Many coastal cities will be covered with water.
				出自-2010年12月听力原文
				How vulnerable the coastal cities are
				出自-2010年12月听力原文
				Among global warming's most frightening threats is the prediction is that the polar ice-caps will melt, raising sea level so much that coastal cities from New York to Los Angles to Shanghai will be flooded.
				出自-2010年12月听力原文