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题库 / Prep2007E1-CR-48
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?
The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behavior.
Host insects lack any effective defenses against the form of predation practiced by parasitic wasps.
Parasitic wasps learn from experience how many eggs to lay into the eggs of different host species.
Failure to lay enough eggs would lead to the death of the developing wasp larvae more quickly than would laying too many eggs.
Parasitic wasps use visual clues to calculate the size of a host egg.
MARK. 在C上停留了很久
假如说，
我们要写一个argument, 结论是：(C) wasp是通过experience来估计要产多少卵的。
那么，要我大概会这么写：
1. wasps第一次产卵的时候啊, 那些卵最终的死亡率很高
2. 但是呢，随着时间的推进和experience的增加，卵的死亡率越来越低了
3. 因此，得到上述结论。
(而原argument不是这么写的，其实根本就没有提到experience，因此C不正确)
再看(A) The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behavior.就比较符合本题的logic flow了。
另外，不得不说，正确答案确实比较严谨，它连theoretically都加上了 ^_^
是的，我也发现通过找类似theoretically这种特别严谨的词，也是可以定位正确答案的方式（但不完全对啦，只是在纠结的时候可以辅助决策）。就好像看到only, abosolutely这种词感觉就不太对呢~
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