标题: OG上的Boreal owls一题求问 [打印本页] 作者: 再战请勿拦 时间: 2021-5-10 20:25 标题: OG上的Boreal owls一题求问 Boreal owls range over a much larger area than do other owls of similar size. The reason for this behavior is probably that the small mammals on which owls feed are especially scarce in the forests where boreal owls live, and the relative scarcity of prey requires the owls to range more extensively to find sufficient food.
Which of the following, if true, most helps to confirm the explanation above?
A. Some boreal owls range over an area eight times larger than the area over which any other owl of similar size ranges.
B. Boreal owls range over larger areas in regions where food of the sort eaten by small mammals is sparse than they do in regions where such food is abundant.
C. After their young hatch, boreal owls must hunt more often than before in order to feed both themselves and their newly hatched young.
D. Sometimes individual boreal owls hunt near a single location for many weeks at a time and do not range farther than a few hundred yards.
E. The boreal owl requires less food, relative to its weight, than is required by members of other owl species.
答案是B，没问题
但想不太明白OG对E的解释，说it suggests the possibility that BO need not make up for relative scarcity of prey in their habitats by ranging over larger area，没太看懂, 他们range over larger area不是一个事实么？
我觉得，如果boreal owls需要的食物相对少，感觉可以排除"是因为他们吃的多，而非食物供应少，所以才要比其他猫头鹰迷失区域大" 这个可能性，犹豫了很久，还请nn们帮看看哈~
不好意思弄错了。以下是对应你的题目，GmatLa的一位同学的分析：
果因推理
果：Brange的范围大 因：因为食物缺乏
A 重复了范围大而已
B 当食物少 range大 食物多 range小。加强了因果
C 这谈论的是捕食的频率 more often
D 有时就在一个地方。 和推理无关
E 无关比较