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GRE出国考试模拟试题(20)
日期:2013-03-19 17:47

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  GRE出国考试模拟试题20

  SECTION 2

  Time- 30 Minutes

  38 Questions

  1. As businesses become aware that their advertising must____ the everyday concerns of consumers, their commercials will be characterized by a greater degree of ____.

  (A) allay...pessimism

  (B) address...realism

  (C) evade....verisimilitude

  (D) engage…fancy

  (E) change...sincerity

  2. Because the lawyer's methods were found to be ____, the disciplinary committee ____ his privileges.

  (A) unimpeachable...suspended

  (B) ingenious...withdrew

  (C) questionable...expanded

  (D) unscrupulous...revoked

  (E) reprehensible...augmented

  3. People of intelligence and achievement can nonetheless be so ____ and lacking in ____ that they

gamble their reputations by breaking the law to further their own ends.

  (A) devious...propensity

  (B) culpable...prosperity

  (C) obsequious...deference

  (D) truculent... independence

  (E) greedy... integrity

  4. A number of scientists have published articles ____ global warming, stating ____ that there is no solid scientific evidence to support the theory that the Earth is warming because of increases in greenhouse gases.

  (A) debunking...categorically

  (B) rejecting...paradoxically

  (C) deploring...optimistically

  (D) dismissing...hesitantly

  (E) proving...candidly

  5. The senator's attempt to convince the public that she is not interested in running for a second term is as ____ as her opponent's attempt to disguise his intention to run against her.

  (A) biased

  (B) unsuccessful

  (C) inadvertent

  (D) indecisive

  (E) remote

  6. MacCrory's conversation was ____: she could never tell a story, chiefly because she always forgot it, and she was never guilty of a witticism,

  unless by accident.

  (A) scintillating

  (B) unambiguous

  (C) perspicuous

  (D) stultifying

  (E) facetious

  7. Despite its many ____, the whole-language philosophy of teaching reading continues to gain ____ among educators.

  (A) detractors...notoriety

  (B) adherents...prevalence

  (C) critics…currency

  (D) enthusiasts...popularity

  (E) practitioners… credibility

  8. CENSUS: POPULATION

  (A) interrogation : guilt

  (B) survey : price

  (C) interview : personality

  (D) questionnaire : explanation

  (E) inventory : stock

  9. AUTHENTICITY : FRAUDULENT

  (A) morality : utopian

  (B) intensity : vigorous

  (C) sincerity : hypocritical

  (D) particularity : unique

  (E) plausibility : narrated

  10. VARNISH : GLOSSY

  (A) sharpen : blunt

  (B) measure : deep

  (C) sand : smooth

  (D) approximate : precise

  (E) anchor : unstable

  11. AMENITY : COMFORTABLE

  (A) tact : circumspect

  (B) nuisance : aggravated

  (C) honorarium :grateful

  (D) favorite : envious

  (E) lounge : patient

  12. PAIN : ANALGESIC::

  (A) energy : revitalization

  (B) interest : stimulation

  (C) symptom : palliative

  (D) despair : anxiety

  (E) reward : incentive

  13. VOICE:SHOUT::

  (A) ear : overhear

  (B) eve : see

  (C) hand : clutch

  (D) nerve : feel

  (E) nose : inhale

  14. PONTIFICATE: SPEAK::

  (A) strut : walk

  (B) stare : look

  (C) patronize : frequent

  (D) eulogize : mourn

  (E) reciprocate : give

  15. BIBLIOPHILE : BOOKS::

  (A) environmentalist : pollution

  (B) zoologist : animals

  (C) gourmet : food

  (D) calligrapher : handwriting

  (E) aviator : aircraft

  16. INDIGENT : WEALTH::

  (A) presumptuous : independence

  (B) imperturbable : determination

  (C) inevitable : inescapability

  (D) indigestible : sustenance

  (E) redundant : indispensability

  This passage is based on an article published in 1990.

