求助大神们一道OG12的逻辑

daiweih1984

A physically active lifestyle has been shown to help increase longevity. In the Wistar region of Bellaria, the average age at death is considerably higher than in any other part of the country. Wistar is the only mountainous part of Bellaria. A mountainous terrain makes even such basic activities as walking relatively strenuous; it essentially imposes a physically active lifestyle on people. Clearly, this circumstance explains the long lives of people in Wistar.

Which of the following, if true, most seriously weakens the argument?

(A) In Bellaria all medical expenses are paid by the government, so that personal income does not affect the quality of health care a person receives.

(B) The Wistar region is one of Bellaria’s least populated regions.

(C) Many people who live in the Wistar region have moved there in middle age or upon retirement.

(D) The many opportunities for hiking, skiing, and other outdoor activities that Wistar’s mountains offer make it a favorite destination for vacationing Bellarians.

(E) Per capita spending on recreational activities is no higher in Wistar than it is in other regions of Bellaria

OG的答案是C。

在解释中提到了居民们的这种生活方式是“从小到大的”。
What point weakens the argument? Consider what assumption underlies the argument that the physically active lifestyle required of living in Wistar is responsible for its residents’ relative longevity. The mountainous environment necessitates lifelong levels of rigorous physical activity that build a more robust population. What if a significant portion of the population has not been conditioned since childhood to the demands of the terrain? It is assumed here that the healthy lifestyle imposed by the terrain has shaped residents from birth and accounts for their longer life span. If many residents only moved there later in life, the argument is weakened.

求问这个到底是什么解释啊，我通读了好多遍都没有看到这种隐藏条件。

非常感谢！

BuffyK

这道题目有点难，不是特别容易判断的出答案。一眼望去，好象都是错的。按照RON的CR，整理出如下

Facts: A physically active lifestyle has been shown to help increase longevity.
          People in Wistar region live much longer than people in other areas
          Wistar 是山区，山区的路况不太好，所以这里的居民走路特别吃力。正是因为这一点，wistar的居民都是一个active
           lifestyle。therefore, 这里的人长寿。
Conclusion: it must be the active lifestyle helps people here live much longer

现在要削弱这个conclusion，就必须找出题目以外的事实或者理由。
A B D E 中的理由与削弱conclusion没有关系，对吧。C 中，说到许多居民都是到了中年或者退休以后才住到这边来。因为这些人是迁徙过来的，不能保证他们之前都有非常active lifestyle（也许他们之前的生活不active),但是他们还是长寿。那么选项C从一定程度上削弱了conclusion.

如果我解释的不清楚或者不正确，欢迎交流！

daiweih1984

BuffyK 发表于 2017-6-29 08:52
这道题目有点难，不是特别容易判断的出答案。一眼望去，好象都是错的。按照RON的CR，整理出如下

Facts: A  ...

这个解释应该就能站得住脚了。OG的解释我觉得太牵强了，全文我读了好多遍都没有发现他说的那个“与生俱来“，应该就是您这个解释了。

非常感谢！

Katthy

我也觉得这道题挺难的，我最开始选了A，因为想当然把“政府报销的医疗条件”=“比其他地方好的医疗条件”。
S/W的题真的好难把控如何正确地assume （挠头