请教费费宝典19,38两题

joywzy

以下是引用lemonee在2003-8-22 7:33:00的发言：
请问A答案是怎么不STRENTHEN 的？

我也是一样的问题，另外，E呢？E也不是加强，因为没有说明原因导致A下降。

joywzy

以下是引用cranberry在2003-8-22 20:14:00的发言：

A说的是臭氧抵挡的光线里只有UVB是伤害基因的，这一说法对结论的支持在哪里呢？当然它也没有削弱，属于无关选项
E怎么不是加强呢？它是没有直接说明结论，但它所说的情况符合结论推理出的结果，不是吗？支持并不要求说明结论，而是附和结论。

附和结论，也算加强吗？加强，一是证明结论，二是排除他因。真的没懂。 再讲讲好吗？谢谢。

joywzy

以下是引用albert在2003-8-23 22:45:00的发言：
from the passage, we know that:

Amphibian populations are declining in numbers worldwide. Not coincidentally, the earth’s ozone layer has been continuously depleted throughout the last 50 years.

lack of information about how long Amphibian population has been declining, we will a risky conclusion on the relation between .... and .... Therefore, choice E provide addtional information to support the conclusion..

albert,

do you think that how long A population has been declining is relevant to the argument ? If we say A population has been deceling for one year , it is also consistent with the argument .So i think it is irrevelant .

joywzy

albert, i eventually got it now. Thank u very much.