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标题: 急GWD-5-33 [打印本页]

作者: kennypl 时间: 2006-10-16 10:22
标题: 急GWD-5-33

Q33:

Wolves generally avoid human settlements. For this reason, domestic sheep, though essentially easy prey for wolves, are not usually attacked by them. In Hylantia prior to 1910, farmers nevertheless lost considerable numbers of sheep to wolves each year. Attributing this to the large number for wolves, in 1910 the government began offering rewards to hunters for killing wolves. From 1910 to 1915, large numbers of wolves were killed. Yet wolf attacks on sheep increased significantly.

Which of the following, if true, most helps to explain the increase in wolf attacks on sheep?

Populations of deer and other wild animals that wolves typically prey on increased significantly in numbers from 1910 to 1915.
Prior to 1910, there were no legal restrictions in Hylantia on the hunting of wolves.
After 1910 hunters shot and wounded a substantial number of wolves, thereby greatly diminishing these wolves’ ability to prey on wild animals.
Domestic sheep are significantly less able than most wild animals to defend themselves against wolf attacks.
The systematic hunting of wolves encouraged by the program drove many wolves in Hylantia to migrate to remote mountain areas uninhabited by humans.

答案C 既然由于人捕杀,狼的捕食能力下降了,那怎么羊的数量还是减少呢,C还是没有解释呀

作者: crossover45 时间: 2006-10-16 10:47
我想C隱含的答案在wild animals, 狼受傷-->不能捕食wild animals-->轉而捕食sheep(essentially easy prey for wolves), 這樣就把C說的狼數量減少跟羊數量減少串在一起了, 符合原題所稱的現象

作者: kennypl 时间: 2006-10-16 11:07
我也感觉到了....ETS他们用心险恶啊..玩这么小的文字游戏

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