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  3. Flooding is the most destructive weather disaster in the last hundred years. Wind currents turn out to be more active in colder

Flooding is the most destructive weather disaster in the last hundred years. Wind currents turn out to be more active in colder

admin2009-04-23  54
问题 Flooding is the most destructive weather disaster in the last hundred years.
Wind currents turn out to be more active in colder areas in the northern hemisphere.
选项 A、Y
B、N
C、NG
答案C
解析 第2个小标题Wind currents部分第1段：Wind currents are generated by the heating activity of the sun．The sun shines more on the area around Earth’s equator than it does on areas farther north and south，causing a heat discrepancy over the surface of the globe．In warmer regions，hot air rises up into the atmosphere，pulling cooler air into the unoccupied space．In cooler regions，cold air sinks，pushing/ driving warmer air into the unoccupied space．The rotation of the Earth breaks this cycle up，so there are several，smaller air-current cycles all along the globe．原文虽然提到了wind currents的成因，及其在warmer regions和cooler regions的活动情况，但并未比较 wind currents在哪个地区更active，故答案为NG。
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