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发布时间：2006-06-23 17:07     点击：

　　(A) As the number of foxes in Minnesota decrease, the growth rate of this population of foxes begins of increase.

　　(B) As the number of woodpeckers in Vermont decreases, the growth rate of this population of woodpeckers also begins to decrease.

　　(C) As the number of prairie dogs in Oklahoma increases, the growth rate of this population of prairie dogs also begins to increase.

　　(D) After the number of beavers in Tennessee decreases, the number of predators of these beavers begins to increase.

　　(E) After the number of eagles in Montana decreases, the food supply of this population of eagles also begins to decrease.

　　4. According to the Wynne-Edwards theory as it is described in the passage, epideictic behavior displays serve the function of

　　(A) determining roosting aggregations

　　(B) locating food

　　(C) attracting predators

　　(D) regulating sexual activity

　　(E) triggering hormonal changes

　　5. The challenge posed to the Wynne-Edwards-theory by several studies is regarded by the author with

　　(A) complete indifference

　　(B) qualified acceptance

　　(C) skeptical amusement

　　(D) perplexed astonishment

　　(E) agitated dismay

　　6. Which of the following statements would provide the most of logical continuation of the final paragraph of the passage?

　　(A) Thus wynne-Edwards' theory raises serious questions about the constancy of animal population in a region.

　　(B) Because Wynne-Edwards' theory is able to explain more kinds of animal behavior than is the density- dependent theory, epideictic explanations of population regulation are now widely accepted.

　　(C) The results of one study, for instance, have suggested that group vocalizing is more often used to defend territory than to provide information about population density.

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