GWD 17-11 帮忙看看吧

adelineyao

for discussion purpose.

I would support answer choice D.

1) do agree with 116559, 文章说只要when hunting has reduced the population by five percent，那么hunting season 就会结束，因此，不论是提前结束还是按时结束，都会产生一个相同的结果，就是population of the snow geese was reduced by five percent. therefore answer B is irrelevant to the conclusion.

2) D [As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.] indicates that even the government drops the restriction, the hunters might not be able to hunt more snow geese who have already recolonized wintering grounds.  

dpreview

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[此贴子已经被作者于2008-7-30 12:32:07编辑过]

elvislg2003

I believe it's B.

the hunting season ends if and when hunting has reduced the population by five percent, according to official estimates.根据官方统计，当打到减少了5%时，狩猎季节也结束了; 同时如果在狩猎季结束之前达到5%， 则提前结束[this is teh restriction mentioned in the question]。 所以如果象B所说， it undermines the argument that lift of restriction on 5% will reduce the population of snow geese.

tomasy

upup

hedonism555

以下是引用Joey在2005-11-13 11:33:00的发言：

Q11:

Some species of Arctic birds are threatened by recent sharp increases in the population of snow geese, which breed in the Arctic and are displacing birds of less vigorous species.  Although snow geese are a popular quarry for hunters in the southern regions where they winter, the hunting season ends if and when hunting has reduced the population by five percent, according to official estimates.  Clearly, dropping this restriction would allow the other species to recover.

当狩猎数量是总数量减少５％时，狩猎期被禁止＝〉结论，放弃这个制度可以给别的种族的鸟留下ｒｅｃｏｖｅｒ的机会（其中暗含一个过渡：放弃制度会使天鹅受到捕杀的增多）

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

1. Hunting limits for snow geese were imposed many years ago in response to a sharp decline in the population of snow geese.　几年前，无关


2. It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.　连续很多年因为这项政策导致狩猎期提前结束=〉被捕杀得天鹅少了=〉别的鸟类不能recovery　


3. The number of snow geese taken by hunters each year has grown every year for several years. 被捕杀天鹅的天鹅每年数目都在增多，继而削弱即使不放弃捕猎的限制，别的鸟类也可以recovery


4. As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons. which means geese will expend their habitate beyond the southern region and so the  increased hunting in the south will not effect geeses in other part of Arctic region.


5. In the snow goose’s winter habitats, the goose faces no significant natural predation.

Answer: B，可是按照我以上的思路怎么也不觉得B削弱啊？

kingler

以下是引用steveyangxt在2005-12-13 8:27:00的发言：

b的意思理解有误。应该是因为这项政策导致狩猎期提前结束是很多年前的事了。 暗指禁令早不管用了 记得讨论过了 不知道在那里

不明白。确实是“这项政策导致狩猎期提前结束是很多年前的事了”，但也只能推出“现在，狩猎在按预计时间结束”，而不是“禁令早不管用”。

有一种解释：geese的数量在增加，但狩猎期长了，为什么？因为猎人不太能打到geese了，或者猎人们最多也就能打5％，达到极限了。所以，即使开放政策，猎人还是打不到geese。geese的数量减少不了，bird的数量也增教不了。

D。geese不常去的地方，不代表猎人不去。

[此贴子已经被作者于2006-1-29 9:01:11编辑过]

jinni

这道题目关键是理解B选项的意思。

B的意思是因为限制而导致狩猎期提前结束已经是很多年前的事情了，即已经很久都没有超过5%了。

所以现在是否取消限制对于狩猎的增加是没有影响的。

[此贴子已经被作者于2006-4-6 14:16:42编辑过]

cdqhndx

B不是削弱，而是加强。

我认为正确答案恰恰是大家都不注意的E，因为很多人认为它无关。

E是典型的它因削弱。即雪鹅多的原因在于它在其冬季的栖息地没有天敌而导致其数量增多。放开狩猎限制没有作用。

司香尉

以下是引用jinni在2006-4-6 14:16:00的发言：

这道题目关键是理解B选项的意思。

B的意思是因为限制而导致狩猎期提前结束已经是很多年前的事情了，即已经很久都没有超过5%了。

所以现在是否取消限制对于狩猎的增加是没有影响的。

看了JINNI的话终于明白了：

It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.

我一直把这句话的意思理解反了，以为是因为限制而导致狩猎期提前结束已经保持很多年了。现在看来，现在完成时表明这件事情已经完成，也就是已经结束了，所以应该是已经很久都没有超过5%了

shanexin

B不是这个意思吧

It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.

be动词表示状态的现在完成是暗示延续到现在，类似于实意动词的现在完成进行时