偶遇新题，供大家练习用 ：)

dreadpower

以下是引用mindfree在2004-5-1 4:47:00的发言：

Wonder why I did not see this post before. I choose A. I am not going to explain why A is correct. I would tell you why B and E are not

B. Since 1980, those areas that have taken flood-control measures have suffered greater flood damage than they did in the previous decade.

ETS is getting much smarter with their wrong choices. The problem with B is that it says the "flood damage" has been greater than before. It could not dispute the argument. On the contrary, there being more damage is actually supporting the argument because it can be used as evidence that the flood control is a waste of resources as the flood damage is worse.

I think that those who picked B did not read the choice very carefully. They might have misunderstood it. If I changed it a bit "Since 1980, those areas that have taken flood-control measures have suffered greater flood than they did in the previous decade". I just removed the word "damage". Now B is correct because the worsening damage can be explained by the worse flooding.

E is not correct. The reason is very simple and those who picked E should rethink their approach towards CR. In the question the argument is comparing two types of regions: one with flood control and one without. However, E does not dinstinguish between the two types of regions at all. It simply says there is more rainfall. We can safely presume that both types of regions received more rainfall. Identical conditions can not be used to explain differences here. Those who picked E might have thought that only the region who had the flood control had more rainfall.

    听了总教头分析，我如醍醐灌顶！！！太佩服总教头了！！！！

freedownload

我同意B和E不对，但我还是想不通A为什么对，

题干是：The cost of flood damage since 1980 has been greater in areas that have adopted flood-control measures than in those that have not. Thus, flood-control projects are expensive engineering mistakes and a substantial waste of resources.

A选项是：

Those areas that had not suffered flood damage before 1980 are the only ones that have not adopted flood-control measures
A说before 1980的事情，和题目中的since 1980，完全不是一回事呀。这在argue中，都可以作为没有可比性去反驳的呀。

[此贴子已经被作者于2004-5-3 6:44:07编辑过]

paopao

我也有相同的问题 A为何对 逻辑中的一个常见错误就是时间地点不对 A谈论的时间不对啊

如果我考试中碰到 会选B 选项的阅读太重要了

mindfree

It is just common sense again. Those areas never suffered any flood damage before 1980. The chance that they suffer flood damage is slim after 1980. The climate condition normally does not change much, do you agree? However, Dan never had over $100 in his possession before 1980. We can not conclude using common sense that Dan would more than likely have no more than $100 in his possession, because the financing standing changes over time.

Understand the sentence, and think.

harvardstudent

我开始选了B, 经过大家分析明白了。多谢大家的分析。

魚子醬秋天

B ?...it seems better......?

paopao

mindfree,

Thank you for your kind response. However, can we use the common sense in the logic since you assumed that the climate condition does not change .Right?

I find it is hard to connect one thing with another . In this case, from choice A , I can only understand the situation before 1980, but i cannot infer from A to get the picture of situation after 1980. Do you have any suggestion to improve my sense of connection?

Thank you very much.

wj

说一句真心话，这到题我是蒙出来的，可能是LSAT做的多了的缘故

tyghbn

(D)Faulty engineering has not been the only cause of the failure of flood-control projects

i think D makes sense too. (am i too off the hook?) from D you can even infer to A or some other "reasons". can NN comment on this?

litheliluo

这种题目在考试现场一般要蒙。我是找一个与原命题因果陈述中原因密切相关的句子，这里只有A、B。但B有明显的错误（支持而非否定原命题），所以选了A。我觉得这个方法比较有效，大家不妨试试