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。 | 
