. This new collection is the poet’s fourth book in six years—an ample output even for poets of sunny disposition, let alone for one of such (ii)over the previous 50 years. Yet for all his newfound (iii), his poetry is as thorny as ever.5 Managers who think that strong environmental performance will (i)their company’s financial performance often (ii)claims that systems designed to help them manage environmental concerns are valuable tools. By contrast, managers who perceive environmental performance to be (iii)to financial success may view an environmental management system as extraneous. In either situation, and whatever their perceptions, it is a manager’s commitment to achieving environmental improvement rather than the mere presence of a system that determines environmental performance.6 Philosophy, unlike most other subjects, dose not try to extend our knowledge by discovering new information about the world. Instead it tries to deepen our understanding through(i)what is already closest to us—the experiences, thoughts, concepts, and activities that make up our livesbut that ordinarily escape our notice precisely because they are so familiar. Philosophy begins by finding(ii)the things that are (iii).Practice TestSection 317The most striking thing about the politician is how often his politics have been (i) rather than ideological, as he adapts his political positions at any particular moment to the political realities that constrain him. He does not, however, piously (ii)political principles only to betray them in practice. Rather, he attempts in subtle ways to balance his political self-interest with a (iii), viewing himself as an instrument of some unchanging higher purpose.Section 411What readers most commonly remember about John Stuart Mill’s classic exploration of the liberty of thought and discussion concerns the danger of (i) : in the absence of challenge, one’s opinions, even when they are correct, grow weak and flabby. Yet Mill had another reason for encouraging the liberty of thought and discussion: the danger of partiality and incompleteness. Since one’sopinions, even under the best circumstances, tend to (ii), and because opinions opposed to one’s own rarely turn out to be com pletely (iii), it is crucial to supplement one’s opinions with alternative points of view.20Wills argues that certain malarial parasites are especially (i)because they have more recently entered humans than other species and therefore have had (ii)time to evolve toward (iii). Yet there is no reliable evidence that the most harmful Plasmodium species has been in humans for a shorter time than less harmful species.PREP 三空题目SECTION1-6 The question of (i)in photography has lately become nontrivial. Prices for vintage prints(those make by a photographer soon after he or she made the negative) so drastically (ii)in the 1990s that one of these photographs might fetch a hundred times as much as a nonvintage print of the same image. It was perhaps only a matter of time before someone took advantage ofthe(iii)to peddle newly created “vintage”prints for profit.SECTION34 I’ve long anticipated this retrospective of the artist’s work, hoping it would make(i)judgments about him possible, but greater familiarity with his paintings highlights their inherent (ii)and actually makes one’s assessment(iii).5 Higher energy prices would have many(i)effects on society as a whole. Besides encouraging consumers to be more(ii)in their use of gasoline, they would encourage the development of renewable alternative energy sources that are not(iii)at current prices.6 But they pay little attention to the opposite and more treacherous failing: false certainty, refusing to confess their mistakes and implicitly claiming(i),thereby embarrassing the nation and undermining the Constitution, which established various mechanisms of self-correction on the premise that even the wisest men are sometimes wrong and need, precisely when they find it most(ii), the benefit of(iii)process.原ETS 官网题目It is refreshing to read a book about our planet by an author who does not allow facts to be (i)by politics: well aware of the political disputes about the effects of human activities on climate andbiodiversity, this author does not permit them to(ii)his comprehensive description of what we know about our biosphere. He emphasizes the enormous gaps in our knowledge, the sparseness of our observations, and the(iii), calling attention to the many aspects of planetary evolution that must be better understood before we can accurately diagnose the condition of our planet.2006题目Murray, whose show of recent paintings and drawings is her best in many years, has been eminent hereabouts for a quarter century, although often regarded with (i)__________, but the most (ii)__________ of these paintings (iii)__________ all doubts.2007题目Having displayed his art collection in a vast modernist white space in (i)______ former warehouse, Mr. Saatchi has chosen for his new site its polar opposite, a riverside monument to civic pomposity that once housed the local government. There is nothing (ii)______ about the new location: the building’s design is bureaucratic baroque, (iii)______ style that is as declamatory as a task-force report and as self-regarding as a campaign speech.PRACTICE BOOK 题目That the President manages the economy is an assumption (i)_____ the prevailing wisdom that dominates electoral politics in the United States. As a result, presidential elections have become referenda on the business cycle, whose fortuitous turnings are (ii)_____ the President. Presidents