After the recent court rulings, commercial shark fishing and shark hunting will resume in Diamond Bay. Many citizens of the communities around the bay have hailed this move, believing that a decrease in sharks will lead to an increase in all smaller fish, including the endangered Green-Gilled Silverfish, whose only ecosystem is within Diamond Bay. Ecologists, though, disagree, pointing out that a decrease in sharks will lead to a surge in Sea Lions, which are the principal predator of the Green-Gilled Silverfish.
In the argument given, the two portions in boldface play which of the following roles?
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AThe first provides support for main conclusion of the argument; the second calls that conclusion into question.
分析该选项
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BThe first describes evidence that has been taken as supporting a conclusion; the second states a contrary conclusion that is the main conclusion of the argument.
分析该选项
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CThe first is an opinion that the argument opposes; the second is evidence inconsistent with the conclusion of the argument.
分析该选项
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DThe first is a conclusion that the argument as a whole seeks to justify; the second is an explanation that supports this conclusion.
分析该选项
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EThe first supports an action as a beneficial; the second calls that evaluation into question.
分析该选项
显示答案
正确答案: B