标题: prep中一道逻辑题不懂 请教~ [打印本页] 作者: 本乡夫人 时间: 2013-8-16 21:31 标题: prep中一道逻辑题不懂 请教~ 原文为
In a certain wildlife park, park rangers are able to track the monements 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 witha traquilizer 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.
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 pratical means that park rangers have for tracking the movements of rhinoceroses in the park.
但是很疑惑的就是,题目中已经说明了female rhinocerose that have been frequently recollared, 说明麻药用量已经很多了啊··你其他目的再用,也只能是多上加多而已···卤煮顿时陷入不得解的深深痛苦中····求大牛解释···作者: 本乡夫人 时间: 2013-8-16 21:39
不要沉···不要沉····作者: 本乡夫人 时间: 2013-8-16 22:01
绝不沉····等待牛牛·····作者: 拧发条喵 时间: 2013-8-16 23:15
D 哈哈哈你笑死我了 我根本都没想到公的也会有不育的问题啊!!但是fertility公母都管的啊!!
我明白你的纠结,但是你漏看了下半句Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females.
它是拿经常重新戴上圈的 跟 没带圈 的比,没有问题,因为它说明既可能是重戴的关系,也可能是戴圈的关系
但如果它是拿 重新戴圈的 跟 戴圈了,但是没有经常重戴 的比,你就可以怀疑这里有问题
感受一下!!作者: 本乡夫人 时间: 2013-8-17 10:39
拧发条喵 发表于 2013-8-16 23:15
D 哈哈哈你笑死我了 我根本都没想到公的也会有不育的问题啊!!但是fertility公母都管的啊!!
C.How often park rangers need to use tranquilizer darts to immobilize rhinoceroses for reasons other than attaching radio collars.
不成立-也就是上环才用麻药 支持 上环的动物注射的镇定剂比不上环的动物多,所以不孕
成立-其他时候也经常用麻药 削弱 因为不上环的动物也会注射镇定剂,但是人家没事作者: 本乡夫人 时间: 2013-8-17 14:28
拧发条喵 发表于 2013-8-17 13:39
C.How often park rangers need to use tranquilizer darts to immobilize rhinoceroses for reasons oth ...