According to the text， all of the following behaviors have been exhibited by different populations EXCEPT

According to the text， all of the following behaviors have been exhibited by different populations EXCEPT

　　[A] roughly constant population levels from year to year.

　　[B] regular cycles of increases and decreases in numbers.

　　[C] erratic increases in numbers correlated with the weather.

　　[D] unchecked increases in numbers over many generations.

参考答案：D

　　「解析」这是一道审题定位与中心主旨题。根据本题题干中的“different populations”可将本题的答案信息来源确定在首段的第一句，因为该句中的“all species”实际上指的就是题干中的“different populations”。从第一段的首句入手并且仔细阅读首段的第二句，就可以找出本题的正确选项D，因为该选项所传达的信息与原文第一段第一、二句所传达的信息不一致。考生在解题时一定要学会迅速审题定位的能力。

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