are properly accountable for their executive and legislative performance, and certainly their actions may have profound effects on the economy. But these effects are (iii)_____. Unfortunately, modern political campaigns are fought on the untenable premise that Presidents can deliberately produce precise economic results.Room acoustics design criteria are determined according to the room’s intended use. Music, for example, is best (i)_____ in spaces that are reverberant, a condition that generally makes speech less (ii)_______. Acoustics suitable for both speech and music can sometimes be created in the same space, although the result is never perfect, each having to be (iii)______ to some extent.To the untutored eye the tightly forested Ardennes hills around Sedan look quite (i)______ , (ii)_______place through which to advance a modern army; even with today’s more numerous and better roads and bridges, the woods and the river Meuse form a significant (iii)______.参考答案:CEH AFH CDH BDIBEG CDH BDG BEHADG BEG CFI ADHAEI CEH CEH BEIBEG AEH。
GRE填空三空题练习,为您量身打造

新GRE考试相对于其前一代的旧GRE考生的体型变化成为考生的密切关注点。
从GRE 的Verbal Reasoning(语文部分)的角度来看,填空题型发生了较大的变化。
其中最为新奇的变化在于增加了以前从未出现过的三空题,下面的十道GRE填空三空题练习,为您量身打造。
1. In Democracies and its Critics, Robert Dahl defends both democratic value and pluralist democracies, or polyarchies. Dahl argues convincingly that the idea of democracy rests on political equality—the equality capacity of all citizens to determine or (i)___ collective decisions. Of course, as Dahl recognizes, if hierarchical ordering is (ii)___ in any structure of government, and if no society can guarantee perfect equality in the resources that may give rise to political influence, the democratic principle of political equality is (iii)___ of full realization. So actual systems can be deemed democratic only as approximations to the ideal.BLANK1 BLANK2 BLANK3A hamper D circumstantial G incapableB influence E inevitable H determinedC incorporate F neutral I possible2. Although the legal systems of England and the United States are superficially similar, they (i)___in their approaches to and uses of legal reasons: substantive reasons in the United States, whereas in England the (ii) ___ is true. This (iii)___ reflects a difference in the visions of law that prevail in the two counties. In England the law has traditionally been viewed as a system of rules; the United States favors a vision of law as an outward expression of the community’s sen se of right and justice.BLANK1 BLANK2 BLANK3A differ profoundly D reverse G distinctionB convergent E conventionality H equilibriumC slightly differentiate F similarity I dissemination3. Although some censure became (i)___ during the 1980s, Dahl himself seems to support some of such earlier criticism. Although he (ii)___ that some Westernintellectuals demand more democracy from polyarchies than is possible, he nevertheless ends his book by asking what changes in structures and consciousness might make political life more (iii)___ in present polyarchies.BLANK1 BLANK2 BLANK3A characterized D monocratic G revealsB subdued E gerontocracic H regretsC overruled F democratic I approves4. A major tenet of the neurosciences has been that all neurons (nerve cells) in the brains of vertebrate animals are formed early in development. An adult vertebrate, it was believed, must make do with (i)___ neurons: those lost through (ii)___ or injury are not replaced, and adult learning takes place not through generation of new cells but through (iii)___ among existing ones.BLANK1 BLANK2 BLANK3A a fixed number of D revolution H reproduction of older onesB abundant E disease G modification of connectionsC minimal F generation I deduction of similarities5. Evidence that the defendant in a criminal prosecution has a prior conviction may (i)___ jurors to presume the defendant’s guilt, because of their preconception that a person previously convicted of a crime must be inclined toward repeated criminal behavior. That commonly held belief is at least a (ii)___; not all former convicts engage in repeated criminal behavior. Also, jury may give more probative weight than objective analysis would allow to vivid photographic evidence depictin g a shooting victim’s wounds, or may (iii)___ the weight of defense testimony that is not delivered in a sufficiently forceful or persuasive manner.BLANK1 BLANK2 BLANK3A encourage D partial distortion of reality G underestimateB deter E vivid reflection of imagination H exaggerateC participate F precise calculation of certainty I reflect6. The usage suggests that the creation and critical interpretation of literature are not (i)___ but mechanical processes; that the author of any piece of writing is not (ii)___ artist, but merely a laborer who cobbles existing materials (words) into more or less conventional structures. The term deconstruction implies that the text has been put together like a building or a piece of machinery, and that it is in need of being taken apart, not so much in order to (iii)___ it as to demonstrate underlying inadequacies, false assumptions, and inherent contradictions.BLANK1 BLANK2 BLANK3A instructive D a derivative G repairB literal E an insipid H qualifyC organic F an inspired I construct7. Most psychologists, perplexed by the feelings they acknowledge are aroused by aesthetic experience, have claimed that these emotions are genuine, but different in kind from nonaesthetic emotions. This, however, is (i)___ rather than an empirical observation and consequently lacks explanatory value. On the other hand, Gombrich argues that