According to the passage, what happens to the behavior of rodents when they are artificially crowded together、

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• 1According to the passage the primary function of allelomimetic behavior in bird is to ____.

  A.defend nests against predators

  B.look at each other

  C.locate prey

  D.warn against predators 

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• 2Which of the following is the most clear example of allelomimetic、

  A.Bears hunting for carnivores.

  B.Cattle fleeing from a fire.

  C.Horses running at a racetrack.

  D.Dogs working with police officers. 

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• 3The author implies that allelomimetic behavior occurs most often among animals that ____.

  A.prey on other animals 

  B.are less intelligent than their enemies

  C.move in groups 

  D.have one sense organ that dominates perception 

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• 4Which of the following places is the most likely setting for allelomimetic behavior、

  A.A lake.

  B.A cave. 

  C.An underground tunnel.

  D.A thick forest. 

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• 5The main topic of the passage is the ____.

  A.value of allelomimetic behavior in vertebrate and invertebrate species

  B.definition and distribution of allelomimetic behavior

  C.relationship of allelomimetic behavior to the survival of the fittest

  D.personality factors that determine when an individual animal will show allelomimetic behavior 

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• 6Which of the following groups of human beings would probably show the greatest amount of allelomimetic behavior、

  A.A group of students taking a test.

  B.Tennis players competing in a tournament.

  C.A patrol of soldiers scouting for the enemy.

  D.Drivers waiting for a traffic light to chang

  E.

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• 7According to the passage, people could reduce the chance of suffering heart attack by ____. 

  A.eating less foods with a lot of cholesterol

  B.eating less of low cholesterol foods

  C.eating a lot of high cholesterol foods

  D.eating drugs 

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• 8High cholesterol foods include ____.

  A.eggs, meats and milk products

  B.potatoes, green vegetables and tomatoes

  C.corn, wheat and beef

  D.sugar, rice and butter 

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• 9Some scientists believe that there is no evidence that cholestrol in food is directly linked to ____.

  A.blood disease

  B.heart disease 

  C.infectious disease

  D.mental disorder 

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• 10Medical scientists believe that ____.

  A.tests have been designed to settle the cholesterol dispute

  B.drugs have been tested to reduce the amount of the substance in blood

  C.low cholesterol foods or anticholesterol drugs or both can reduce thechance of a heart attack 

  D.none of the statements mentioned above is correct 

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