看完manhattan这道逻辑 我觉得我可以升天了~~

杂色百合2012

A recent research study of undergraduate students analyzed the effects of music on human emotions. Each of the 200 participants attended at least 1 two-hour concert of classical music per week over the course of 12 weeks of their spring semester. At the end of the experiment, all of the students filled out a questionnaire assessing their emotional state. Based on the results of the questionnaires, all of the 10 students who attended the greatest number of concerts reported lower stress levels and higher satisfaction with their lives. Also, most of the 20 students who attended the fewest number of concerts reported below-average levels of emotional comfort.

Which of the following must be true based on the evidence presented above?
A.Most of the 200 participants improved their emotional state and lowered their stress levels.
[td][/td]B.During each week of the experiment, the participants spent at least 2 hours less on their academic work as a result of concert attendance.
[td][/td]C.Listening to classical music for at least 2 hours per week improves the emotional well-being of the majority of young adults.
[td][/td]D.More than 6 participants attended at least 14 concerts during the course of the experiment.
[td][/td]E.At least some of the students participated in the study in order to gain free access to classical concerts.

答案选D，为什么呢？我也不知道为什么~~~下面是解析，有看的懂的NN帮忙翻译一下，我实在没耐心看懂

(D) CORRECT. We know that 20 students attended the fewest number of concerts, 10 students attended the greatest number of concerts, and the remaining 170 students attended some other number of concerts in between. The term 'greatest' indicates that there are at least 3 different numbers of concerts attended by the students (as opposed to 'greater' to distinguish between 2 different numbers).  Since each of the participants attended at least one concert per week during the 12 weeks of the experiment, all of the study participants must have attended at least 12 concerts. Even if the 20 bottom students attended the smallest possible number of concerts (i.e. 12), it must be the case that the next 170 students in the middle attended at least one more (i.e. at least 13 concerts) and the 10 most active participants must have attended at least one more than the middle group, i.e at least 14 concerts. Thus, it must be true that the 10 most active participants (i.e. more than 6 participants) attended at least 14 concerts, as stated in this answer choice. Note that if the students attended more concerts than the minimum requirement, the number of students with at least 14 concerts attended will be even greater, still validating the accuracy of this statement.

yyzixiao

不知道为啥是6个,每周一次,最少也是12次 说明那20个平均水平下的应该是12次,如果是最多的话,最低也应该是听了14场,但是为啥是最少6个人听了14场 我也不懂

leonjhz

我猜的： 这里那个6非常tricky。 其实如果这个数字改成7,8，9都是对的。
因为我们从文章可以看出来那个10个人肯定都至少参加了14次，因为他们最高嘛。
所以10个人参加14次， 足以说明至少6人参加了14词。
我是从那个“ (i.e. more than 6 participants) ” 猜出来的， 因为那个IE表示。比如说。

不知道这样说的通没。 哈哈哈哈

gourmettsu

我帮LZ看了一下答案。。就是说这200人分成了3堆，一堆是看concert少的，一堆是中间的，一堆是高的。

少的至少有12次，那中间的至少就有13次，那最高的10个人至少就有14次。

不过除了这个选项，剩下四个实在没什么好选的····