GMAT OG逻辑经典题目解析!GMAT考试中，对于OG指南中的重点题型，大家要做到充分的备考，这样才能够辅助我们在考试中更好的解答这类题目。因此下面小编为大家整理了详细的内容，供大家参考!
例题1：
People who do regular volunteer work tend tolivelonger, on average, than people who do not. It has been found that “doing good,” a category that certainly includes volunteer work, releases endorphins, the brain’s natural opiates, which induce in people a feeling of well-being. Clearly, there is a connection: Regular releases of endorphins must in some way help to extend people’slives.
Which of the following, if true, most seriously undermines the force of the evidence given as support for the hypothesis that endorphins promote longevity?
A. People who do regular volunteer work are only somewhat more likely than others to characterize the work they do for a living as “doing good.”
B. Although extremely high levels of endorphins could be harmful to health, such levels are never reached as a result of the natural release of endorphins.
C. There are many people who have done some volunteer work but who do not do such work regularly.
D. People tend not to become involved in regular volunteer work unless they are healthy andenergeticto begin with.
E. Releases of endorphins are responsible for the sense of well-being experienced by many long-distance runners while running.
例题解析：
平均来说，有规律的义务工作的人往往活的更长。据发现，“做好事”包括义务工作，经常释放E 物质(内啡肽)，大脑的自然鸦片，使人感觉良好。显然，有这样一种关联：E 物质的规律释放在某种程度上肯定帮助延寿。
削弱题，削弱E 可延寿的假设的证据
A 规律义务工作的人比其他人只是稍微更可能把维生工作作为“做好事”;无关，排除。
B 尽管E 的极高水平可能对健康有害，自然释放E 的结果绝不会到达这样的水平;无关，排除。
C 很多做某种义务工作的人做这样的事不规律;无关，排
D 除非很健康，人们往往不会规律地义务工作;说明健康是义务工作的原因，削弱了义务工作导致健康，从而削弱了和义务工作相关联的E 物质导致了健康长
寿，正确
E. E 物质的释放导致很多长跑者跑步时有良好感觉;良好感觉，无关，排除。
例题2：
Although the school would receive financial benefits if it had soft drink vending machines in the cafeteria, we should not allow them. Allowing soft drink machines there would not be in our students’ interest. If our students start drinking more soft drinks, they will be less healthy.
The argument depends on which of the following?
A. If the soft drink vending machines were placed in the cafeteria,students would consume more soft drinks as a result.
B. The amount of soft drinks that most students at the school currentlydrink isnot detrimental to their health.
C. Students are apt to be healthier if they do not drink soft drinks at all than if they just drink small amounts occasionally.
D. Students will not simply bring soft drinks from home if the soft drinkvending machines are not placed in the cafeteria.
E. The school’s primary concern should be to promote good health among its students.
例题解析：
尽管在食堂放软饮售卖机学校会有财务好处，我们不应该允许它们。允许这种机器不符合学生利益。如果学生喝更多软饮，影响健康。此推理依靠一下哪个?
假设题关键因素应该包含软饮机
A 如果软饮机放在食堂，学生将消费更多软饮;将此机器放食堂与消费更多(即喝更多)联系起来，搭桥增强，正确
B 目前大多数学生喝的软饮数量对健康没有太大影响;没提到软饮机，无关，排除。
C 不喝软饮的学生比和少量软饮的学生更健康;没提软饮机，无关比较，排除。
D 如果软饮机不放在食堂，学生不会从家里带软饮;讨论的是软饮机不在食堂的情况，跳出范畴，排除。
E 学校的首要关注应该是提高学生健康;should 主观选项，且没提软饮机，排除。
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