jacky
问题补充说明：Living Space How much living space does a person need? What happens when his space needs are not met? Scientists are doing experiments on rats to try to determine the effects of overcrowded conditions on man. Recent studies have shown that the behavior of rats is greatly affected by space. If rats have enough living space, they eat well, sleep well and produce their young well. But if their living conditions become too crowded, their behavior and even their health change obviously. They can not sleep and eat well, and signs of fear and worry become clear. The more crowded they are, and more they tend to bite each other and even kill each other. Thus, for rats, populations and violence are directly related. Is this a natural law for human society as well? Is enough space not only satisfactory, but necessary for human survival? These are interesting questionsWhat's the purpose of the experiment described in the passage?***.To find out if overcrowded conditions affect humansB.To find out the relationship between population and living conditions
A第二句“Scientistsaredoing械凯曾判代架守限减刑带experimentsonratstotrytodeterminetheeffectsofovercrowdedconditionsonman.”