emotional responses to art are (ii)___; art triggers remembrances of previously experienced emotions. These debates have prompted the psychologist Radford to argue that people do experience real melancholy or joy in responding to art, but that these are (iii)___ responses precisely because people know they are reacting to illusory stimuli.BLANK1 BLANK2 BLANK3A a descriptive distinction D vivacious G zealousB a body of profound knowledge E synonymous H lugubriousC a valid evidence F ersatz I irrational8. Until recently many astronomers believed that asteroids travel about the solar system (i)___ satellites. These astronomers assumed this because they considered asteroid-satellite systems inherently (ii)___. Theoreticians could have told them otherwise: even minuscule bodies in the solar system can theoretically have satellites, as long as everything is in proper scale. If a bowling ball were orbiting about the Sun in the asteroid belt, it could have a pebble orbiting it as far away as a few hundred radii (or about 50 meters) (iii)___ the pebble to the Sun’s gravitational pull.BLANK1 BLANK2 BLANK3A unaccompanied by D scathing G without losingB unprecedented by E unstable H before reapingC unparalleled by F soporific I as well as easing9. For analytical purposes (i)___ political conduct has traditionally been divided into two categories. However, there are some common crimes that are so (ii)___ from a political act that the entire offense is regarded as political. These crimes, which are called "(iii)___" political offenses, are generally nonextraditable.BLANK1 BLANK2 BLANK3A illegal D inseparable G ambiguousB political E distinct H vagueC licit F capricous I relative10. Social democracy is a general ethical ideal, looking to human (i)___ and brotherhood, and inconsistent, in its radical form, with such institutions as the family and (ii)___ property. Democratic government, on the contrary, is merely a means to an end, an (iii)___ for the better and smoother government of certain states at certain junctures. It involves no special ideals of life; it is a question of policy, namely, whether the general interest will be better served by granting all people an equal voice in elections.BLANK1 BLANK2 BLANK3A salutary D unpredictable G aristocracyB equality E general H promotionC complicated F efficacious I grandiloquence答案:BDG AEG BHF AEG ADG CFG AEG AEG ADI BEG以上就是十道GRE填空三空题练习,希望大家能够认真对待,做好总结。
GRE填空等价各类题型解题技巧难题指点

GRE填空等价各类题型解题技巧难题指点GRE填空等价各类题型有用解题技巧难题教导,一起来学习一下吧,下面我就和大家共享,来观赏一下吧。
GRE填空等价各类题型有用解题技巧难题教导GRE填空部分一共可以分为4种题型,分别是单空题、双空题、三空题和等价题。
这些题目的考点本质上虽然还是词汇,但在解题过程中考生也需要适当把握不同的解题思路运用解题技巧。
新GRE填空题有哪些题型?新GRE填空题型主要有三种题型,分别是单空单选、单空双选和多空多选,三类题型均会在考试中随机消失,难度上单空单选一般比较简洁,而另外两种题型则更难一些。
单空单选解题思路实例讲解这种题目就是各类英文考试中常见的句子填空题,且限定题干只有一个空格,答案为五个选项中选择一个符合空格的正确选项。
例1:Far from viewing Jefferson as a skeptical but enlightened intellectual, historians of the 1960’s portrayed him as ______ thinker, eager to fill the young with his political orthodoxy while censoring ideas he did not like.an adventurousa doctrinairean eclectica judiciousa cynical此题解答有两种途径,一是从Far from体现的转折关系入手,空格应当体现和skeptical but enlightened的含义相反的意思,故a doctrinaire符合要求;一是从eager to…入手,空格应当体现“渴望给年轻人灌输政治正统思想”的意思,答案仍旧是“教条主义者”。
明显,单空单选题的解方法是我们所熟识和了解的,即从阅读和规律分析的角度入手,分析与空格相关的内容或者规律关系,从而推断空格所填词汇的含义或者感情颜色等。
GRE(QUANTITATIVE)综合模拟试卷20(题后含答案及解析)

GRE(QUANTITATIVE)综合模拟试卷20(题后含答案及解析) 题型有:1. 计算题1.When the positive integer n is divided by 3, the remainder is 2 and when n is divided by 5, the remainder is 1. What is the least possible value of n?正确答案:112.Ellen has received the following scores on 3 exams: 82, 74, and 90. What score will Ellen need to receive on the next exam so that the average(arithmetic mean)score for the 4 exams will be 85?正确答案:94解析:Let x represent the score on Ellens next exam. This initial step of assigning a variable to the quantity that is sought is an important beginning to solving the problem. Then in terms of x, the average of the 4 exams iswhich is supposed to equal 85. Now simplify the expression and set it equal to 85:Solving the resulting linear equation for x, you get246 + x = 340 x = 94Therefore, Ellen will need to attain a score of 94 on the next exam.3.A mixture of 12 ounces of vinegar and oil is 40 percent vinegar, where all of the measurements are by weight. How many ounces of oil must be added to the mixture to produce a new mixture that is only 25 percent vinegar?正确答案:7.2解析:Let x represent the number of ounces of oil to be added. Then the total number of ounces of the new mixture will be 12 + x, and the total number of ounces of vinegar in the new mixture will be(0.40)(12). Since the new mixture must be 25 percent vinegar,Therefore,(0.40)(12)=(12+ x)(0.25)4.8 = 3 + 0.25x 1.8 = 0.25x7.2 = xThus, 7.2 ounces of oil must be added to produce a new mixture that is 25 percent vinegar.4.In a driving competition, Jeff and Dennis drove the same course at average speeds of 51 miles per hour and 54 miles per hour, respectively. If it took Jeff 40 minutes to drive the course, how long did it take Dennis?正确答案:37.8 minutes解析:Let x be the time, in minutes, that it took Dennis to drive the course. The distance d, in miles, is equal to the product of the rate r, in miles per hour, and the time t, in hours; that is,d=rtNote that since the rates are given in miles per hour, it is necessary to express the times in hours; for example, 40 minutes equalsof an hour.Thus, the distance traveled by Jeff is the product of his speed and his time,(51)()miles, and the distance traveled by Dennis is similarly represented by(54)()miles. Since the distances are equal, Thus, it took Dennis approximately 37.8 minutes to drive the course.5.Working alone at its constant rate, machine A takes 3 hours to produce a batch of identical computer parts. Working alone at its constant rate, machine B takes 2 hours to produce an identical batch of parts. How long will it take the two machines, working simultaneously at their respective constant rates, to produce an identical batch of parts?