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  3. The continental United States will face more extreme temperatures during the next century and worse rainfall along its Gulf Coas

The continental United States will face more extreme temperatures during the next century and worse rainfall along its Gulf Coas

admin2010-09-10  112
问题     The continental United States will face more extreme temperatures during the next century and worse rainfall along its Gulf Coast which has been ravaged by hurricanes this year, according to a climate study. The study warned that【B1】______gases will likely swell to twice their【B2】______levels by the century’s end.
    "Imagine the weather during the hottest two Weeks of the year," lead【B3】______Noah Diffenbaugh said, referring to northeast United States. "The area could experience temperatures in that range【B4】______for periods of up to two months by century’s end," he said.
    Researchers claimed the study, run on supercomputers, is the most comprehensive【B5】______model to date. It【B6】______the southwest United States could endure a 500 percent increase in hot events, leaving less water for the growing population, that the Gulf Coast region would【B7】______more rainfall in shorter time spans and that summers in the northeast would be shorter and hotter. Overall, the United States would experience a warming【B8】______, the study predicts. "The changes our model predicts are large enough to substantially disrupt our economy and infrastructure," said Diffenbaugh.【B9】______.
    The model considered circumstances not fully included in previous models, such as snow which reflects energy from the sun back into space, and mountain peaks, which can stand in the way of traveling weather fronts.【B10】______.
     "The model performed admirably," Diffenbaugh said.【B11】______.
【B2】
选项
答案current
解析 此题主要考查听特定形容词current。解题关键是要抓住句末的“by the century’s end”，是现在和将来两个时间段里温室气体量的比较。“current”还能作名词，表示“水流、气流；电流；趋势、趋向、潮流”的意思。
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