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标题: T-3-Q40. [打印本页]

作者: meckychen 时间: 2009-12-3 14:38
标题: T-3-Q40.

T-3-Q40.

Boreal owls range over a much larger area than do other owls of similar size. The reason for this behavior is 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 rather 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，B怎么理解?谢谢。

作者: meckychen 时间: 2009-12-3 20:53
自己顶一下

作者: meckychen 时间: 2009-12-4 12:02
can anyone help me ?

作者: vivianight 时间: 2010-8-14 20:17
up

作者: 2008115061 时间: 2010-8-14 20:29
OWL是要吃mammal的。B说mammal食物少的地方，OWL的数量也相对较少。这正满足了文章的说法，因为food少————》MAMMAL少（它们没吃的了）————》OWL少（它们以mammal为食）

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