- UID
- 828624
- 在线时间
- 小时
- 注册时间
- 2012-11-10
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
The gray squirrel, introduced into local woodlands ten years ago, threatens the indigenous population of an endangered owl species, because the squirrels’ habitual stripping of tree bark destroys the trees in which the owls nest. Some local officials have advocated setting out poison for the gray squirrels. The officials argue that this measure, while eliminating the squirrels, would pose no threat to the owl population, since the poison would be placed in containers accessible only to squirrels and other rodents.
Which one of the following, if true, most calls into question the officials’ argument?
A. One of the species whose members are likely to eat the poison is the red squirrel, a species on which owls do not prey.
B. The owls whose nesting sites are currently being destroyed by the gray squirrels feed primarily on rodents.
C. No indigenous population of any other bind species apart from the endangered owls is threatened by the gray squirrels.
D. The owls that tare threatened build their nests in the tops of trees, but the gray squirrels strip away back from the trunks.
E. The officials’ plan entails adding the poison to food sources that are usually eaten by rodents but not by other animals.
这道题狒狒逻辑上的。感觉用helr解释不了了。我是这么想的:本题因为有评论所以不是方案推理。 是因果关系即:因为poison只能被 squirrels and other rodents吃,所以可以减少squirrels的危害。所以答案应该突出“因”。但答案是B。我感觉B没有很明显涉及到因,所以被我排除了。
亲,你是如何看此问题的呢? |
|