丁丁倒数 51#

玛莎丁丁 · 发表于 2012-8-17 00:57:20

The folktale that claims that a rattlesnake's age can be determined from the number of sections in its rattle is false, but only because the rattles are brittle and sometimes partially or completely break off. So if they were not so brittle, one could reliably determine a rattlesnake's age simply from the number of sections in its rattle, because one new section is formed each time a rattlesnake molts.

Which of the following is an assumption the argument requires in order for its conclusion to be properly drawn?

A. Rattlesnakes molt exactly once a year
B. The rattles of rattlesnakes of different species are identical in appearance
C. Rattlesnakes molt more frequently when young than when old
D. The brittleness of a rattlesnake's rattle is not correlated with the length of the rattlesnake's life
E. Rattlesnakes molt as often when food is scarce as they do when food is plentiful

the logic is not complicated but one is likely to make mistakes under timing pressure. I think the choices are quite well-designed that could successfully seduce us into traps....while keeps the correct one at last!
OA is E.

丁丁倒数 51#

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