By saying that the U.S.“was now able to take its place among the arbitors of the world's destinies”(the second sentence in paragraph 1), the author means that the U.S. _____ .

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• 1Some people _____ in part the defeat of the revolution in France and Germany to the English diplomacy.

  A.contributed

  B.attributed

  C.assigend

  D.owed

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• 2As no two speakers of a language speak _____ ,difference wiil be found in the pronunciation of the speakers.

  A.identically

  B.alike

  C.likely

  D.similarly

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• 3Scientists study the _____ between parents and their babies to better understand how infants learn.

  A.interchange

  B.interrelation

  C.intercourse

  D.interaction

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• 4When coal, the _____ of plants, is burent, chemical energy is changed into heat energy.

  A.remains

  B.remainders

  C.traces

  D.remnants

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• 5The streams, often petty and insignificant during dry weather, become raging _____ during a storm.

  A.current

  B.wave

  C.torrent

  D.tide

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• 6By calling it an“informal empire”(the second sentence in paragraph 2), these revisionists meant that the U.S. _____ .

  A.had not become a real power yet

  B.had not occupied enough territory abroad

  C.was not yet economically strong enough

  D.carried out a policy of economic aggression

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• 7The Roosevelt example is used to _____ .

  A.support the traditional view about the U.S

  B.refute the view of the recent“revisionists”

  C.refute the Monroe Doctrine

  D.support Roosevelt's foreign policy

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• 8The expression“risk being eclipsed on the world stage”(the last sentence in paragraph 3)means _____ .

  A.risk being overpowered by other nations

  B.risk being invaded by other countries

  C.risk being left behind other countries economically

  D.risk being many colonies

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• 9Before the year 1988, neuroscientsts _____ .

  A.knew little about the location of the biological clock

  B.had been searching for the clock for a long time

  C.never thought of looking for the clock in the brain

  D.thought that the clock was located in body tissues

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• 10The pupose of the experiments with hamsters was to _____ .

  A.find out how the clock works

  B.locate the clock

  C.compare two kinds of clock in hamsters

  D.explore the possibility of altering the clock

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