GWD-18-12

Q12：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?

到底选什么啊???

有NN知道吗??

斑竹来给个答案吧!!

斑竹们哪???

麻烦确认下答案吧

自己再顶一下,

NN们,快来帮帮我吧

我也不会~

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.

大概意思: 雪鹅虽然是猎手们在北方冬季较常见受欢迎的雀类,根据官方估计只要它的捕猎数量达到5%,捕猎季节就会结束.

It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date. 大概意思:禁令已经导致很多年雪鹅捕猎季节比预计时间的提前结束.

选B

文中论点:最近雪鹅的大量增加导致其他种类受到威胁,所以应该将原先每年只能捕杀雪鹅不超过5%的禁令取消才能令其它的种类恢复.

而A,C,D的论述都与文中论点一致或为论据.只有B是有削弱作用的.

因为B强调的是很多年来禁令一直致使雪鹅捕猎季节比预计时间的提前结束.这不是突然发生的.

不好意思,第一次接触GMAT题,还不会分析.