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05-11
下面是留学群小编为大家整理的2017年5月GRE考试预测试题及答案，欢迎大家阅读。
1. Blake’s reputation for weakness is _____: almost all who have worked with him say he is a disciplined, intellectually formidable, and very tough politician.
A. specious
B. pervasive
C. irreversible
D. trivial
E. ambivalent
参考答案：A
题目解析：A:B前后构成同义解释关系，后面说Blake讲原则，令人敬畏，所以前面部分填入表示weakness是“不存在”类别词汇。
2. Retrofitted with stabilizing devices, some of which _____ its aesthetics, the bridge has been reopened, no longer prone to excessive swaying but not quite the breathtaking structure it originally was.
A. impair
B. resist
C. improve
D. enhance
E. restore
F. compromise
参考答案：A F
题目解析：这座桥用了一些稳固装置进行翻新以后，其中一些(some of which)【破坏】了它的美观，这个桥重新开放以后，不再会倾向于(prone to)像以前那样过分的摇晃了，但是也没了原本会令人惊讶叹服的外观结构。所以根据最后no longer... but not 判断桥更稳固但是牺牲了美观，因此前面应该是负评价，答案为AF损坏。resist 对抗，抵制;improve 提高，改进; enhance 提高，增加; restore 修复。
3. Mr. Hirsch says he will aim to preserve the foundation’s support of _____ thinkers, individuals who are going against the trends in a field or an acknowledged set of opinions.
A. iconoclastic
B. integrative
C. doctrinaire
D. heterodox
E. dogmatic
F. synthesizing
参考答案：A D
题目解析：应当选择的词汇是表达反对意见,跟后面的against相呼应的词汇。首先这个句子个结构简单，所以要找到里面的对等部分，要么是同义要么是反义，这句里没有强烈反义词汇，所以基本直接断定同义。再看句...
07-07
新gre考试阅读机经：长江水稻
背景介绍： 在南亚发现了domesticated Rice,然后推测南亚是Rice的发源地，然后1985年在中国的长江流域发现了很多 wilder rice的遗址，推测生活在中国的先民有可能更早的驯化了rice。
提出旧理论： rice-farming最早在长江以南出现中 华 考 试 网
提出新理论： 认为长江流域的rice-farming可以往前推几百年。最后一段讲，1940年(?)调查的wild-rice其实主要确实是分布在南方，但是长江流域也有1、2种，所以还是有可能farming在北方也开始很早滴。然后我觉得这篇文章需要把握的就是wilder rice和 domesticated rice。搞清楚谁是野生的，谁是驯化的就可以了。
题目： 三个题考得都是逻辑相关，比如加强消弱什么的。
题目1： 最能undermine长江流域水稻是水稻祖宗的?
题目3： 作者是怎样利用geological graph还是什么graph来证明它的观点的。应该是从文章最后一段找，但我感觉文中没有直说，要自己推理。选项里好几个都很接近。
Since the 1970s, archaeological sites in China's Yangtze River region have yielded evidence of sophisticated rice-farming societies that predate signs of rice cultivation elsewhere in East Asia by a thousand years. Before this evidence was discovered, it had generally been assumed that rice farming began farther to the south. This scenario was based both on the geographic range of wild or free-living rice, which was not thought to extend as far north as the Yangtze, and on archaeological records of very early domestic rice from Southeast Asia and India (now known to be not so old as first reported). Proponents of the southern-origin theory point out that early rice-farming societies along the Yangtze were already highly developed and that evidence for the first stage of rice cultivation is missing. They argue tha...
新gre考试阅读机经：乙醇汽油
乙醇汽油
Although, recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing consequently,more than 100 cities in the United States still have levels of carbon monoxide, particulate matter, and ozone (generated by photochemical reactions with hydrocarbons from vehicle exhaust) that exceed legally established limits. There is a growing realization that the only effective way to achieve further reductions in vehicle emissions—short of a massive shift away from the private automobile—is to replace conventional diesel fuel and gasoline with cleaner-burning fuels such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol.
All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline. These molecules burn more cleanly than gasoline, in part because they have fewer, if and, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone. The combustion of larger molecules, which have multiple carbon-carbon bonds, involves a more complex series of reactions. These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere. On the other hand, alternative fuels do have drawbacks. Compressed natural gas wou...
新gre考试阅读机经：彗星的pristine relics
彗星的 pristine relics
The long-held perspective that comets are pristine remnants from the formation of the solar system has evolved from the prevailing views of 30 years ago, finds planetary scientist Dr.S. Alan Stern in a paper published in the journal Nature."It's fair to say that a sea change has taken place," says Stern, director of the Space Studies Department in the SwRI Space Science and Engineering Division. "We used to consider comets as wholly unchanged relics that had been stored ever since the era of solar system formation in a distant, cold, timeless deep freeze called the Oort cloud. We now appreciate that a variety of processes slowly modify comets during their storage there," he says. "As a result,it's become clear that the Oort cloud and its cousin the Kuiper Belt are not such perfect deep freezes."
The first evolutionary process to be recognized as affecting comets during their long storage was radiation damage, followed by the discovery that sandblasting from dust grains in the interstellar medium plays an important role. Next, researchers theorized that comets in the Oort cloud are heated to scientifically significant temperatures by passing stars and supernovae,says Stern. More recently, researchers are finding that comets in the Kuiper Belt are heavily damaged by collisions."It also now seems inevitable that most comets fro...
