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标题: [求助]gwd11/第17题急，快考了！ [打印本页]

作者: z520m 时间: 2005-11-28 14:07
标题: [求助]gwd11/第17题急，快考了！

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?

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.

答案是B,为什么呢？这个B选项是什么意思？请xdjm们帮忙解答。

作者: 淡蓝色的回忆 时间: 2005-11-28 22:50
在论坛中找找，记得N多讨论。

作者: z520m 时间: 2005-11-29 14:00
没有找到啊？能不能给个链接？请xdjm能指点一下！！

作者: z520m 时间: 2005-11-29 17:24
这道题我有搜索了一下，没有讨论连接！

作者: z520m 时间: 2005-11-30 14:58
自己顶！有没有nn帮帮我啊！下个礼拜就要考了！！！这题还是不明白啊！！这道题到底怎么回事？？

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