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 European republic of Iceland 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?

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 European republic of Iceland 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 El Chichn'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 temporarily 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.

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问题：C选项为什么就不会有张冠李戴的问题呢，1984和1982的气候情况能一样吗，C里的火山就可以试用于原文的火山吗查看答疑

问题：原文说的是在火山爆发后，欧洲遭遇严冬。因此得出大的火山爆发导致了大气变的更冷。感觉是一个cause结构，由一个客观的严冬推理出是由火山爆发导致的。C说的是火山爆发会使得气温升高，等于驳斥了客观的结果，不对。D说的是气候变化可能掩盖了某个趋势，是个他因，所以选了D。查看答疑

问题：怎么知道c中的火山是在欧洲？查看答疑

问题：其实我觉得c也有gap 首先c只是个例子，不能仅仅通过一个例子就说明火山爆发导致地区温度上升这一共性特征。其次，c选项没说是因为火山爆发引起的气温升高，只是说了火山爆发后几个月那个地方气温升高，可那一定是火山爆发引起的吗？并没有说明，所以c也不全面。 d只是不知道mask是掩饰的意思，所以很难判断查看答疑

问题：问题 weaken读完原文获得的感受是 eruption不能导致天气变得更冷选了D。觉得每一个读完感受不是很清晰。。。查看答疑

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