考研英语 阅读真题 NO.69

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第43期 2006年text3 第4题

Dr Myers and Dr Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the data support an idea current among marine biologists that of the"shifting baseline".The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the Past. That matters because theory Suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels Most fisheries are well below that, which is a bad way to do business.

34. Dr Myers and other researchers hold that

[A] people should look for a baseline that cant work for a longer time

[B] fisheries should keep the yield below 50%of the biomass

[C] the ocean biomass should restored its original level

[D] people should adjust the fishing baseline to changing situation

【核心词汇】

take into account

重视，把...考虑进去

sustainable

adj. 可以忍受的；足可支撑的；养得起的；可持续的

详细解析

1.题目关键词

Dr Myers and other researchers hold that

2.定位关键句

Dr Myers and Dr Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the data support an idea current among marine biologists that of the"shifting baseline".The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the Past. That matters because theory Suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels Most fisheries are well below that, which is a bad way to do business.

3.题目解析

【考点】细节题

【正确项精解】根据题干中的信息快速精确定位在最后一段。该段中，研究者认为其研究数据支持了“动态基准”的观点：人们未能察觉到海洋里已经发生的巨大变化，因为他们仅回顾了过去相当短的一段时期的情况。这很重要，因为理论表明当某一目标物种的生物量达到原来基数的50％时，人们能从渔场得到最大的可持续产出。也就是说，人们应该根据变化调整捕捞基准，以确保海洋能够持续地为人类提供充足的鱼类资源。故［D］选项为正确选项，为原文信息的“概括性”总结。

【干扰项分析】文中指出：人们未能察觉到海洋里已经发生的巨大变化，因为他们仅回顾了过去相当短的一段时期的情况。时间太短指的是调查研究的跨度年份很短，并没有指出基准”应用时间的长短问题，所以［A］选项错误。［B］选项犯了典型的“偷换概念”的错误，文中的信息为：当某一目标物种的生物量达到原来基数的50％时，人们能从渔场得到最大的可持续产出。［B选项的“生物量的50％”偷换了原文的“原来基数的50％”，故［B］选项错误。［C］项同样错误，研究人员只是提出了一个“动态基准”理论，并没有提到“海洋生物量应该被恢复到其最初的水平”

【答案】D

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