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?
A. Hunting limits for snow geese were imposed many years ago in response to a sharp decline in the population of snow geese.
B. It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.
C. The number of snow geese taken by hunters each year has grown every year for several years.
D. As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.
E. In the snow goose’s winter habitats, the goose faces no significant natural predation.
Answer:B
題目是說有種最近大量增加的snow geese 會吃某種鳥
然後這種鳥就會被一個less vigorous 的物種取代
snow geese在南方過冬時獵人可獵殺
但政府規定一旦獵殺的數目超過全部5%
就得停止獵殺的行為
現在有人建議應該撤掉這項規定
因為這樣其他的物種都可以recover
題目要找weaken
對不起 我實在不太會翻譯這段文字
而且根本沒有頭緒
答案用猜的也猜錯......[/quote]
