GMAT 考满分题库

Magoosh - 逻辑CR - 28
Naturalist: For several years, coyote have had a robust population throughout the Susquehanna National Forest. Over the past seven years, the Canic Chemical Corporation in nearby Harrisville has been releasing low levels of bromide compounds into the air and groundwater. Some of these compounds, in sufficient concentrations, are suspected of compromising the immune systems of young coyote. A recent study over the entire forest established that 30% of young coyote did not survive their first year of life. Clearly, the bromide compounds released by Canic pose a direct threat to the well-being of coyote in the forest.

The answer to which of the following would be most useful for evaluating the naturalist's reasoning?
  • AHave significant levels of these bromide compounds been measured in the blood of other mammals in the forest? 分析该选项
  • BTo what parts of the forest does the wind carry the particulate form of these bromide compounds? 分析该选项
  • CHow many of the natural springs in the forest derive from groundwater that flows in the vicinity of Harrisville? 分析该选项
  • DWhat naturally available nutrients would strengthen the immune system of young coyote against any effects of these bromide compounds? 分析该选项
  • EWhat percentage of healthy coyote survive to adulthood in the wild? 分析该选项
正确答案: E

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