[求助]怎么也没想明白的逻辑两道

1. Over the last 10 years, there has been a dramatic increase in the number of people over the age

of 65 living in this region. This is evident from the fact that during this time the average age

of people living in this region has increased from approximately 52 to 57 years.

Which one of the following, if true, would most strengthen the argument?
(A) The number of people in the region under the age of 18 has increased over the last 10 years.

(B) The birth rate for the region decreased significantly over the last 10 years.

为了省事，只贴出我存疑的两个选项，正确答案是A。

2.Despite the importance it seems to have in our lives, money does not really exist. This evident

from the fact that all that would be needed to make money disappear would be a universal loss of

belief in it. We witness this phenomenon on a small scale daily in the rises and falls of

financial markets, whose fluctuations are often entirely independent of concrete causes and are

the results of mere beliefs of investors.

The conclusion of the editorialist's argument can be properly drawn if which one of the following is

assumed?
(A) Anything that exist would continue to exist even if everyone were to stop believing in it.
(B) Only if one can have mistaken beliefs about a thing does that thing exist,strictly speaking.
(C) In order to exist, an entity must have practical consequences for those who believe in it.
(D) If everyone blieves in something, then that things exist
(E)Whatever is true of money is true of financial markets generally.

正确答案是A。没想明白这个答案是怎么样推理出来的。

1的B是个无关选项。原文没有提出生率或者死亡率的事情。A，原文提到了人数增减和平均年龄的问题，是求同选项

2题说不清，没啥感觉

帮你一起答了吧

1. Over the last 10 years, there has been a dramatic increase in the number of people over the age

of 65 living in this region（conclusion）. This is evident from the fact that during this time the average age

of people living in this region has increased from approximately 52 to 57 years.（fact）

Which one of the following, if true, would most strengthen the argument?
(A) The number of people in the region under the age of 18 has increased over the last 10 years.

(B) The birth rate for the region decreased significantly over the last 10 years.

fact说的是平均年龄在10年里从52涨到了57，结论是10年里在此地区居住的65岁以上人口增加了很多 此间有个gap

假设没人出生没人死，人口自然老化（这不废话），10年后，平局年龄应从52到62

那么为什么只到了57呢，

因为18岁以下人口比以前多了（A）所以平均下就到了57

出生率下降了很多（B）侧重于表达一个对于出生率动态比较

出生率的变化不是原因， 原因是新出生的小孩 

所以此选项没有讲明新生（或来这里住的）小孩是减小平均年龄的原因 

那个

2.Despite the importance it seems to have in our lives, money does not really exist. This evident

from the fact that all that would be needed to make money disappear would be a universal loss of

belief in it. We witness this phenomenon on a small scale daily in the rises and falls of

financial markets, whose fluctuations are often entirely independent of concrete causes and are

the results of mere beliefs of investors.

The conclusion of the editorialist's argument can be properly drawn if which one of the following is

assumed?
(A) Anything that exist would continue to exist even if everyone were to stop believing in it.
(B) Only if one can have mistaken beliefs about a thing does that thing exist,strictly speaking.
(C) In order to exist, an entity must have practical consequences for those who believe in it.
(D) If everyone blieves in something, then that things exist
(E)Whatever is true of money is true of financial markets generally.

你确定是A吗  明显不对呦  他的结论是money don't exist  有关选项要证明怎样的情况下一样东西才会don't exist 

A说不管怎么样，一样东西都exist  明显错误

还是选E吧  他说money与financial market 可以类比  给他们两者拉上了关系

用lawyer的办法来验证，取非后变为 ：money与financial market 没关系， conclusion无法得出 

最后问一下

你的答案是谁给的啊

应该还是很确认的，是选A。这是LSAT2005.06 sectionIII 24题，答案是在LSAC买的试卷的官方答案。

话说，我也选的E。

谢谢你的热心解答

那ETS也犯低级错误了

又或者你把题目抄错了吧

The conclusion of the editorialist's argument can NOT be properly drawn if which one of the following is

assumed?  那选A的

以下是引用beichenxuans在2009/8/26 21:57:00的发言：

那ETS也犯低级错误了

又或者你把题目抄错了吧

The conclusion of the editorialist's argument can NOT be properly drawn if which one of the following is

assumed?  那选A的

 

题目没有错，我去check过了。。

恩，nn们再思考一下吧