[CR. ] GWD TN-14
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.
OA: B
某種北極圈的鳥因為雪雁數量遽增而遭受威脅。
即使雪雁在過冬時常常被獵捕，
一旦雪雁數量因為獵捕而減少了5%時，狩獵季節則停止。
因此，廢除這個限制能讓其他物種生存。問削弱
(不是很清楚B的意思
是說，過去幾年以來，由於這個限制導致狩獵季節提前結束 嗎？
暗指雪雁被獵捕的數量比預期的還早達到5%？)
想請問選項B的意思以及如何weaken! 謝謝!!
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