77．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，potions of the host egg would decay, killing the wasp larvae．
Which of the following conclusions can properly be drawn from the information above?
(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．
答案是A
希望各位牛人能解释下推理的过程啊！！！！
排除法
B 题干没提到
C EXPERIENCE是无关词，题目没提到
D干扰项，文中没有就DEATH TIME一类的给出比较。
E无关，题目没给到。
回头看A，宿主卵的最小SIZE是在理论上可以由黄蜂产卵的表现来决定的，这个题是总结题。BA模式，告诉你他正好下多少卵不多不少，然后告诉你PHENOMENON多了怎么样少了怎样。所以黄蜂卵有大小，那么宿主卵的最小SIZE很可能是一个黄蜂卵的大小决定的。
一点拙见，请讨论。把你问题回答完了，因为整版就你的名字是中文而且好听。。哈哈
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