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