2022年英语专四听力dictation练习(5)

2021-11-25 17:38:00来源:网络

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  Living Space

  How much living space does a person need? What happenswhen his space needs

  are not met? Scientists are doingexperiments on rats to try to detemp3ine the

  effects ofovercrowded conditions on man. Recent studies have shownthat the

  behavior of rats is greatly affected by space. If ratshave enough living space,

  they eat well, sleep well and producetheir young well. But if their living

  conditions become too crowded, their behavior and even theirhealth change

  obviously. They can not sleep and eat well, and signs of fear and worry

  becomeclear. 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 societyas well? Is enough space not

  only satisfactory, but necessary for human survival? These areinteresting

  questions.

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