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【B1】 [br] 【B8】 [originaltext]The continental United States will face more extrem
【B1】 [br] 【B8】 [originaltext]The continental United States will face more extrem
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2023-07-31
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【B1】 [br] 【B8】
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 greenhouse gases will likely swell to twice their current levels by the century’s end.
"Imagine the weather during the hottest two weeks of the year," leading researcher Noah Diffenbaugh said, referring to northeast United States. "The area could experience temperatures in that range lasting for periods of up to two months by century’s end," he said.
Researchers claimed the study, run on supercomputers, is the most comprehensive climate model to date. It predicts 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 receive more rainfall in a shorter time span and that summers in the northeast would be shorter and hotter. Overall, the United States would experience a warming trend, the study predicts. "The changes our model predicts are large enough to substantially disrupt our economy and infrastructure," said Diffenbaugh.
In addition to greenhouse gasses, the model considered factors such as ocean currents cloud formations and vegetation. 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.
Scientists also checked the model by analyzing the period 1961 to 1985. "The model performed admirably," Diffenbaugh said. it’s "the most detailed projection of climate change that we have for the US."
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答案
trend
解析
此题主要考查听特定名词。解题的关键是从句中的would推出是在谈论关于今后美国环境发展的一种趋势。trend还可以用作不及物动词,表示“倾向,趋向”。
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