正确答案:6/5 hours, or 1 hour 12 minutes解析:Since machine A takes 3 hours to produce a batch, machine A can produce 1/3 of the batch in 1 hour. Similarly, machine B can produce - of the batch in 1 hour. If we let x represent the number of hours it takes both machines, working simultaneously, to produce the batch, then the two machines will produce - of the job in 1 hour. When the two machines work together, adding their individual production rates, 1/3 and 1/2, gives their combined production rate 1/x. Therefore,Thus, working together, the machines will take 6/5 hours, or 1 hour 12 minutes, to produce a batch of parts.6.At a fruit stand, apples can be purchased for $0.15 each and pears for $0.20 each. At these rates, a bag of apples and pears was purchased for $3.80. If the bag contained 21 pieces of fruit, how many of the pieces were pears?正确答案:13解析:If a represents the number of apples purchased and p represents the number of pears purchased, the information can be translated into the following system of equations.0.15a+ 0.20p = 3.80(total cost)a+p = 21(total number of fruit)From the second equation, a = 21-p. Substituting 21-p into the first equation fora gives0.15(21-p)+ 0.20p = 3.80(0.15)(21)- 0.15p + 0.20p = 3.803.15-0.15p + 0.20p =3.800.05p = 0.65p=13Thus, of the 21 pieces of fruit, 13 were pears.7.To produce a particular radio model, it costs a manufacturer $30 per radio, and it is assumed that if 500 radios are produced, all of them will be sold. What must be the selling price per radio to ensure that the profit(revenue from the sales minus the total production cost)on the 500 radios is greater than $8,200?正确答案:$46.40解析:If y represents the selling price per radio, then the profit is 500(y - 30). Therefore, we set500(y-30)> 8,200Solving the inequality, we get500y- 15,000 > 8,200 500y> 23,200y > 46.4Thus, the selling price must be greater than $46.40 to ensure that the profit is greater than $8,200.Some applications involve computing interest earned on an investment during a specified time period. The interest can be computedas simple interest or compound interest.Simple interest is based only on the initial deposit, which serves as the amount on which interest is computed, called the principal, for the entire time period. If the amount P is invested at a simple annual interest rate of r percent, then the value V of the investment at the end of t years is given by the formulaV = P(1+)where P and V are in dollars.In the case of compound interest, interest is added to the principal at regular time intervals, such as annually, quarterly, and monthly. Each time interest is added to the principal, the interest is said to be compounded. After each compounding, interest is earned on the new principal, which is the sum of the preceding principal and the interest just added. If the amount P is invested at an annual interest rate of r percent, compounded annually, then the value V of the investment at the end of t years is given by the formulaV =If the amount P is invested at an annual interest rate of r percent, compounded n times per year, then the value V of the investment at the end of t years is given by the formulaV =8.If $10,000 is invested at a simple annual interest rate of 6 percent, what is the value of the investment after half a year?正确答案:$10,300解析:According to the formula for simple interest, the value of the investment after 1/2 year is=$10,000(1.03)= $10,3009.If an amount P is to be invested at an annual interest rate of 3.5 percent, compounded annually, what should be the value of P so that the value of the investment is $1,000 at the end of 3 years?正确答案:$901.94解析:According to the formula for 3.5 percent annual interest, compounded annually, the value of the investment after 3 years isP(1 + 0.035)3and we set it to be equal to $1,000P(l + 0.035)3 = $1,000To find the value of P, we divide both sides of the equation by(1 + 0.035)3.P =≈$901.94 Thus, an amount of approximately $901.94 should be invested.10.A college student expects to earn at least $1,000 in interest on an initial investment of $20,000. If the money is invested for one year at interest compounded quarterly, what is the least annual interest rate that would achieve the goal?正确答案:4.91 percent解析:According to the formula for r percent annual interest, compounded quarterly, the value of the investment after 1 year isBy setting this value greater than or equal to $21,000 and solving for r, we getWe can use the fact that taking the positive fourth root of each side of an inequality preserves the direction of the inequality. This is also true for the positive square root or any other positive root.To compute the fourth root, we can use the fact thatfor x ≥0; that is, we can compute afourth root by taking a square root twice:So the least annual interest rate is approximately 4.91 percent.11.Find an algebraic expression to represent each of the following.(a)The square of y is subtracted from 5, and the result is multiplied by 37.(b)Three times x is squared, and the result is divided by 7.(c)The product of(x + 4)and y is added to 18.正确答案:(a)37(5-y2), or 185-37y2(b)(c)18 +(x + 4)(y), or 18 + xy + 4y12.Simplify each of the following algebraic expressions.