分页标题#e#

　　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 : MISERLY ::

　　(A) confident : arrogant

　　(B) courageouss : pugnacious

　　(C) famous : ag美国GREssive

　　(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 ::

　　(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 : invasion

　　(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
2011-09-28 16:39:00   来源：作文地带整理    双击单词自动翻译

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• 1、历年试题:美国GRE试题(一)
• 2、分页标题#e#　　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 : MISERLY ::　　(A) confident : arrogant　　(B) courageouss : pugnacious　　(C) famous : ag美国GREssive　　(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 ::　　(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 : invasion　　(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[page]分页标题#e#　　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 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.　　17. The author focuses primarily on　　(A) presenting two competing scientific theories concerning solar　　activity and evaluating geological evidence often cited to support them　　(B) giving a brief overview of some recent scientifrc developments　　in s’olar physics and assessing their impact on future climatological research　　(C) discussing the difficulties involved in linkinl: ter- restrial　　phenomena with solar activity and indicating how resolving that issue[page]分页标题

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