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.
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Which of the following, if true, most seriously undermines the argument?
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Hunting limits for snow geese were imposed many years ago in response to a sharp decline in the population of snow geese.
It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.
The number of snow geese taken by hunters each year has grown every year for several years.
As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.
In the snow goose’s winter habitats, the goose faces no significant natural predation.
Proposal: If restriction on the population is dropped then hunting season will not end early => better control on the population of snow geese B says: Restriction has not led to hunting season ending earlier for many years => dropping restriction will have no effect on the hunting season and therefore will not help control the population of snow geese
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?
Hunting limits for snow geese were imposed many years ago in response to a sharp decline in the population of snow geese.
It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.
The number of snow geese taken by hunters each year has grown every year for several years.
As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.
In the snow goose’s winter habitats, the goose faces no significant natural predation.
The above discussion is not right. My reason is that:
- argument proposes to DROP the current restriction because it let hunters kill too LESS geeses.
- B says: The restriction should work WELL to let hunters to kill enough geeses, but the problme is " hunting season for snow geese being closed earlier than the scheduled date" . It is not the restrict's problem, so it is no reason to drop it.
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发表于 2006-5-8 16:15:00
