标题: GMAT 逻辑分析题 (23) [打印本页] 作者: sdcar2010 时间: 2010-12-7 12:13 标题: GMAT 逻辑分析题 (23) Nutritionist: A recent nutrition study confirms that nutritious breakfasts increase GMAT test taker’s final score. For one month, test takers in Group A received free nutritious breakfasts every day before their intense study, while test takers in Group B did not. At the end of the month, both groups took the same GMAT test. The average score of Group A’s test takers increased, while that of Group B’s test takers did not.
Which one of the following, if true, most strengthens the argument?
A) During the month before the study, test takers at Group A and Group B had similar average GMAT scores. B) Test takers in the study from Group A and Group B started studying at the same time of day at the same location. C) Few test takers in Group B consumed equally nutritious breakfasts during the month of the study. D) Test takers from Group A took fewer days off per person during the month of the study than did test takers from Group B. E) Test takers in Group A visited www.chasedream.com more often during the month of the study than did test takers from Group B. 作者: colasama 时间: 2010-12-7 13:29
A)？ 原文只说提高，没说对比的基础一样 A填补了这个空缺作者: sdcar2010 时间: 2010-12-7 21:55
A)？ 原文只说提高，没说对比的基础一样 A填补了这个空缺
-- by 会员 colasama (2010/12/7 13:29:18)
A is an attractive answer since it seems to make the battlefield even and make sure the fight fair. However, a similar starting point is not required for the argument. For example, if Group A increased from 700 to 730 while Group B remained at 620, the argument still holds. An increase is an increase no matter how high or how low the starting point. So answer A has no overall effect on the argument since we are not comparing Group A with Group B. Instead we are comparing changes made within Group A and those within Group B. Notice the difference between these two scenarios?作者: Politician 时间: 2010-12-8 06:19
Vote for C ? Though not sure. Both A&B look attractive, in that they instate that nothing else would likely to contribute to GroupB's performance. C stands out for indicating that the breakfast is precisely the reason why B did a better job.作者: sdcar2010 时间: 2010-12-8 07:29
LS is right!
C is the correct answer. If members of Group B also ate nutritious breakfast, the argument falls apart since members of Group B have no improvemnet in their GMAT scores.作者: colasama 时间: 2010-12-8 13:14
看错题了...看漏了free...
You did not understand your own statement. C simply removed the possibility of B ate breakfast. Thus C removes one scenario of weakening the hypothesis and makes the argument more likely.作者: 单调唱 时间: 2012-5-8 13:11
我觉得B也能strengthen结论，只是相对与C，C更好一些。是这个道理么???求解答~作者: clairejj 时间: 2012-10-16 16:43
I'm a new comer. Now I've got the chance to talk to you, my buddy. This is so warm a place in this early winter. Chatters here sound really professional, particularly the Sdcar2010. I should learn from you to improve in this friendly environment. Need your help. Pls give me a hand.作者: TakiZhao 时间: 2013-7-23 17:13
不太明白为什么是C。
说B组few of them consume equally nutritious breakfast，并没有说他们每天是吃营养早餐的多还是少啊，只是说大家吃的不一样。并不能证明营养早餐能帮助提高分数这一结论吧？
