标题: prep新92,觉得答案有问题,明明就是无关项啊~~哪位G友帮我解释下?? [打印本页] 作者: ruimiss 时间: 2010-5-2 23:15 标题: prep新92,觉得答案有问题,明明就是无关项啊~~哪位G友帮我解释下?? 92. Kate: The recent decline in numbers of the Tennessee warbler, a North American songbird that migrates each fall to coffee plantations in South America, is due to the elimination of the dense tree cover that formerly was a feature of most South American coffee plantations. Scott: The population of the spruce budworm, the warbler's favorite prey in North America, has been dropping. This is a more likely explanation of the warbler's decline. Which of the following, if true, most seriously calls Scott's hypothesis into question? A. The numbers of the Baltimore oriole, a songbird that does not eat budworms but is as dependent on South American coffee plantations as is the Tennessee warbler, are declining. B. The spruce budworm population has dropped because of a disease that can infect budworms but not Tennessee warblers. C. The drop in the population of the spruce budworm is expected to be only temporary. D. Many Tennessee warblers have begun migrating in the fall to places other than traditional coffee plantations. E. Although many North American songbirds have declined in numbers, no other species has experienced as great a decline as has the Tennessee warbler. 答案是A。D为什么不行?D说许多鸟开始在秋天迁徙到其他地方,不去coffee plantations了 这不就是削弱吗,说明鸟觉得coffee plantations那里不好了所以不去那里了。
我也犹豫了D~~明白了!A直接指出了不是因为虫子而是另一个原因~~作者: bejamin1111 时间: 2013-7-20 15:31
nice.......
!作者: Luziye 时间: 2016-7-15 20:28
Baltimore oriole是 songbird的一种,只是属性不同:不吃budworm而已。作者: 络腮虎子 时间: 2016-10-5 23:11
一点个人观点,这个题目,从题干来看,似乎是两个人各自提出了两个观点,这两个观点没有哪一个是通过指出对方的观点有问题来说明自己观点正确的。仔细看题,K和S的观点是通过一个关键词链接的,就是S观点中的more likely。记住这个关键词,我们来看A和D。A中说了另外一个鸟,不吃budworms,但是也依赖coffee plantation,它的数字在下降,这个事实是不是使得S的观点中的budworms减少导致warbler减少的论断比K的观点中的coffee plantation tree cover减少导致warbler减少的论断 更less likely?就算这两种鸟在其他方面具有某些不可比性,这个更less likely显然也是成立的,那么,因此S观点说的more likely就被削弱了。D中只说了第一种鸟开始减少去coffee plantation了,没有与S观点有联系,因此无法削弱S观点中的more likely。总结一下,这道题目的削弱方向,是S观点中的'more likely'作者: 南风吹 时间: 2018-8-19 15:29
(A) states that a bird similar to the Tennessee warbler has experienced a similar decline in numbers. The similarity between the Baltimore oriole and the Tennessee warbler is that both the birds are dependent on the coffee plantations. The difference is that the Baltimore oriole is NOT dependent on the spruce budworms.
Now, if the elimination of the tree cover in the coffee plantation were to be the cause, it would affect both the Tennessee warbler and the Baltimore oriole. Similarly, if the decline in the population of the spruce budworm were to be the cause, then it would affect only the Tennessee warbler, not the Baltimore oriole because the oriole is not dependent on the budworm.
However, the statement shows that even the oriole has experienced a decline in numbers. This indicates that the decline in the population of the budworm is not likely to be the cause for the decline in the numbers of either bird. Thus, Scott's argument is weakened. 作者: 南风吹 时间: 2018-8-19 15:41
其实这个问题也可以这样来看:
Scott说 warbler数量减少是因为食物(budworm)减少了, budworm减少是因,warbler减少是果。
A项说的是和warbler相似的一种鸟也减少了不是由于budworm减少,暗含有其它原因导致和warbler相似的这种鸟数量减少。
以上两个论述可以简化为: Scott认为 因——>果,而A项认为 第三因(两者无关暗含有第三因素导致果)——>相似果 所以可以削弱
另外需要特别注意的是:you don't have to kill the argument; you just have to provide counterevidence. that is what "call into question" means. 作者: Austin01 时间: 2018-9-5 22:14
南风吹 发表于 2018-8-19 15:29
(A) states that a bird similar to the Tennessee warbler has experienced a similar decline in numbe ...