Which of the following is TRUE about Lucy according to Junger、

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• 1Jungers'report was based upon his comparison of _____ .

  A.the body size of people, apes and australopithecines

  B.the skeleton of people, apes and australopithecines

  C.the hips and leg joints of people, apes and australopithecines

  D.the size of hip and leg joints of modern people and australopithecines

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• 2Jungers'finding showed that _____ .

  A.human beings walked upright later than australopithecines

  B.bipedalism might have developed suddenly in early humans

  C.early humans might have learned to walk gradnally

  D.human beings evolved from australopithecines rather than from apes

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• 3The passage is mainly about the role of _____ .

  A.reward in promoting their children's study

  B.selfcontrol and independence in child growth

  C.emotional reaction in promoting achievement

  D.praise in promoting desired behavior

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• 4If a child gets good marks for some courses and lower marks for others，a parent of a highneed achiever will _____ .

  A.criticize him for the lower marks and praise him for the good

  B.praise him and give some suggestions for further improvement

  C.praise him for the good marks and reward him

  D.criticize him for the lower marks and punish him

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• 5In the fourth sentence of paragraph 1，the expression“berate their children”probably means _____ .

  A.praise them

  B.neglect them

  C.scold them

  D.beat them

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• 6Why is the size of the hip and leg joints imortant in establishing the human habit of bipedalism、

  A.they support human body in an upright position.

  B.they are the only observable evidence in australopithecines study.

  C.the evolution of the joints is the fastest in animals.

  D.they mark the major difference between humans and humanlike animals.

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• 7Which of the following is TRUE according to the passage、

  A.Ninety percent of all the matter in the universe is invisible.

  B.Dark matter causes visible matter to behave in a strange way.

  C.Galaxies in a cluster sometimes behave in an unusual manner.

  D.invisible matter keeps galaxies together with gravity.

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• 8In astronomical terms, a cluster _____ .

  A.consists of galaxies

  B.consists of groups

  C.makes up superclusters

  D.makes up a group

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• 9The nearer a planet is to the sun, _____ .

  A.the lighter it is

  B.the greater gravity it exerts

  C.the heavier it is

  D.the faster it orbits

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• 10According to Newton's principle, _____ .

  A.the force of gravity keeps planets orbiting around the sun rather than flying off

  B.the sun is the most massive object, making up 99．8 percent of the mass of the solar system

  C.the amount of mass determine how fast the objects travel as they orbit each other

  D.Pluto receives the least force of gravity from the sun of all the planets in the solar system

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