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[Critical Reasoning]

试题详情

题目:

The prairie vole, a small North American grassland rodent, breeds year-round, and a group of voles living together consists primarily of an extended family, often including two or more litters.  Voles commonly live in large groups from late autumn through winter; from spring through early autumn, however, most voles live in far smaller groups.  The seasonal variation in group size can probably be explained by a seasonal variation in mortality among young voles.
 
Which of the following, if true, provides the strongest support for the explanation offered?

选项:

A、It is in the spring and early summer that prairie vole communities generally contain the highest proportion of young voles.
B、Prairie vole populations vary dramatically in size from year to year.
C、The prairie vole subsists primarily on broad-leaved plants that are abundant only in spring.
D、Winters in the prairie voles' habitat are often harsh, with temperatures that drop well below freezing.
E、Snakes, a major predator of young prairie voles, are active only from spring through early autumn.

答案:

E

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每日一题

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提问唐老师,读完题干最后一句如何能判定是A或者E?
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每日一题
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c也在讲季节时期不同,C为何不对
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排除到最好剩下AE, 觉得A讲的更贴切,为什么正确答案是E?
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选了C,答案是E,觉得C是主动而E是被动,力度更强,所以选了C~
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