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Each year red-winged blackbirds stop in a certain region of Midland Province on their spring and fall migrations. In the fall, they eat a significant portion of the province's sunflower crop. This year Midland farmers sought permits to set out small amounts of poisoned rice during the blackbirds' spring stop in order to reduce the fall blackbird population. Some residents voiced concern that the rice could threaten certain species of rare migratory birds. Nevertheless, the wildlife agency approved the permits.

Which of the following, if true, most helps to justify the wildlife agency's approval of the permits, given the concerns voiced by some residents?
  • AIn the region where the red-winged blackbirds stop, they are the first birds to be present in the spring. 分析该选项
  • BThe poison that farmers want to use does not kill birds but rather makes them incapable of producing viable eggs. 分析该选项
  • CSince rice is not raised in Midland Province, few species of birds native to the province normally eat rice. 分析该选项
  • DWithout the permit, any farmers shown to have set out poison for the blackbirds would be heavily fined. 分析该选项
  • EThe poison that farmers got approval to use has no taste or smell that would make it detectable by birds. 分析该选项
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正确答案: A

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