The vireo’s comeback may prove that habitat along streams in Southern Californiais recovering from the effects of pollution, __indicator of environmental healthin a state that has lost most of its__woodlands.(  )。

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• 1Scientists have __ for years that turbulence within the gaseous clouds foundthroughout the Milky Way stymies star formation, but some of the forces behindthis disturbance remain__.(  )。

  A.doubted …insufferable

  B.posited …unknown

  C.argued …relative

  D.assumed …exoteric

  E.conveyed …insuperable

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• 2It can not be denied that the existing resources on earth will be depleted, butscientists are __ to concede the inevitability of that day, __ that newenergies can be found in the near future.(  )。

  A.bound …assuming

  B.unprepared …skeptical

  C.hesitant …convinced

  D.likely …realizing

  E.eager …hypothesizing

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• 3If a particular vaccine is produced only by one company at a single facility, there isa possibility that the supply of vaccine could grow__if the company decides tocease production.(  )。

  A.useless

  B.inexpensive

  C.abstruse

  D.repugnant

  E.scarce

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• 4The two reputable hydrogeologists drafted some highly optimistic projections—withThe__that these were speculative and should of course be tested.(  )。

  A.caveat

  B.analysis

  C.hypothesis

  D.precis

  E.imprimatur

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• 5Considering the __ of available options for investing one’s hard-earnedretirement funds, as evidenced by a plethora of daytime television advertisements aimed at appealing to the incapacitated senior, you may well find it difficult to avoid feeling__(  )。

  A.diversity …ingratiated

  B.dearth …belligerent

  C.gamut…overwhelmed

  D.appeal …mortified

  E.periodicity …exhausted

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• 6His specialty is bringing to the forefront the strange and__acts of depravity thatonly the impassive and imperturbable subconscious is __ to grasp and reckonwith.(  )。

  A.withering …surprised

  B.orthodox …avid

  C.silly …unqualified

  D.unseemly …reluctant

  E.macabre …suited

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• 7Even though avant-garde attacks on the Victorian bourgeoisie were __ inrhetoric, deficient in evidence, and malicious in intent, it does not follow that they had no__grounds.(  )。

  A.infantile …cogent

  B.florid …objective

  C.steeped …justificatory

  D.spare …intrinsic

  E.judicious …realistic

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• 8Perfect certainty belongs only to the gods; the rest of us have to make do with science and its__(  )。

  A.imperfections

  B.conclusions

  C.methodologies

  D.hyperbole

  E.resignation

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• 9After a while, his anger abated, he stopped hurling__and, as he often did aftersuch an outburst, became quite __(  )。

  A.floridities …unassuming

  B.imprecations …remorseful

  C.explications …rueful

  D.epigrams …meek

  E.hyperbole …choleric

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• 10London possessed the manner of__“ 一he was a man whose stately elegancesuggested that he deemed himself above the__.(  )。

  A.a historian …misdeed

  B.a patrician …fray

  C.a poltroon …masses'

  D.a pedant…laymen

  E.a decadent …immoral

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