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标题: 求教prep中一道CR题目 [打印本页]

作者: nyonko 时间: 2016-1-23 02:39
标题: 求教prep中一道CR题目

Q25. p1-cr 48. (34221-!-item-!-188;#058&007550)

Parasiticwasps lay their eggs directly into the eggs of various host insects in exactlythe right numbers for any suitable size of host egg. If they laid too many eggs in a host egg, thedeveloping wasp larvae would compete with each other to the death for nutrientsand space. If too few eggs were laid,portions of the host egg would decay, killing the wasp larvae.

Which ofthe following conclusions can properly be drawn from the information above?

(A) Thesize of the smallest host egg that a wasp could theoretically parasitize can bedetermined from the wasp's egg-laying behavior.

(B) Hostinsects lack any effective defenses against the form of predation practiced byparasitic wasps.

(C)Parasitic wasps learn from experience how many eggs to lay into the eggs ofdifferent host species.

(D)Failure to lay enough eggs would lead to the death of the developing wasplarvae more quickly than would laying too many eggs.

(E)Parasitic wasps use visual clues to calculate the size of a host egg.

[size=13.3333px]我选择的是E

[size=13.3333px]答案给出的是A

[size=13.3333px]

[size=13.3333px]求大神们给答疑解惑一下为什么答案是A？？

[size=13.3333px]先在此谢过～～

作者: alzn2765 时间: 2016-1-23 08:37
推论题的答题特点就是题中没说的，你一定不能自己凭空假设。
比如E中的visual clues就是题干中完全没有的信息。你不可以自己假设它是看到的，万一它是用超声波呢？它是靠摸的呢？

作者: nyonko 时间: 2016-1-23 09:26

alzn2765 发表于 2016-1-23 08:37
推论题的答题特点就是题中没说的，你一定不能自己凭空假设。
比如E中的visual clues就是题干中完全没有的信 ...

原来是这样……谢谢ls帮忙解答！

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