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标题: 求讲解~求讲解~求讲解~ [打印本页]

作者: 何小媛159753 时间: 2011-7-30 13:50
标题: 求讲解~求讲解~求讲解~

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.

(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，看了很多帖子，但自己还是不能直接理解出题目的意思，希望大家能帮一下小妹讲解一下题干，谢谢拉

作者: evelyn205205 时间: 2011-7-30 15:18
The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behaviors..是说可以根据wasp产卵的数目来决定宿主的卵的大小。因为提干中说了太少要死，太多也要死。因此必须正好。

D提干中没有说太多还是太少哪个更容易死。
B中说没有办法防卫也没有办法从文中推出。

作者: 何小媛159753 时间: 2011-7-31 16:38
A) The size of the smallest host egg that a wasp could theoretically parasitize can be determined from the wasp's egg-laying behavior.

A怎么解释啊，产卵习惯又是怎么得出来的呢？

作者: evelyn205205 时间: 2011-7-31 18:57
http://forum.chasedream.com/GMAT_CR/thread-29746-1-1.html
给你看个链接吧~

作者: 何小媛159753 时间: 2011-7-31 20:11
太感谢了，嘻嘻

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