gwd-17-11

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.

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

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

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

The number of snow geese taken by hunters each year has grown every year for several years.

As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.

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

  

请高人指点,谢谢！

探讨一下，我选d。

文章说结论说geese被猎杀的这段时间给了其他物种休养生息的时间。问削弱。d说由于geese太多了，扩张到了原来不去（也就是猎人也不去）的地方。那其他物种当然还会受到这些没受损伤的geese的危害。

顶！

B怎么削弱啊？

请哪位牛牛帮一下忙？

事情或许是这样的：

1。文章认为geese多了是bird少了原因

2。又认为存在狩猎限制是geese多了的原因

3。b指出，其实这个狩猎限制其实很多年没有被打破过了（狩猎量都未超过5%），所以，现在即使打破了限制，狩猎量也不一定会超过5%，故不一定会减少geese，增加bird

请指教