OG-196请指教：）

An unusually severe winter occured in Europe after the continent was blanketed by a blue haze resulting from the eruption of the Laki Vocanal in the European Republic of Iceland in the summerof 1984. Thus, it is evident that major eruption cause the atmosphere become cooler tham it would be otherwise.

Which of the following statement, if true, most seriously weaken the argumnet above?

D: The climatic effects of major volcano eruption can temporarily mask the general warming trend resulting from an excess of carbon dioxide in the atmosphere.

答案 不是这个，og 给的解释说这句话实际上是加强了。我觉得应该是削弱了。题目说火山喷发能让天气变冷。可是这句话说火山喷发能让天气变暖，而且还给出了原因。

偶也是D不懂。

1、temporarily这个词会不会对选项造成影响？如果没有这个词，这道题目就没得说了，肯定不选。如果有了，就觉得模模糊糊的……

mindfree说逻辑是没有模糊选项的，只有对和错。晕晕的……

2、D说the climatic effects of major eruptions can mask the warming trending resulting from an excess of carbon dioxide in the atmosphere。在这里climatic effects and warming trend都是火山爆发引起的吗？

如果是，那火山爆发从长远看会有warming trend，但是暂时temporarily会被climatic effect掩盖……越来越觉得可以waken

谢谢牛牛

196.An unusually severe winter occurred in Europe after the continent was blanketed by a blue haze resulting from the eruption of the Laki Volcano in the Europeans laceType>republiclaceType> of laceName>IcelandlaceName> in the summer of 1984. Thus, it is evident that major eruptions cause the atmosphere to become cooler than it would be otherwise.

Which of the following statements, if true, most seriously weakens the argument above?

(A) The cooling effect triggered by volcanic eruptions in 1985 was counteracted by an unusual warming of Pacific waters.

(B) There is a strong statistical link between volcanic eruptions and the severity of the rainy season in India.

(C) A few months after EI Chichon’s large eruption in April 1982, air temperatures throughout the region remained higher than expected, given the long-term weather trends.

(D) The climatic effects of major volcanic eruptions can temporality mask the general warming trend resulting from an excess of carbon dioxide in the atmosphere.

(E) Three months after an early springtime eruption in South America during the late 19th century, sea surface temperatures near the coast began to fall. C

想请教一下A，这种先承认是Cooler，然后再给出一个例外算什么？如果存在例外的话就不应该是说可以降温，但是又先把前提承认一下，不懂这是什么逻辑，谢谢大家！！！

A：由于火山喷发引起的气温下降被一股不寻常的暖流给抵消了。－－说的是火山喷发后的事情，跟火山喷发会不会引起气温下降没有关系。而且一开始也说明了，火山喷发的确是引起了气温下降，至于这个下降会不会被其他因素中和，不是问题的key。

D：抛弃修饰成分，光看主干：火山喷发mask了暖流。说明火山喷发会引起气温下降，加强。

多谢，这个可能是做逻辑时都可以采用的技巧。