Calhoun stabilized the rat population ______. The main idea of this passage is that ______.

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问题 Calhoun stabilized the rat population ______.
The main idea of this passage is that ______.

选项 A、although rats are affected by overcrowding, people are not
B、data from experiments indicate that overcrowding may be an important cause of social pathology
C、the social behavior of rats is seriously affected by overcrowding
D、Calhoun’s experiments have influenced many people

答案B

解析 本题考查对文章大意的概括能力。由文章最后一段第一句"The behaviour of the rat population has parallels in human behaviour",以及同段最后一句"In any case,social scientists and city planners have been influenced by the results of this series of experiments",可以得出答案的合理推论。
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