簡單說 tranquilizer若有用到其他用途 也就是用在其他沒有recollar的犀牛上
這些non collr的犀牛 生殖率比collr的高 若用到tranquilizer這些身上
就可以解釋tranquilizer不是造成生育率低的原因
因為tranquilizer也有用到其他生育率高的non collar犀牛
※ 引述《webelieve (LALA)》之銘言：
: 我記得有另外一題是跟這題相同題幹但是問的 方式不同
: 這題的推論應該是這樣
: use tranquilizer darts -> Low fertility
: Low ertility 是確定已發生的事實數據 應此可能是另有他因
: 也就是說不一定是 tranquilizer darts造成 low fertility
: use tranquilizer and then Recollar -> Low fertility
: (很明顯的題幹結論漏掉 recollar這動作 一定有漏洞! )
: 會不會是 recollar這個動作造成 female 身心受創而不孕?!
: 所以答案C 的意思是 要證明是 tranquilizer 而不是recollar 造成 Low F
: 比如說
: 100隻 注射tranquilizer , 一部分50隻 recollar, 是不是還是100隻不孕
: 如果是50隻 代表是 RECOLLAR 造成
: ※ 引述《pilichat (人生需要不斷冒險)》之銘言：
: : 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
: : 刪到最後剩下C
: : C也是正確答案
: : 但看不懂因為其他原因而注射麻醉的頻率,和題幹有什麼連結...
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