关于逻辑中数量范围的问题

yanzhang98

A: Strength the evidence most

B: "In a part of earth" narrow the premise. Not say all of earth

C: weaken the evidence

D: "A single wavelength" Not relative

E: Strength but with "more likely"

eyda_c

个人意见，

LSAT题确实层次清楚，此题只要抓住推理逻辑即可：

ozone layer filters out some wavelengths of light but lets others through -> one danger associated with these holes in the ozone layer could lead to severe eye damage for animals of many species

以此逻辑可解B、C、D

A错，是因为原文没说holes就是let other wavelengths of light through的原因

E与A正好相反，所以E对

好像没怎么用到Many／Most／Some概念，有待于批正。

hl2006

I am kind of debating between A and E,

then I choose A only because the logic direction with this question is from answer to passage, if A is most strongly supported by passage.

For E, I have a problem with the wording "are more likely to reach the earth's surface than.."

since original passage stated: "it entirely filters out some wavelengths ", I think the expression in E is not correct

xjlv128

和楼上错的一样，想的也一样！

会不会因为A本身太绝对所以错？GMAT很讨厌绝对的东西……

amber0919

学习．

amber0919

对于Ａ，个人观点：

结论说是严重伤害了许多物种的眼睛．

Ａ推不出来：因为也许这样的光进来了，但没有对眼睛造成严重的伤害．所以Ａ不对．

准确把握结论好重要啊．．

大家指正．

lexie

这道题我到没有注意some, all, few, a 这些数量集的概念 我的想法就是 总共有三句话 分别出现及个名词 ozone layer, holes, wavelength...这三句话的层次很清晰 分别提出holes，wavelength却没有提他们之间的联系 那么这个联系就应该是题目的答案 选项中只有(B) (E) 说了wavelength跟hole的联系 其他的选项没有提过 所以答案只能在(B) (E)中选

lexie

但是laywer的提到数量概念始终是解题的必要步骤 即使是(B)跟(E)的区分也要用到few跟some的区别

sabrina07

ding! 学习中。。。

gonghao

以下是引用lawyer_1在2004-9-19的发言：

数量的范围是逻辑题常考，特别是MUST BE问题，混淆答案也常来于此。下面一题是LSAT，先讨论，后再公布答案及解释。（VALARIE说得对，纪念完了，我们要更加努力去学习）

The importance of the ozone layer to terrestrial animals is that it entirely filters out some wavelengths of light but lets others through. Holes in the ozone layer and the dangers associated with these holes are well documented. However, one danger that has not been given sufficient attention is that these holes could lead to severe eye damage for animals of many species.

Which one of the following is most strongly supported by the statements above, if they are true.

A). All wavelengths of sunlight that can cause eye damage are filtered out by the ozone layer where it is intact.

B). Few species of animals live on a part of the earth's surface that is not threatened by holes in the ozone layer

C). Some species of animals have eyes that will not suffer any damage when exposed to unfiltered sunlight

D). A single wavelength of sunlight can cause severe damage to the eyes of most species of animals

E). Some wavelengths of sunlight that cause eye damage are more likely to reach the earth's surface where there are holes in the ozone layer than where there are not,  

个人的一点意见，比较肤浅

文章说臭氧层是过滤掉一点波长，通过一点波长。然后说，臭氧层上确实有一些洞。

然而，有一个危险没有给给予充分的注意，那就是这些洞可能会影响许多动物的眼睛

－－－－－－－－－－

然后找一个确实是洞影响眼睛的就是了。

E：有洞的地方，有害的太阳光的一些波长会达到地面。确实是洞，影响了，眼睛。

－－－－－－

lawyer对于most和many的解释的确是精确，认真学习。。。。