Before the year 1988, neuroscientsts _____ .

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• 1The 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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• 2The 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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• 3By 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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• 4By 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. _____ .

  A.established itself as one of the big powers

  B.was now directing the world on a new course

  C.became mature as a nation

  D.brought new rules to the world's diplomatic play

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• 5Some 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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• 6The 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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• 7What might be one of the implications of the findings、

  A.To change people's biological rhythms for different jobs.

  B.To make better use of the brain.

  C.To help people sleep well.

  D.To suit people to the pace of modern lif

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• 8Which of the following is TRUE according to the passage、

  A.The biological clock is different among hamsters.

  B.The biological clock is automatic and can't be altered.

  C.The biological rhythms can be altered with operation.

  D.The SCN is the central part of the nervous system.

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• 9The writer's attitude toward nuclear energy is _____ .

  A.negative

  B.favorable

  C.tolerant

  D.indifferent

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• 10Some people claim that nuclear energy is essential because _____ .

  A.it can meet the growing demand of an industrially developing society

  B.it represents an enormous step forward in our scientific evolution

  C.it provides a perfect solution to mass unemployment

  D.nuclear power stations can be run and maintained by relatively few technical and administrative staff

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