(a)3x2-6 + x + 11-x2 +5x(b)3(5x-1)-x + 4(c), where x≠4(d)(2x + 5)(3x-l)正确答案:(a)2x2 + 6x + 5(b)14x+l(c)x + 4(d)6x2+13x-513.(a)What is the value of f(x)= 3x2 -7x + 23 when x = - 2 ?(b)What is the value of h(x)= x3-2x2 + x-2 when x = 2?(c)What is the value of k(x)=x-7 when x = 0?正确答案:(a)49(b)0(c)-714.If the function g is defined for all nonzero numbers y by g(y)=, find the value of each of the following. (a)g(2)(b)g(-2)(c)g(2)- g(-2)正确答案:(a)1(b)-1(c)215.Use the rules of exponents to simplify the following.(a)(n5)(n-3)(b)(s7)(t7)(e)(w5)-3(f)(50)(d3)正确答案:(a)n2(b)(sf)7(c)r8(d)(e)(f)d3(g)(h)9x2y316.Solve each of the following equations for x.(a)5x-7 = 28(b)12-5x = x + 30(c)5(x + 2)= l-3x(d)(x + 6)(2x-l)= 0(e)x2+5x-14 = 0(f)x2-x-l = 0正确答案:(a)7(b)-3(c)(d)-6, 1/2(e)-7, 2(f)17.Solve each of the following systems of equations for x and y.(a)x + y = 24x-y = 18(b)3x-y = -5 x + 2y = 3(c)15x-18-2y = -3x + 7 10x + 7y + 20 = 4x + 2 正确答案:(a)x=21y=3(b)x=-1 y=2(c)x=1/2 y=-318.Solve each of the following inequalities for x.(a)-3x>7 + x(b)25x + 16≥10-x(c)16 + x>8x-12正确答案:(c)x<419.For a given two-digit positive integer, the tens digit is 5 more than the units digit. The sum of the digits is 11. Find the integer.正确答案:8320.If the ratio of 2x to 5y is 3 to 4, what is the ratio of x to y?正确答案:15 to 821.Kathleens weekly salary was increased by 8 percent to $237.60. What was her weekly salary before the increase?正确答案:22022.A theater sells children’s tickets for half the adult ticket price. If 5 adult tickets and 8 children’s tickets cost a total of $27, what is the cost of an adult ticket?正确答案:323.Pat invested a total of $3,000. Part of the money was invested in a money market account that paid 10 percent simple annual interest, and the remainder of the money was invested in a fund that paid 8 percent simple annual interest. If the interest earned at the end of the first year from these investments was $256, how much did Pat invest at 10 percent and how much at 8 percent?正确答案:$800 at 10% and $2,200 at 8%24.Two cars started from the same point and traveled on a straight course in opposite directions for exactly 2 hours, at which time they were 208 miles apart. If one car traveled, on average, 8 miles per hour faster than the other car, what was the average speed of each car for the 2-hour trip?正确答案:48 mph and 56 mph25.A group can charter a particular aircraft at a fixed total cost. If 36 people charter the aircraft rather than 40 people, then the cost per person is greater by $12.(a)What is the fixed total cost to charter the aircraft?(b)What is the cost per person if 40 people charter the aircraft?正确答案:(a)$4,320(b)$108。
GRE阅读真题之OGPassage20-22答案参考
GRE阅读真题之OGPassage20-22答案参考OG是官方指南,相信大家都在找GRE阅读真题之OG吧,为了帮助大家备考,下面小编给大家带来GRE阅读真题之OG Passage 20-22答案参考。
GRE阅读真题之OG Passage 20OG-1Passage 20Sparva, unlike Treland’s other provinces, requires automobile insurers to pay for any medical treatment sought by someone who has been involved in an accident; in the other provinces, insurers pay for nonemergency treatment only if they preapprove the treatment. Clearly, Sparva’s less restrictive policy must be the explanation for the fact that altogether insurers there pay for far more treatments after accidents than insurers in other provinces, even though Sparva does not have the largest population.1. Which of the following, if true, most strengthens the argument?A. Car insurance costs more in Sparva than in any other province.B. The cost of medical care in Sparva is higher than the national average.C. Different insurance companies have different standards for determining what constitutes emergency treatment.D. Fewer insurance companies operate in Sparva than in any other province.E. There are fewer traffic accidents annually in Sparva than in any of the provinces of comparable or greater population.GRE阅读真题之OG Passage 21OG-1Passage 21Elements of the Philosophy of Newton, published by Voltaire in 1738, was an early attempt to popularize the scientific ideas of Isaac Newton. In the book’s frontispiece, Voltaire is seen writing at his desk, and over him a shaft of light from heaven, the light of truth, passes through Newton to Voltaire’s collaborator Madame du Ch?telet; she reflects that light onto the inspired Voltaire. Voltaire’s book commanded a wide audience, according to Feingold, because “he was neither a mathematician nor a physicist, but a literary giant aloof from the academic disputes over Newtonian ideas.” In other words, Voltaire’s amateurism in science “was a source of his contemporary appeal, demonstrating for the first time the accessibility of Newton’s ideas to nonspecialists.”For the following question, consider each of the choices separately and select all that apply.1. Which of the following statements about Voltaire’s Elements of the Philosophy of Newton can be inferred from the passage?A. Voltaire’s literary stature helped secure a large audience for this attempt to popularize Newton’s ideas.B. Voltaire’s status as a nonscientist was an advantage in this effort to bring Newtonian science to the attention of the general public.C. The frontispiece of the book implies that Voltaire’s understanding of Newton’s ideas was not achieved without assistance.2. Select the sentence that describes an allegory for Voltaire’s acquisition of knowledge concerning Newton’sideas.GRE阅读真题之OG Passage 22OG-1Passage 22It would be expected that a novel by a figure as prominent as W. E. B. DuBois would attract the attention of literary critics. Additionally, when the novel subtly engages the issue