五个选项中真有正确答案吗?
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?
B. It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.
A..显然无关. C.如果按5%的比例被猎杀的雪鹅逐年增多,只能看出来雪鹅数量是增加了.说明前提, irrelative D. 数量增加了,占的地盘也大了, displacing威胁增大了. 说明前提,irrelative E tends to support, 因为指出了the goose 没有significant的自然天敌, 所以suggests减少其数量,需要人的努力.
至于B, 原文分明是说尽管雪鹅是a popular quarry for hunters, 但是政府却规定如果因为打猎, 雪鹅的数量减少了5%了, the hunting season ends. 无论从时态, 无论从句意,无论从逻辑关系, 怎么理解都是, hunting season 是否结束取决于 official estimates 是否达到了5%. 所以, 如果如前面几位高手所言, “ 本来5%应为50 只, 却因为猎人们能力不足,只打了10 只”, 那应该是到了scheduled date, 还没打够 5%, 怎么可能存在restriction led to 猎季提前结束的问题呢?
请指正. |