[求助]prep-p1-48

dirtycircle

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.

为啥选A呢，我没看出什么必然联系

Drakedirect

文章说wasp下蛋下在host egg里面，而且wasp's egg不能太多也不能太少，言外之意，wasp's 下蛋的行为决定了要选什么样的host egg。自然最小的host egg也是由其下蛋的行为所决定的。

cherry123

实在想不明白

A_zen

原文说是host egg决定wasp's egg的多少，怎么结论又是wasp's 的下蛋行为决定了smallest host egg呢？

想不明白,谁能解释下.

谢谢！

paulyyb

A的意思我是这样理解的：

已知：

1，wasp会把自己的egg下到host egg里去；

2，每个host egg里的wasp自己的egg数目由host egg的size决定；

实验：

现在观察wasp的产卵行为，后得到它在单个host egg中最少的产卵数目；则这个产卵数目对应的host egg的size就是希望找到的那个理论上的最小size