of race, as DuBois’ The Quest of the Silver Fleece (1911) does, it would be a surprise not to encounter an abundance of scholarly work about that text. But though valuable scholarship has examined DuBois’ political and historical thought, his novels have received scant attention. Perhaps DuBois the novelist must wait his turn behind DuBois the philosopher, historian, and editor. But what if the truth lies elsewhere: what if his novels do not speak to current concerns?1. Which of the following can be inferred from the passage regarding DuBois’ The Quest of the Silver Fleece?A. The lack of attention devoted to The Quest of the Silver Fleece can be attributed to the fact that it was DuBois’ first novel.B. Among DuBois’ novels, The Quest of the Silver Fleece is unusual in that it has received scant attention from scholars.C. The Quest of the Silver Fleece has at least one feature that typically would attract the attention of literary scholars.D. The Quest of the Silver Fleece, given its subtle exploration of race, is probably the best novel written by DuBois.E. Much of the scholarly work that has focused on The Quest of the Silver Fleece has been surprisingly critical of it.2. In the fourth sentence (“Perhaps DuBois . . . editor.”), the author of the passage is most likely suggesting thatA. scholars will find that DuBois’ novels are more relevan t to current concerns than is his work as philosopher, historian, and editorB. more scholarly attention will be paid to The Quest of the Silver Fleece than to DuBois’ other novelsC. DuBois’ novels will come to overshadow his work as philosopher, historian, and editorD. DuBois’ novels may eventually attract greater scholarly interest than they have to dateE. it will be shown that DuBois’ work as philosopher, historian, and editor had an important influence on his work as novelist3. Which of the following best describes the central issue with which the passage is concerned?A. The perfunctoriness of much of the critical work devoted to DuBois’ novelsB. The nature of DuBois’ engagement with the issue of race in The Quest of the Silver FleeceC. Whether Du Bois’ novels are of high quality and relevant to current concernsD. The relationship between DuBois the novelist and DuBois the philosopher, historian, and editorE. The degree of consideration that has been given to DuBois’ novels, including The Quest of the Silver FleeceGRE官方指南(OG)中的阅读真题答案Passage 第一题第二题第三题第四题20 E21 ABC “In … Voltaire.”22 C D EGRE阅读真题之OG Passage 20-22答案参考。
GRE三空题真题汇总
1. Richard M. Russell said 52 percent of thenation’s growth since the Second World War had(i) ______ invention. He said,(ii)______ research, the government’s greatest role in assuring continuing innovationis promoting a strong, modern patent office. “Unless we can (iii) ______ original ideas,we will not have invention.” Mr. Russell said. Speculating on the state of innovationover the next century, several inventors agreed that the future lay in giving children the tools to think creatively and the motivation to invent. BLANK (i) BLANK (ii) BLANK (iii) (A) been at the expense of (D) in addition to restricting (G) evaluate (B) no bearing on (E) aside from supporting (H) protect (C) come through (F) far from exaggerating (I) disseminate2. Statements presented as fact in a patent application are (i) ______ unless a good reason for doubt is found. The invention has only to be deemed “more likely than not” to work in order to receive initial approval.And, although thousands of patents are challenged in court for other reasons, no incentive exists for anyone to expend effort (ii) ______ the science of an erroneous patent. For this reason the endless stream of (iii) ______ devices will continue to yield occasional patent. BLANK (i) BLANK (ii) BLANK (iii) (A) presumed verifiable (D) corroborating (G) novel (B) carefully scrutinized (E) advancing (H) bogus (C) considered capricious (F) debunking (I) obsolete3. The question of (i) ______ in photography has lately become nontrivial. Prices for vintage prints (those make by a photographer soon after he or she made the negative) so drastically (ii) ______ in the 1990s that one of these photographs might fetch a hundred times as much as a nonvintage print of the same image. It was perhaps only a matter of time before someone took advantage of the (iii) ______ to peddle newly created “vintage” prints for profit. BLANK (i) BLANK (ii) BLANK (iii) (A) forgery (D) ballooned (G) discrepancy (B) influence (E) weakened (H) ambiguity (C) style (F) varied (I) duplicity4. The most striking thing about the politician is how often his politics have been (i)______ rather than ideological, as he adapts his political positions at any particular moment to the political realities that constrain him. He does not, however, piously (ii)______ political principles only to betray them in practice. Rather, he attempts in subtle ways to balance his political self-interest with a (iii) ______, viewing himself as an instrument of some unchanging higher purpose. BLANK (i) BLANK (ii) BLANK (iii) (A) quixotic (D) brandish (G) profound cynicism (B) self – righteous (E) flout (H) deeply felt moral code (C) strategic (F) follow (I) thoroughgoing pr agmatism5. That the President manages the economy is an assumption (i) ______ the prevailing wisdom that dominates electoral politics in the United States. As a result, presidential elections have become referenda on the business cycle, whose fortuitous turnings are(ii) ______ the President. Presidents are properly accountable for their executive and legislative performance, and