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题库 / GMATAdvanced-CR-10
Errors in the performance of repetitive or “boring” tasks—often attributed to a momentary lapse in concentration—can be serious in such activities as flying a passenger aircraft. Is there any method that would provide warning of such lapses—for example by monitoring brain activity? Researchers scanned the brains of volunteers performing a repetitive task. When the tasks were being performed correctly, the volunteers’ brains showed activity in cognitive-processing regions. However, these regions became less active several seconds before some errors were made, and another brain region, region X, became active. The researchers concluded that the monitoring of region X could provide warning of an impending error.
Which of the following, if true, most supports the researchers’ conclusion?
The cognitive effort required in performing a repetitive task diminishes significantly with increases in the number of repetitions of the task performance.
Once a mistake was made and detected, brain activity in regions associated with cognitive effort sometimes increased.
Other research found that whenever significant activity occurs in region X, it is generally with repetitive tasks, soon before an error occurs.
The diminution of brain activity in cognitive processing regions and the increase of activity in region X began at least 5 seconds before the errors occurred.
Reduced activity in brain regions associated with cognitive effort was accompanied by increased activity in regions that become active during sleep.
加强
A 认知能力随着重复task的增加而降低。（认知能力和task重复之间的关系与监控R区域来检查错误无关）
B brain activity 增加与逻辑链无关
C R区域变得活跃通常与重复task相关，总是在犯错前发生（排除他因，R区域变得活跃不是因为其他，而generally与重复task相关。）
D R区域变得活跃发生在错误前至少5秒（无关，原文已经说了several seconds，没必要重复，而且at least有可能是几个小时，削弱原文）
E 认知能力下降的原因（无关）
现象：观察到因为工作无聊马上要犯错的时候，有些区域活跃度降低，X区域活跃度增加。
结论：监控X区域就能提前预警。
A 无关，随着重复次数，effort显著减少。
B 有的时候活跃度增加，无关
C 其他研究发现，X区域变得活跃的时候，都跟在做重复工作马上要犯错的时候。这就肯定了现象和结论之间的联系。
D 这种活跃减弱和活跃度增加发生在至少5秒前。这是描述具体的情况了，偏离了“现象和结论之间是否有联系”的重点。
E 认知区域活跃度减低伴随着睡觉的时候活跃度增加。无关。
D R区域变得活跃发生在错误前至少5秒（无关，原文已经说了several seconds，没必要重复，而且at least有可能是几个小时，削弱原文）
C选项限制了事件发生的其他可能性，只有在重复机械动作的情况下，发生错误之前，X region才会活跃
一开始看到5s，想到可以给出足够时间做出反应，但其实C与D差不多也提到了在错误发生之前会有反应。
C比D优在于，C强调了无论何时，这样就提高了可以作为预警的可行性。D出了C也提到但时间外，没有提供出题干以外新但信息了。
② repetitive tasks performed √→cog region: less active b4 error while X active ∴ monitor X→warning impeding error
C:重复劳作的情况下，在错误发生前X区域会有大的反应。这样检测X区域活动从而起到预警效果是有很大可能性的，加强，保留。
D：在错误发生前至少五秒钟的时候，认知区域活动减少，X区域活动增多。这里只是重复前提，以及提前多少秒并不能加强或者削弱逻辑推理。
综上，C
C还不是重复前提？文章也已经说了错误发生前X区域会变得有反应
第一、麻烦您回复的时候语气客气一点。第二，我否掉D本身也不只是用了重复前提。本来G的题目有一定比例建就是两害取其轻。
抱歉抱歉 我想直接说问题忽略语气了 其实可以不要考虑语气 我是想直接问问题哈 sorry登录 或 注册 后可以参加讨论
D R区域变得活跃发生在错误前至少5秒（原文已经说了several seconds，没必要重复，D没有排除X区域即使在没有做错的情况下也会active的可能性（原文说做错X区域一定会active,这样就可以用X检验active，gap就是万一x经常active，如何检验？）
选项C：region X有反映往往意味着犯错
进一步加强了两者间的联系。
D属于题干已给定信息，没法加强。these regions became less active several seconds before some errors were made, and another brain region, region X, became active.
This does not provide additional support for the claim that monitoring region X will be useful as a warning of an impending error. After all, the statement that activity in region X began at least 5 seconds before the errors occurred rules out only that the increase in activity in region X occurred less than 5 seconds before the errors occurred. This statement does not rule out the possibility that the increase came, for example, many hours before the error occurred.