简单说 tranquilizer若有用到其他用途 也就是用在其他没有recollar的犀牛上 这些non collr的犀牛 生殖率比collr的高 若用到tranquilizer这些身上 就可以解释tranquilizer不是造成生育率低的原因 因为tranquilizer也有用到其他生育率高的non collar犀牛 ※ 引述《webelieve (LALA)》之铭言： : 我记得有另外一题是跟这题相同题干但是问的 方式不同 : 这题的推论应该是这样 : use tranquilizer darts -> Low fertility : Low ertility 是确定已发生的事实数据 应此可能是另有他因 : 也就是说不一定是 tranquilizer darts造成 low fertility : use tranquilizer and then Recollar -> Low fertility : (很明显的题干结论漏掉 recollar这动作 一定有漏洞! ) : 会不会是 recollar这个动作造成 female 身心受创而不孕?! : 所以答案C 的意思是 要证明是 tranquilizer 而不是recollar 造成 Low F : 比如说 : 100只 注射tranquilizer , 一部分50只 recollar, 是不是还是100只不孕 : 如果是50只 代表是 RECOLLAR 造成 : ※ 引述《pilichat (人生需要不断冒险)》之铭言： : : 74. (29534-!-item-!-188;#058&004138) : : In a certain wildlife park, park rangers are able to track the movements of : : many rhinoceroses because those animals wear radio collars. : : When, as often happens, a collar slips off, it is put back on. : : Putting a collar on a rhinoceros involves immobilizing the animal by shooting : : it with a tranquilizer dart. Female rhinoceroses that have been frequently : : recollared have significantly lower fertility rates than uncollared females. : : Probably, therefore, some substance in the tranquilizer inhibits fertility. : : In evaluating the argument, it would be most useful to determine which of : : the following? : : A. Whether there are more collared female rhinoceroses than uncollared female : : rhinoceroses in the park : : B. How the tranquilizer that is used for immobilizing rhinoceroses differs, : : if at all, from tranquilizers used in working with other large mammals : : C. How often park rangers need to use tranquilizer darts to immobilize : : rhinoceroses for reasons other than attaching radio collars : : D. Whether male rhinoceroses in the wildlife park lose their collars any : : more often than the park’s female rhinoceroses do : : E. Whether radio collars are the only practical means that park rangers : : have for tracking the movements of rhinoceroses in the park : : 删到最後剩下C : : C也是正确答案 : : 但看不懂因为其他原因而注射麻醉的频率,和题干有什麽连结... --

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