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2013年4月gre考试备考:gr留学考试选择e模拟考试试题(1)

38 Questions

Directions: Each sentence below has one or two blanks, each blank indicating that

something has been omitted. Beneath the sentence are five lettered words or sets

of words. Choose the word or set of words for each blank that best fits the meaning

of the sentence as a whole.

1. Nonviolent demonstrations often create such ten- sions that a community that has

constantly refused to its injustices is forced to correct them: the injustices

can no longer be 。

(A)acknowledge ignored

(B)decrease verified

(C)tolerate accepted

(D)address eliminated

(E)explain discussed

2. Since 1813 reaction to Jane Austen s novels has oscillated between

and condescension; but in general later writers have esteemed her works more highly than

did most of her literary 。

(A)dismissal admirers

(B)adoration. .contemporaries

(C)disapprpval readers

(D)indifference followers

(E)approbation precursors

3. There are, as yet, no vegetation types or ecosystems whose study has been

to the extent that they no longer ecologists.

(A)perfected hinder

(B)exhausted interest

(C)prolonged require

(D)prevented challenge

(E)delayed benefit

4. Under ethical guidelines recently adopted by the National lnstitutes of Health,

human genes are to be manipulated only to correct diseases for which

treatments are unsatisfactory.

(A)similar

(B)most

(C)dangerous

(D)uncommon

(E)alternative

5. It was her view that the country s problems had been by foreign technocrats,

so that to invite them to come back would be counterproductive.

(A)foreseen

(B)attacked

(C)ascertained

(D)exacerbated

(E)analyzed

6. Winsor McCay, the cartoonist, could draw with incredible : his comic strip

about Little Nemo was characterized by marvelous draftsmanship and sequencing.

(A)sincerity

(B)efficiency

(C)virtuosity

(D)rapidity

(E)energy

7. The actual of Wilson s position was always by his refusal to

compromise after having initially agreed to negotiate a settlement.

(A)outcome foreshadowed

(B)logic enhanced

(C)rigidity betrayed

(D)uncertainty alleviated

(E)cowardice highlighted

Directions: In each of the foiiowing questions, a related pair of words or phrases

is followed by five lettered pairs of words or phrases. Select the lettered pair that

best expresses a relationship similar to that expressed in the original pair.

8. SEDATTVE : DROWSlNESS ::

(A)epidemic : contagiousness

(B)vaccine : virus

(C)laxative : drug

(D)anestheiic : numbness

(E)therapy : psychosis

9.LAWYER:COURTROOM::

(A)participant : team

(B)commuter : train

(C)gladiator : arena

(D)senator : caucus

(E)patient : ward

10. CURIOSITY : KNOW ::

(A)temptation : conquer

(B)starvation : eat

(C)wanderlust : travel

(D)humor : laugh

(E)survival : live

11. FRUGAL : MI高考以后出国留学SERLY ::

(A)confident : arrogant

(B)courageouss : pugnacious

(C)famous : aggressive

(D)rash : foolhardy

(E)quiet : timid

12. ANTIDOTE : POISON ::

(A)cure : recovery

(B)narcotic : sleep

(C)stimulant : relapse

(D)tonic : lethargy

(E)resuscitation : breathing

13. STYGIAN.: DARK ::出国留学预备

(A)abysmal : low

(B)cogent : contentious

(C)fortuitous.: accidental

(D)reckless : threatening

(E)cataclysmic : doomed

14. WORSHIP : SACRIFICE ::

(A)generation : pyre

(B)burial : mortuary

(C)weapon : centurion

(D)massacre : inv美国硕士留学考试asion

(E)prediction : augury

15. EVANESCENT : l)ISAPPEAR :

(A)tlansparent : penetrate

(B)onerous : struggle

(C)feckless : succeed

(D)illusory : exist

(E)pliant : yield

16. UPBRAlD : REPROACH ::

(A)dote : like

(B)lal: : stray

(C)vex : please

(D)earn : desire

(E)recast : explain

Directions: Each passage in this group is followed by questions based on its content.

After reading a passage, choose the best answer to each question. Answer all questions

following a passage on the basis of what is stated or implied in that passage.

lt has been known for many decades that the appear-

ance of sunspots is roughly periodic, with an average

cycle of eleven years. Moreover, the incidence of solar

flares and the flux of solar cosmic rays, ultraviolet radia-

tion, and x-radiation all vary directly with the sunspot (5)

cycle. But after more than a century of investigation. the

relation of these and other phenomena, known collec-

tively as the solar-activity cycle, to terrescrial weather

and climate remains unclear. For example. the sunspot

cycle and the allied rnagnetic-polarity cycle have been (10)

linked to periodicities discerned in records of such vari-

ables as rainhll. temperature, and winds. lnvariably,

however, the relation is weak. and commonly ofdubious

statistical significance.

Effects of solar variability over longer terms have also (15)

been sought. The absence of recorded sunspot activity in

the notes kept by European observers in the late seven-

teenth and early eighteenth centuries has led some schol-

ars to postulate a brief cessation of sunspot activity at

that time (a period called the Maunder minimum)。 The (20)

Maunder minimum has been linked to a span of unusual

cold in Europe extending from the sixteenth to the early

nineteenth centuries. The reality of the Maunder mini-

mum has yet to be established, however, especially since

the records that Chinese naked-eye observers of solar (25)

activity made at that time appear to contradict it. Scien-

tists have also sought evidence of long-term solar period-

icities by examining indirect climatological data, such as

fossil recoras of the thickness of ancient tree rings. These

studies, however, failed to link unequivocally terrestrial(30)

climate and the solar-activity cycle, or even to contirm

the cycle s past existenue.

If consistPn! and re!iab!e geo!sgigal~-arek-xologieal

evidence tracing the solar-activity cycle in the distant

past could be found, it might also resolve an important(35)

issue in solar physics: how to model solar activity. Cur-

rently, chere are two models of solar activity. The tirst

supposes that the Sun s internal motions (caused by

rotation and convection)interact with its large-scale

magnetic field to produce a dynamo. a device in which(40)

mechanical energy is converted into the energy of a mag-

netic field. ln short. the Sun s large-scale magnetic field

is taken to be self-sustaining, so that the solar-activity

cycle it drives would be maintained with little overall

changc for perhaps billions of years. The alternative(45)

exp)anarion supposes that the Sun s large-sca)e magnetic

field is a remnant of the field the Sun acquired when it

formed, and is not sustained against decay. In this

model. the solar mechanism dependent on the Sun s

magnetiC field runs down more quickly. Thus, the char-(50)

acteristics of the solar-activity 留学美国需要哪些cycle uvuld be expected to

change over a long period of time. Modern solar obser-

vations span too short a time to reveal whether present

cyclical solar aCtivity is a long-lived feature of the Sun,

or merely a transient phenomenon.
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