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[Critical Reasoning]
试题详情
题目：
Herbicides allow cereal crops to be grown very efficiently, with virtually no competition from weeds. In Britain, partridge populations have been steadily decreasing since herbicide use became widespread. Some environmentalists claim that these birds, which live in and around cereal crop fields, are being poisoned by the herbicides. However, tests show no more than trace quantities of herbicides in partridges on herbicide-treated land. Therefore, something other than herbicide use must be responsible for the population decrease.
Which of the following, if true about Britain, most seriously weakens the argument?
选项:
A、The elimination of certain weeds from cereal crop fields has reduced the population of the small insects that live on those weeds and that form a major part of partridge chicks' diet.
B、Since partridges are valued as game birds, records of their population are more carefully kept than those for many other birds.
C、Some of the weeds that are eliminated from cereal crop fields by herbicides are much smaller than the crop plants themselves and would have no negative effect on crop yield if they were allowed to grow.
D、Birds other than partridges that live in or around cereal crop fields have also been suffering population declines.
E、The toxins contained in herbicides typically used on cereal crops can be readily identified in the tissues of animals that have ingested them.
答案:
A
提问：
原文: 用了灭草剂使得庄稼不受野草影响，而生活在庄稼地的鹌鹑鸟数量逐渐减少，环境学家认为灭草剂使得鹌鹑中毒。然而，只有很小量的灭草剂发现在鹌鹑生活地，因此，除了灭草剂还有其他因素导致了鹌鹑的数量下降。
问驳斥。
我选的D，比选项后剩下A,D,看句子整体意思A的整体是支持的，虽然D也读着不那么对劲，排除法就排A选D了。老鹰分析下吧~~
选项：
A. 消除野草使得依靠野草生存的昆虫数量减少，而这些昆虫是鹌鹑的主要食物来源。 -- 这不就是说还有其他原因导致鹌鹑数量下降吗？ 是支持啊！
B. 鹌鹑的娱乐价值高，因此关于它们数量的记录比其它鸟类保存得更好。 - 无关
C.灭草剂消除的野草比庄稼小，即使不消除也不会影响庄稼的产量。 - 无关
D.除了鹌鹑还有同样生活在庄稼地的其他鸟类的数量也减少了 - 原文没讲其他鸟类，和A比较之后，就选了D
E.灭草剂含有的毒素发现在吃了灭草剂的动物身体组织中 - 无关
解答：
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提问：
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解答：
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提问：
原文: 用了灭草剂使得庄稼不受野草影响，而生活在庄稼地的鹌鹑鸟数量逐渐减少，环境学家认为灭草剂使得鹌鹑中毒。然而，只有很小量的灭草剂发现在鹌鹑生活地，因此，除了灭草剂还有其他因素导致了鹌鹑的数量下降。
问驳斥。
我选的D，比选项后剩下A,D,看句子整体意思A的整体是支持的，虽然D也读着不那么对劲，排除法就排A选D了。老鹰分析下吧~~
选项：
A. 消除野草使得依靠野草生存的昆虫数量减少，而这些昆虫是鹌鹑的主要食物来源。 -- 这不就是说还有其他原因导致鹌鹑数量下降吗？ 是支持啊！
B. 鹌鹑的娱乐价值高，因此关于它们数量的记录比其它鸟类保存得更好。 - 无关
C.灭草剂消除的野草比庄稼小，即使不消除也不会影响庄稼的产量。 - 无关
D.除了鹌鹑还有同样生活在庄稼地的其他鸟类的数量也减少了 - 原文没讲其他鸟类，和A比较之后，就选了D
E.灭草剂含有的毒素发现在吃了灭草剂的动物身体组织中 - 无关
解答：
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阅读2297
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