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Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right numbers for any suitable size
Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right numbers for any suitable size
admin
2014-10-21
57
问题
Parasitic wasps lay their eggs directly into the eggs of various host insects in exactly the right numbers for any suitable size of host egg. If they laid too many eggs in a host egg, the developing wasp larvae would compete with each other to the death for nutrients and space. If too few eggs were laid, portions of the host egg would decay, killing the wasp larvae. Which of the following conclusions can properly be drawn from the information above?
选项
A、The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp’ s egg-laying behavior.
B、Host insects lack any effective defenses against the form of predation practiced by parasitic wasps.
C、Parasitic wasps learn from experience how many eggs to lay into the eggs of different host species.
D、Failure to lay enough eggs would lead to the death of the developing wasp larvae more quickly than would laying too many eggs.
E、Parasitic wasps use visual clues to calculate the size of a host egg.
答案
A
解析
这是一道比较难的题目,在读题时要关注段落中的exactly与any,且读题重点为第一句话,由第一句话的“...in exactly the right numbers for any suitable size of host egg,”我们可以知道,(A)中的“the size of the smallest host egg”属于“any suitable size”的一种,因此把“The size of the smallest hostegg”换为“the size of the largest host egg”也对,也可以取非验证;(B)中的“effective defenses against”,(C)中的“from experience”,(E)中的“visual clues”均为新概念,不能从上面段落中推出来;(D)为新比较,必然不对。
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GMAT VERBAL题库GMAT分类
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GMAT VERBAL
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