gwd-8-38两个选项都对？

ztlbox

Q38:

Unless tiger hunting decreases, tigers will soon be extinct in the wild. The countries in which the tigers’ habitats are located are currently debating joint legislation that would ban tiger hunting. Thus, if these countries can successfully enforce this legislation, the survival of tigers in the wild will be ensured.

The reasoning in the argument is most vulnerable to criticism on the grounds that the argument

A. assumes without sufficient warrant that a ban on tiger hunting could be successfully enforced(无关结果)

B. considers the effects of hunting on tigers without also considering the effects of hunting on other endangered animal species(无关它因)

C. fails to take into account how often tiger hunters are unsuccessful in their attempts to kill tigers(无关它因)

D. neglects to consider the results of governmental attempts in the past to limit tiger hunting(无关背景)

E. takes the removal of an impediment to the tigers’ survival as a guarantee of their survival

这里，e无疑是最好的选项，但想探讨一下其他几个，

我认为a也可起到weaken的作用，制定了规矩，得不到有效执行，也同样达不到目的，怎样才能有效的排除a呢？

lawyer_1

1.这是指出逻辑错误题，不是WEAKEN题。两者区别见“考试时如何做逻辑题”

2。原文推理：因为NOT EXTINCT----->HUNTING DECREASE。所以HUNTING DECREAS（BAN HUNTING成功）------>NOT EXTINCT。很容易看出逻辑错误为逆命题的错误，即将必要条件（HUNTING DECREASE）当作充分条件。即E。

bryan0806

A 基本上是在怀疑这句话if these countries can successfully enforce this legislation  但是注意这句话前面有个if 所以不能说它是assumes without sufficient warrant 这句话不需warrant 因为它是假定

倒是D  我觉得D也可以阿 如果那些政府以前就已经严格执行捕虎的禁令那么联合立法捕虎禁令又有什么用？  

ztlbox

我理解d选项说忽略以前的禁猎效果，以前的效果可能有好有坏，所以即可加强也可削弱，另外，joint legislation 和以前政府的the results of governmental attempts其实是不一样的，也可以说它是无关项。

bryan0806

以下是引用ztlbox在2004-10-8 20:51:00的发言：
我理解d选项说忽略以前的禁猎效果，以前的效果可能有好有坏，所以即可加强也可削弱，

同意!

g077126

对于逻辑题,有一点很重要,就是答案不可能和原文冲突.如原文说已经执行,答案说没有执行,这个答案肯定不对.

dreamforeu

实在是佩服Lawyer,感觉他象新东方的狒狒！！！

skyguard2000

Lawyer_1，太棒了！

ethyl

嘻嘻，俺感觉lawer就是狒狒啦……

狒狒说网上经常有人为了一道题争得面红耳赤滴，然后我就突然跳出来，说这个题选A，大家都开始

嗯，ETS就是这点坏，把最有迷惑性的选项放到Ａ,正确的放到E，让你抓狂……

OG的RC第317页说：5 Never assume that you have selected the best answer without first reading all the choices.

记住啊，never!

frxiao

A is totally irrevelant, since the conclusion already indicated that "if these countries can successfully enforce this legislation"