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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.
卤煮选的D 刚看完选项的时候卤煮觉得所有选项都很不靠谱,都不能很好的回答上面的问题。然后看到D时, 卤煮若有所思了一下觉得如果公犀牛也经常掉项圈,打麻药,但是公犀牛和其他不带项圈的母犀牛的能生宝宝没问题(羞~捂脸跑),那么证明公犀牛的生殖能力没问题,这样就可以说明了不是由于麻药中的成分引起的。虽然麻药有可能对公母的作用不同,但卤煮已经觉得这个答案非常顺眼了,结果就选了,结果就错了。
答案选C 看了有人写的解析是说如果原因导致的麻药打的多的话,那么久能证明是药引起的繁殖能力的减弱。如果其他目的都不怎么打麻药,说明麻药用量不多,所以对生殖没有影响。不知道卤煮说清楚没有····
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··· |
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