certainly their actions may have profound effects on the economy. But these effects are (iii) ______. Unfortunately, modern political campaigns are fought on the untenable premise that Presidents can deliberately produce precise economic results. BLANK (i) BLANK (ii) BLANK (iii) (A) peripheral to (D) justifiably personified in (G) usually long – lasting(B) central to (E) erroneously attributed to (H) regrettably unnoticeable(C) at odds with (F) occasionally associated with (I) largely unpredictable6. What readers most commonly remember about John Stuart Mill’s classic exploration of the liberty of thought and discussion concerns the danger of (i) ______: in the absence of challenge, one’s opinions, even when they are correct, grow weak and flabby. Yet Mill had another reason for encouraging the liberty of thought and discussion: the danger of partiality and incompleteness. Since one’s opinions, even under the best circumstances, tend to (ii)______, and because opinions opposed to one’s own rarely turn out to be completely (iii)______, it is crucial to supplement one’s opinions with alternative points of view. BLANK (i) BLANK (ii) BLANK (iii) (A) tendentiousness (D) embrace only a portion of the truth (G) erroneous (B) complacency (E) change over time (H)antithetical (C) fractiousness (F) focus on matters close at hand (I) immutable7. To the untutored eye the tightly forested Ardennes hills around Sedan look quite (i)______, (ii) ______ place through which to advance a modern army; even with today’s more numerous and better roads and bridges, the woods and the river Meuse form a significant (iii) ______. BLANK (i) BLANK (ii) BLANK (iii) (A) impenetrable (D) a makeshift (G) resource (B) inconsiderable (E) an unpropitious (H) impediment (C) uncultivated (F) an unremarkable (I) passage8. Managers who think that strong environmental performance will (i) ______ their company’s financial performance often (ii) ______ claims that systems designed to help them manage environmental concerns are valuable tools. By contrast, managers who perceive environmental performance to be (iii) ______ to financial success may view an environmental management system as extraneous. In either situation, and whatever their perceptions, it is a manager’s commitment to achieving environmental improvement rather than the mere presence of a system that determines environmental performance.BLANK (i) BLANK (ii) BLANK (iii)(A) eclipse (D) uncritically accept (G) complementary(B) bolster (E) appropriately acknowledge (H) intrinsic(C) degrade (F) hotly dispute (I) peripheral。
(完整版)2019年GRE考试填空练习试题及答案解析20
2019年GRE考试填空练习试题及答案解析2058、 Once a duckling has identified a parent, the instinctive bond becomes a powerful _________ for additional learning since, by _________ the parent, the duckling can acquire further information that is not genetically transmitted.(A) impulse...surpassing(B) referent...recognizing(C) force...acknowledging(D) inspiration...emulating(E) channel...mimicking分析:空格 1 填入一个名词,表示"本能的纽带(instinctive bound)"和"进一步学习(additional learning)"之间的关系;空格 2 填入一个现在分词,表示小鸭子对它们的"父母(parent)"做的动作,by 表示手段,所以空格 2 应该和目的以及结果一致,所以空格 2 要表现"能够获得更多不是靠遗传获得的信息(can acquirefurther information that is not genetically transmitted)"。
A 推动""超越;B 所指事物""认出,辨认;C 力量""承认;D 启发,灵感""通过模仿竞争;E 渠道""模仿。
E 选项为准确答案。
翻译:一旦小鸭子确认了其父母,本能的纽带就成为进一步学习的强有力的渠道,因为通过模仿父母,小鸭子能获得更多的不是由遗传得到的信息。
GRE填空500题难点题型实例解析 反对委员会的结论
GRE填空500题精选难点题型实例解析反对委员会的结论今天给大家带来了GRE填空500题精选难点题型实例解析之反对委员会的结论,希望能够帮助到大家,下面就和大家提供,来欣赏一下吧。
题目Given the (i) mittees and the (ii) nature of its investigation , it would be unreasonable to gainsay the mittee's conclusions at first glance.Blank (i) Blank (ii)A. sterling reputation of D. superficialB. lack of funding for E. spontaneousC. ad hoc existence of F. exhaustive正确答案AF题目解析原句翻译:鉴于委员会的卓越声望,加之该调查面面俱到,乍看之下让人很难反对其结论。
词汇含义如果反对委员会结论是“ unreasonable ” 不理智的,不合理的,荒唐的,那么委员会的属性就很好猜了。
given 做介词时,相当于 considering,鉴于…,考虑到…,因果关系指示词。
sterling 高质量的,银质的,(硬币或贵金属)标准纯度的、真的,令人钦佩的,优秀的ad hoc (拉丁语)专为某一目的的,特别的,非事先方案的,非正式的spontaneous 自发的,主动的,非勉强的exhaustive 详尽彻底的,全面的GRE填空分为单空题,双空题,三空题,六选二。
GRE填空题型中的六选二投机取巧省时间的做法就是上来不看题,直接扫选项找同义词组。
所以首先背单词要注意同义词的积累,这里的同义词是在特定语境下的同义词。
填空局部其实考察的通常是形容性质的词汇,例如encyclopedic(百科全书式的),idiosyncratic(有独特气质的),很少考察像幽闭恐惧症这种仅仅描述物体的单词,也根本不会考那些malinger(装病以逃避工作)。
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1. Countless generations have been divided on Mendelssohn’s ____________—should he inhabit the same pantheon as Bach and Haydn, or be ____________ to the ranks of could-have-beens? After all, it can be argued that his ____________ came at the age of 14 with his Octet in E-flat, a work, many believe, the composer never eclipsed in his remaining twenty-six years.2. Some note that the increase in the Native American powwow--an intertribal affair of song, dance, and storytelling, all intrinsic aspects of Native American culture--serves to (i) ______________ the very culture it presumably aims to (ii) ______________. They argue an overarching cultural narrative emerges, one that (iii)______________ the narrative of any one tribe.3. To the senior manager, unsolicited opinions, even if the views expressed did not necessarily (i) ______________ his own views, were (ii)______________ ; thus, employees had learned to be (iii)______________ lest they no longer found themselves in his good graces.4. That the comedian was so ____________ as to be unable to ____________ the effect she had on others was not lost on her audience, who quickly stood up to leave, hoping their action would at last ____________.5. That we can, from a piece of art, (i)_____ the