  Eight times within the pat million years, some-

  thing in the Earth’s climatic equation has changed.

  allowing snow in the mountains and the northern

  Line latitudes to accumulate from one season to the next

  (5) instead of melting away. Each time, the enormous ice

  sheets resulting from this continual buildup lasted tens

  of thousands of years until the end of each particular

  glacial cycle brought a warmer climate. Scientists

  speculated that these glacial cycles were ultimately

  (10) driven by astronomical factors: slow, cyclic changes

  in the eccentricity of the Earth’s orbit and in the tilt

  and orientation of its spin axis. But up until around

  30 years ago, the lack of an independent record of ice-

  age timing made the hypothesis untestable.

  (15) Then in the early 1950’s Emiliani produced the

  first complete record of the waxings and wanings

  of past glaciations. It came from a seemingly odd

  place. the seafloor. Single-cell marine organisms

  called "foraminifera" house themselves in shells made

  (20) from calcium carbonate. When the foraminifera die.

  sink to the bottom, and become part of seafloor sedi-

  ments, the carbonate of their shells preserves certain

  characteristics of the seawater they inhabited. In

  particular, the ratio of a heavy, isotope of oxygen

  (25) (oxygen-18) to ordinary oxygen (oxygen- 16) in the

  carbonate preserves the ratio of the two oxygens in

  water molecules.

  It is now understood that the ratio of oxygen iso-

  topes in seawater closely reflects the proportion of

  (30) the world’s water locked up in glaciers and ice sheets.

  A kind of meteorological distillation accounts for the

  link. Water molecules containing the heavier isotope

  tend to condense and fall as precipitation slightly

  sooner than molecules containing the lighter isotope.

  (35) Hence, as water vapor evaporated from warm oceans

  moves away from its source. its oxygen -18 returns

  more quickly to the oceans than does its oxygen-16.

  What falls as snow on distant ice sheets and mountain

  glaciers is relatively depleted of oxygen -18. As the

  (40) oxygen-18-poor ice builds up the oceans become

  relatively enriched in the Isotope. The larger the ice

  sheets grow, the higher the proportion of oxygen-18

  becomes in seawater- and hence in the sediments.

  Analyzing cores drilled from seafloor sediments,

  (45) Emiliani found that the isotopic ratio rose and fell in

  rough accord with the Earth’s astronomical cycles.

  Since that pioneering observation, oxygen-isotope

  measurements have been made on hundreds of cores

  A chronology for the combined record enables scien-

  (50) tists to show that the record contains the very same

  periodicities as the orbital processes. Over the past

  800,000 years, the global ice volume has peaked

  every 100,000 years, matching the period of the

  orbital eccentricity variation. In addition, “wrinkles”

  (55) superposed on each cycle –small decreases or surges

  in ice volume – have come at intervals of roughly

  23,000 and 41,000 years, in keeping with the pre-

17. Which of the following best expresses the main idea of the passage?

  (A) Marine sediments have allowed scientists to amass evidence tending to confirm that astronomical cycles drive the Earth’s glacial cycles.

  (B) the ratio between two different isotopes of oxygen in seawater correlates closely with the size of the Earth’s ice sheets.

  (C) Surprisingly, single-cell marine organisms provide a record of the Earth’s ice ages.

  (D) The Earth’s astronomical cycles have recently been revealed to have an unexpectedly large impact on the Earth’s climate.

  (E) The earth has experienced eight periods of intense glaciation in the past million years, primarily as a result of substantial changes in its orbit.

  18. The passage asserts that one reason that oceans become enriched in oxygen – 18 as ice sheets grow is because

  (A) water molecules containing oxygen –18 condense and fall as precipitation slightly sooner than those containing oxygen –16

  (B) the ratio of oxygen- 18 to oxygen- 16 in water vapor evaporated from oceans is different from that of these isotopes in seawater

  (C) growing ice sheets tend to lose their oxygen- I 8 as the temperature of the oceans near them gradually decreases

  (D) less water vapor evaporates from oceans during glacial periods and therefore less oxygen-18 is removed from the seawater

  (E) the freezing point of seawater rich in oxygen-18 is slight