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OG 11th-CR25

Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However, when running toward an insect, a tiger beetle will intermittently stop and then, a moment later, resume its attack. Perhaps the beetles cannot maintain their pace and must pause for a moments rest; but an alternative hypothesis is that while running, tiger beetles are unable to adequately process the resulting rapidly changing visual information and so quickly go blind and stop.
Which of the following,if discovered in experiments using artificially moved prey insects, would support one of the two hypothesis and undermine the other ?
A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately stops and runs away without its usual intermittent stoppping.

B) In pursuing a swerving insect, a beetle alters its course while running and its pauses become more frequent as the chase progresses.

C) In pursuing a moving insect, a beetle usually responds immediately to changes in the insect's direction, and it pauses equally frequently wheather the chase is up or down an incline.

D) If, when a beetle pauses,it has not gained on the insect it is pursuing, the beetle generally ends its pursuit.

E) The faster a beetle pursues an insect fleeing directly away from it, the more frequently the beetle stops.

Situation

Two hypotheses are offered to explain the sudden stop that tiger beetles make while pursuing their prey: (1) they cannot maintain the rapid pace and must rest, and (2) they run too quickly to process visual information and so temporarily go blind.

Reasoning

What point would strengthen one of the two hypotheses and weaken the other? Consider the information provided in each answer choice, remembering that information that supports one hypothesis must necessarily detract from the other. Any information that is not about pursuit or that affects the two hypotheses equally may be dismissed from consideration. If the frequency of stopping increases when the beetle follows a swerving insect and must constantly change its course, then the second hypothesis is strengthened; the beetle’s pauses increase as the variety of visual information that it needs to deal with increases.

A The hypotheses concern ongoing pursuit; since this information is not about the beetle’s continuing
pursuit of prey, it neither strengthens nor weakens either hypothesis.

B Correct. This statement provides information that strengthens the second hypothesis: the swerving
pursuit of prey and the resulting continual course adjustments appears to be forcing the beetle to stop with increasing frequency to sort the erratic visual information.  

C It this experiment, since neither vision nor tiredness appears to be problematic, the beetle could be
stopping for either reason; this information neither strengthens nor weakens either hypothesis.   

D This information is irrelevant since both the hypotheses are about mid-pursuit behaviors.

E The correlation of frequency of stops with speed affects both hypotheses equally; the pauses could be
equally due to an inability to maintain the pace or due to a need to process the visual information.

根据og的解释，Any information that is not about pursuit or that affects the two hypotheses equally may be dismissed from consideration. 那么，是不是只要比较片面的强调支持其中的一个假设，就意味着支持另一个假设了呢。（因为原文的两个解释通常某方面必然是对立的，否则就不是两个解释了，而成了一个解释了）

具体到本题，根据In pursuing a swerving insect, a beetle alters its course while running ，确实没有理由支持the beetles cannot maintain their pace and must pause for a moments rest。注意，此处是根据insect's swerving ，a beetle alters its course 而不是its pace and  pause。

至于支持第二个假设，og解释的很清楚。

支持！楼主早该发这个帖子出来了

好感激~~

贴个链接：有关首字No的药品广告问题，选是否需要医生处方（D）还是价格低选项（C），OG11第10题答案C。

请关注相关讨论：http://forum.chasedream.com/dispbbs.asp?boardID=24&ID=135966&page=1

答案是(A)

CR22 也有疑问，说重组是否带来广告收入增长，结果B，说读者订户增长。

这从理论上说不通呀。

能不能麻烦你贴出原题，以便大家讨论，谢谢！