PP 1-74 (新版PP破解 文章與GWD 13-22相同 題目不同 )

[lorien1216_orig]

題目文章與GWD 13-22相同 不過題目不同 選項也不同 想請問大家的思路

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

答案C

本來選B 覺得如果鎮靜劑用在其他大型動物 也會導致生育率降低 就支持了結論
不過仔細看 B選沒有題到生育率
C選 如果使用鎮靜劑的次數非常多 犀牛常常不能動 自然就不能受的 就不是鎮靜劑本身導致生育率低
這樣想對嗎? 因為覺得 沒有比較到 collared和uncollared的犀牛...

[wolftin[origen]]

試解題

A. Whether there are more collared female rhinoceroses than uncollared female rhinoceroses in the park

題目是問 生育『率』，數量的多寡和比率沒關係

B. How the tranquilizer that is used for immobilizing rhinoceroses differs, if at all, from tranquilizers used in working with other large mammals

如何在其他動物使用 => 無關 => 就算會降低其他動物生育率，也無關犀牛的生育率

C. How often park rangers need to use tranquilizer darts to immobilize rhinoceroses for reasons other than attaching radio collars

可能有其他原因而使用鎮定劑，(卻沒有被計算在內) => 造成比較基準不同
原本：掉得多次 = 注射多次 = 生育率低
現在：沒有掉 = (有可能注射更多次) =>卻被計算成沒注射過 = 生育率高 <= 否定


D. Whether male rhinoceroses in the wildlife park lose their collars any more often than the park’s female rhinoceroses do

雖然生育是兩性的問題，不過題目只有問『母』的會不會降低，和公的沒關係

E. Whether radio collars are the only practical means that park rangers have for tracking the movements of rhinoceroses in the park

和其他追蹤法無關