unconscious urges of the artist—urges that remain hidden even from the artist himself—will remain a(n) (ii)_____ issue, as it is one (iii)_____ empirical analysis: we can never definitively know what is submerged deep inside the artist’s psyche, let alone reconcile any such revelations with the artist’s work.6. Special effects in movies are (i)_____, in that unlike the story, whose permutations seem to have long ago been (ii)_____, they continue to evolve: if we were magically beamed years into the future (of course that story has been told numerous times before), the special effects would (iii)_____; the story would be awfully familiar.7. Whether repression has come from the church or from a totalitarian state, science has always been an imperiled endeavor, but to claim that it will only flourish in times of libertarian rule is not a(n) ____________ conclusion. A(n) ____________ government is not the same as one that actively takes an interest in funding science – and the latter may well be, in some respects, ____________.8. For charities operating in the developing world, when noble impulses(i) ______________ into mere (ii) ______________, vapid slogans rear their heads and we witness a further deterioration in the very situation such high-mindedness had initially sought to (iii) ______________.9. The question as to what constitutes art is hardly a ____________ one. Today, artists exist whose main goal seems only to subvert work that no longer warrants the trite tag ―cutting-edge.‖ Once the pr overbial envelope is pushed even further, the public inevitably scratches its collective head – or furrows the collective brow – thinking that this time the ―artists‖ have ____________. That very same admixture of contempt and confusion, however, was not u nknown in Michelangelo’s day; only what was considered blasphemous, art-wise, in the 16th Century, would today be considered ____________.10. Perkin’s wit, surprisingly ____________ by the prudishness of his time, may not have been nearly as ____________ had he lived in an era not so prone to ____________.11. It is telling that a politician long adept at inhabiting any role that will serve his immediate purpose has been able to (i) ______________ a disgruntled electorate, an outcome that perhaps speaks more to the electorate’s (ii) ______________ nature than it does to his ability to be (iii) ______________.12. She gave him a(n) (i)_____ look that was not so much (ii)_____ as it was (iii)_____.13. For an artist of such circumscribed talent, Mario was given (i)_____ attention, many connoisseurs (ii)_____ over works that warranted nothing more than a(n) (iii)_____ glance.14. The number of speeding tickets one receives is by no means a reliable measure of (i)_____. Some (ii)_____ drivers, in fact, prove that in certain cases the inverse is true. That is those savvy enough to have availed themselves of the latest cellular phone applications receive up-to-the-minute information on the presence of highway patrolmen—greater excess speed, in these instances, simply implies a greater (iii)_____.15. Heinrich Feyermahn, in insisting that Galileo did not fully uphold the tenets of scientific rationalism, does not (i)_____ the Italian astronomer, but rather the very edifice of Western thought. For if Galileo is the purported exemplar of rational thinking, and yet is (ii)_____, then the history of science cannot be understood as an endless succession of scientists carrying out their work free of all-too-human biases. Thus, Feyermahn admonishes, in faithfully chronicling the sweep of science in the last 300 years, historiographers would be (iii)_____ to not include the human foibles that were part of even the most ostensibly Apollonian endeavors. ?16. James Clerk Maxwell once remarked that the best scientists are, in a sense, the (i)_____ ones not hemmed in by the (ii)_____ of their respective fields, they are able to approach problems with a(n) (iii)_____ mind, so to speak.17. According to Lackmuller’s latest screed, published under the title,?Why We Can’t Win at Their Game, special interest groups not nominally tied to ecological concerns have become so (i) _____ theprocess of environmental policymaking that those groups who actually aim to ensure that corporate profit does not trump environmental health have been effectively (ii) _____. Lackmuller’s contention, however, is (iii)_____ in that it fails to account for the signal achievements environmental groups have effected over the last 20 years—often to the chagrin of big business.18. For charities operating in the developing world, when noble impulses (i)_____ into mere (ii)_____, vapid slogans rear their heads and we witness a further deterioration in the very situation such high-mindedness had initially sought to (iii) _____.19. Lam bert, in his latest thesis, is guilty of (i) _____ Nietzsche’s conception of eternal recurrence, a scholarly transgression that results mainly from his propensity to (ii) _____ multiple sources. That his interpretation seems (iii) _____ may indeed obscure the fact that he liberally combined ideas drawn from numerous works, many of them contemporary, a fact that, in part, accounts for the dubious validity of his overall project.20. To view a film by Torneau is to enter the auteur’s mind. That his reality fails to correspond in salient ways to that of a ‖normal‖ person does not (i)_____ —even if Torneau is incapable of escaping his own head. To appreciate his work, the audience simply has to indulge the director his (ii)_____and leave at the theater door its own (iii)_____.。