According to the passage, which of the following factors were considered from the 1970s to the mid-1980s to influence the答案解析-雷哥GRE

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What makes a worker ant perform one particular task rather than another? From the 1970s to the mid-1980s, researchers emphasized internal factors within individual ants, such as polymorphism, the presence in the nest of workers of different shapes and sizes, each suited to a particular task. Other elements then considered to have primary influence upon an ant`s career were its age-it might change tasks as it got older-and its genetics. However, subsequent ant researchers have focused on external prompts for behavior. In advocating this approach, Deborah Gordon cites experiments in which intervention in a colony`s makeup perturbed worker activity. By removing workers or otherwise altering the nest conditions, researchers were able to change the tasks performed by individual workers.

According to the passage, which of the following factors were considered from the 1970s to the mid-1980s to influence the division of labor among a colony`s worker ants?

Ants’ inherited traits The age of the ants The ants’ experiences outside the nest

正确答案： AB 耗时：

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当前版本由 Kokooo 更新于2019-04-09 17:31:50 感谢由 Kokooo 对此题目的解答所做出的贡献。

这道题需要定位到文中howeve之前Other elements then considered to have primary influence upon an ant`s career were its age-it might change tasks as it got older-and its genetics.这句话前面提到的size和shape没有在选项里面提到，而这句中提到age和genetics，而AB选项都提到了。