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  3. Sea rise as a consequence of global warming would immediately threaten that large fraction of the globe living at sea level. Nea

Sea rise as a consequence of global warming would immediately threaten that large fraction of the globe living at sea level. Nea

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问题     Sea rise as a consequence of global warming would immediately threaten that large fraction of the globe living at sea level. Nearly one-third of all human beings live within 36 miles of a coastline. Most of the world’s great seaport cities would be【C1】______: New Orleans, Amsterdam, Shanghai, and Cairo. Some countries—Maldives Islands in the Indian Ocean, islands in the Pacific—would be inundated. Heavily populated coastal areas such as in Bangladesh and Egypt, 【C2】______large populations occupy low-lying areas, would suffer extreme【C3】______.
    Warmer oceans would spawn stronger hurricanes and typhoons, 【C4】______in coastal flooding, possibly swamping valuable agricultural lands around the world.【C5】______water quality may result as【C6】______flooding which forces salt water into coastal irrigation and drinking water supplies, and irreplaceable, natural【C7】______could be flooded with ocean water, destroying forever many of the【C8】______plant and animal species living there.
    Food supplies and forests would be【C9】______affected. Changes in rainfall patterns would disrupt agriculture. Warmer temperatures would【C10】______grain-growing regions polewards. The warming would also increase and change the pest plants, such as weeds and the insects【C11】______the crops.
    Human health would also be affected. Warming could【C12】______tropical climate bringing with it yellow fever, malaria, and other diseases. Heat stress and heat mortality could rise. The harmful【C13】______of localized urban air pollution would very likely be more serious in warmer 【C14】______. There will be some【C15】______from warming. New sea-lanes will open in the Arctic, longer growing seasons further north will【C16】______new agricultural lands, and warmer temperature will make some of today’s colder regions more. 【C17】______. But these benefits will be in individual areas. The natural systems—both plant and animal—will be less able than man to cope and【C18】______. Any change of temperature, rainfall, and sea level of the magnitude now【C19】______will be destructive to natural systems and living things and hence to man as well.
    The list of possible consequences of global warming suggests very clearly that we must do everything we can now to understand its causes and effects and to take all measures possible to prevent and adapt to potential and inevitable disruptions【C20】______by global warming.
【C5】
选项 A、Increased
B、Reduced
C、Expanded
D、Saddened
答案B
解析 此空的前文在说海洋变暖会使龙卷风和台风更强劲，导致洪水会肆虐。洪水泛滥的结果当然是水质变差，所以A选项可以排除，C、D选项明显与原文意思不符，所以正确答案是B选项。
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