新gre考试阅读机经：Honey bee的fungeewww.examw.com
Ingestion of food containing spores of the pathogen Ascosphaera apis causes a fatal fungal disease known as chalk brood in honeybee larvae. However, larvae must be chilled to about 30°C(normal brood-comb temperature is 33-36°C)for the disease to develop.Accordingly, chalk brood is most common in spring and in small colonies. A recent study revealed that honeybees responsible for hive-temperature maintenance purposely raised the hives’ temperature when colonies were inoculated with A.apis this “fever,” or up-regulation of temperature, occurred before any larvae died, suggesting that the response is preventative and that either honeybee workers detect the infection before symptoms are visible or larvae communicate the ingestion of the pathogen. Temperature returned to normal by the end of the study, suggesting that increased temperature is not optimal when broods are not infected, as well as that the fever does not result merely from normal colony growth (i.e., an increase in the number of workers available for temperature maintenance).
6.1. The primary purpose of the passage is to
(A) discuss the findings and implications of a particular study
(B) illustrate a process that formerly had been misunderstood
(C) outline the methods used to investigate a problem
(D) provide evidence to support a controversial theory
(E) contrast alternative ...
新gre考试阅读机经：Maya Culture
Maya Culture转自:考试网 - [Examw.Com]
To understand the ancient Mayan people who lived in the area that is today southern
Mexico and Central America and the ecological difficulties they faced, one must first consider their environment, which we think of as “jungle" or 'tropical rainforest." This view is inaccurate, and the reason proves to be important. Properly speaking, tropical rainforests grow in high-rainfall equatorial areas that remain wet or humid all year round. But the Maya homeland lies more than sixteen hundred kilometers from the equator, at latitudes 17 to 22 degrees north, in a habitat termed a “seasonal tropical forest." That is, while there does tend to be a rainy season from May to October, there is also a dry season from January through April. If one focuses on the wet months, one calls the Maya homeland a "seasonal tropical forest"; if one focuses on the dry months, one could instead describe it as a "seasonal desert.”
From north to south in the Yucatan Peninsula, where the Maya lived, rainfall ranges from 18 to 100 inches (457 to 2,540 millimeters) per year, and the soils become thicker, so that the southern peninsula was agriculturally more productive and supported denser populations. But rainfall in the Maya homeland is unpredictably variable between years; some recent years have had three or f...
新gre考试阅读机经：法国二月革命
法国二月革命
In February 1848 the people of Paris rose in revolt against the constitutional monarchy of Louis-Philippe. Despite the existence of excellent narrative accounts, the February Days, as this revolt is called, have been largely ignored by social historians of the past two decades. For each of the three other major insurrections in nineteenth-century Paris—July 1830, June 1848, and May 1871—there exists at least a sketch of participants’ backgrounds and an analysis, more or less rigorous, of the reasons for the occurrence of the uprisings. Only in the case of the February Revolution do we lack a useful description of participants that might characterize it in the light of what social history has taught us about the process of revolutionary mobilization.
Two reasons for this relative neglect seem obvious. First, the insurrection of February has been overshadowed by that of June. The February Revolution overthrew a regime, to be sure, but met with so little resistance that it failed to generate any real sense of historical drama. Its successor, on the other hand, appeared to pit key socioeconomic groups in a life-or-death struggle and was widely seen by contemporary observers as marking a historical departure.Through their interpretations, which exert a continuing influence on our understanding of the revolutionary process, the impact of the events of June has been magnified, while...
新gre考试阅读机经：Mystery of the Anasazi
Mystery of the Anasazi
As the tourists prepare to depart Spruce Tree House, one asks Qumawunu the question that's on everyone's mind: Why, after having invested so much work in this place, did the ancestral Pueblo people leave it all behind?The park ranger's answer sounds well-rehearsed: "We can come up with so many thoughts about why they moved in and why they moved out. But no one really knows for sure."But it's a mystery that is finally beginning to unravel.But while Crow Canyon has brought professional archaeology to the masses, it has yet to dismantle the biggest misconception about Mesa Verde's prehistory: that the ancestral Pueblo people simply vanished."I don't think we really ever thought that they just vanished into thin air," says Kuckelman."I think the real enigma of the ancestral Pueblo people in the Mesa Verde region is, ŒWhy did they leave?'"
The ancestral Pueblo people didn't have a written language; no one left behind a detailed account of their last days in the Mesa Verde region. But Kuckelman believes that if she looks 14 hard enough at places like Goodman Point Pueblo, she can find this story written on the walls --and on the floors and in the trash heaps.There's a partially excavated kiva, a subterranean dwelling near the northwest corner, that could hold part of the story. Standing over it, Kuckelman lifts the plywood covering that will protect t...
新gre考试阅读机经：鹿背上的hamp
鹿背上的hamp中华考试网(www．Examw。com)
Which of following most logically completes the argument?The last members of a now-extinct species of a European wild deer called the giant dear lived in Ireland about 16,000 years ago. Prehistoric cave paintings in France depict this animal as having a large hump on its back. Fossils of this animal, however, do not show any hump.Nevertheless, there is no reason to conclude that the cave paintings are therefore inaccurate in this regard, since ______.
A some prehistoric cave paintings in France also depict other animals as having a hump
B fossils of the giant deer are much more common in Ireland than in France
C animal humps are composed of fatty tissue, which dose not fossilize
D the cave paintings of the giant deer were painted well before 16,000 years ago
E only one currently existing species of deer has any anatomical feature that even remotely resembles a hump
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