一个PP 和OG都有的题目 请高手讲解

ken92

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

 

 

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?

 

 

(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.

我觉得A 有 因果颠倒 的感觉

文章说
                

因为host egg 大小的关西
                且
                wasps下的蛋不能太多也不能太少

所以wasps下的蛋有不同的量 

这样看来
                应该是host egg 的大小
                来决定
                wasps的下蛋行为啊?!

而不是A 所说的
                wasps 的下蛋行为来决定
                host egg 的大小
                (颠倒拉??)

奇怪
                请教

crazecat123

这道题是要得出题里要说而没说的结论(inference)。 题干说wasps根据host egg 的大小来决定下多少蛋，所以这不是答案。但从这点可以推理如果看到wasps下蛋的多少可以推断出host egg 的大小。