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Anunusually severe winter occurred in Europe after the continent was blanketed bya 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 eruptionscause the atmosphere to become cooler than it would be otherwise. Whichof the following statements, if true, most seriously weakens the argumentabove? (A)The cooling effect triggered by volcanic eruptions in 1985 was counteracted byan unusual warming of Pacific waters. (B)There is a strong statistical link between volcanic eruptions and the severityof the rainy season in India. (C) A few months afterEl Chichn's large eruption in April 1982, air temperatures throughout theregion remained higher than expected, given the long-term weather trends. (D)The climatic effects of major volcanic eruptions can temporarily mask thegeneral warming trend resulting from an excess of carbon dioxide in theatmosphere. (E)Three months after an early springtime eruption in South America during the late 19th century, sea surface temperaturesnear the coast began to fall.
答案选C，但是不太懂，能不能每个选项都请解释一下，感激不尽！！ | 
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发表于 2013-8-22 15:38:55
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