[求助]求答案和思路

jiefu

Q32:

A major chemical spill occurred five years ago at Baker’s Beach, the world’s sole nesting ground for Merrick sea turtles, and prevented nearly all the eggs laid that year from hatching.  Yet the number of adult female Merricks returning to lay their eggs at Baker’s Beach has actually increased somewhat since five years ago.  Clearly, environmentalists’ prediction that the world’s Merrick population would decline as a result of the spill has proven unfounded.

Which of the following, if true, most seriously undermines the argument offered in refutation of the environmentalists’ prediction?

 

1. The chemical spill five years ago occurred at a time when there were neither Merrick sea turtles nor Merrick sea turtle eggs on Baker’s Beach.
2. Female Merrick sea turtles begin returning to Baker’s Beach to lay their eggs when they are ten years old.
3. Under normal conditions, only a small proportion of hatchling female Merrick sea turtles survive in the ocean until adulthood and return to lay their eggs at Baker’s Beach.
4. Environmental pressures unrelated to the chemical spill have caused a significant decline in the population of one of the several species of sea birds that prey on Merrick sea turtle eggs.
5. After the chemical spill, an environmental group rejected a proposal to increase the Merrick sea turtle population by transferring eggs from Baker’s Beach to nearby beaches that had not been affected by the spill.

   Answer:  

katie83

B, the impact cannot be seen clear yet

A, support

C, 无关

D，不能weaken啊

E，无关

jiefu

请再说仔细点好么? B怎么SUPPORT的呢? 原题不是说,回来LAY EGG的FEMALE数量增加了么? 谢谢

katie83

稍等啊我看一下哦

katie83

母乌龟10年才回来下一次蛋，现在还看不出来数量到底有没有减少，文章的argument坚决认为数量一定上升了，所以只有这个是weaken的，其他的都不靠谱。是选B吧？

[此贴子已经被作者于2006-8-29 21:17:47编辑过]

jiefu

我刚才出去散步,突然有个想法,觉得应该是 A :

因为A表明了,SPILL的影响并不是只在那一刻发生,而是对后来有长时间的影响,所以,不论多少海龟回来LAY EGGS, 在一段时间内都会受影响而不能HATCH.

 

katie83

A只能说明spill对乌龟和蛋都没有影响，你不要想的太多，那样容易错

shanghai2006

感觉这个题真是绕

most seriously undermines the argument offered in refutation of the environmentalists’ prediction

environmentalists’ prediction是对world’s Merrick population would decline as a result of the spill 持负态度

refutation和undermines 相互抵消，因此题目还是要我们对world’s Merrick population would decline as a result of the spill 持负态度。

即：world’s Merrick population would decline as a result of the spill 是不会的

A：如果Chemical spill的时候，没有海龟或者蛋，那么海龟的数目下降确实不会出现

zimerman

这题应该选D吧？ 天敌减少了，所以增加了海龟的产量，但是并没说明语言不对