※ 引述《kenting15 (我不像我)》之铭言： : 32. GWD30-Q32: B : A major chemical spill occurred five years ago at Baker’s Beach, the world's : sole nesting ground for Merrick sea turtles, and prevented nearly all the : eggs laid that year from hatching. Yet the number of adult female Merricks : returning to lay their eggs at Baker’s Beach has actually increased somewhat : since five years ago. Clearly, environmentalists’prediction that the world's : Merrick population would decline as a result of the spill has proven : unfounded. : Which of the following, if true, most seriously undermines the argument : offered in refutation of the environmentalists’ prediction? : B. Female Merrick sea turtles begin returning to Baker’s Beach to lay their : eggs when they are ten years old. : 我自己定义的因果关系为 : 因:母龟跑回来下蛋的只数增加 : 果:化学污染问题的影响没有出现 : 其他的答案我都排除掉了 但不知道为什麽因果关系跟乌龟的年龄有关...... : 请问大家 感谢~! 因为乌龟十年後才会回到栖息地下蛋 因此五年前的化学污染而导致龟蛋无法孵化的後果尚未显现 换而言之可能是因为过去10~15前龟蛋孵化良好 所以这五年来才会有那麽多乌龟回来下蛋 并无法证明五年前的意外对海龟没有造成影响 因此和年龄有直接关系 若B为真那则削弱结论(->污染并不影响孵化) --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 124.8.12.96 ※ 编辑: Calla 来自: 124.8.12.96 (07/14 19:20)