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

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

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问题     Sea rise as a result 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(1)_____. Some countries would be inundated. Heavily populated coastal areas(2)_____ large populations occupy low-lying areas, would suffer extreme(3)_____.
    Warmer oceans would spawn stronger hurricanes and typhoons,(4)_____ coastal flooding, possibly swamping valuable agricultural lands around the world.(5)_____ water quality may result as (6)_____ flooding which forces salt water into coastal irrigation and drinking water supplies, and irreplaceable, natural(7)_____ could be flooded with ocean water destroying forever many of the(8)_____ plant and animal species living there.
    Food supplies and forests would be(9)_____ affected. Changes in rainfall patterns would disrupt agriculture. Warmer temperatures would(10)_____ grain-growing regions pole-wards. The warming would also increase and change the pest plants, such as weeds and the insects(11)_____ the crops.
    Human health would also be affected. Warming could(12)_____ tropical climate bringing with it yellow fever and other diseases. The harmful (13)_____ of localized urban air pollution would very likely be more serious in warmer(14)______. There will be some(15)_____ from warming. New sea-lanes will open in the Arctic, longer growing seasons further north will(16)_____new agricultural lands, and warmer temperature will make some of today’s colder regions more(17)_____. But these benefits will be in individual areas. The natural systems—both plant and animal—will be less able than man to cope and(18)______. Any change of temperature, rainfall, and sea level of the magnitude now(19)_____ will be destructive to natural systems and living things and(20)_____ to man as well.
(17)
选项 A、accidental
B、habitable
C、anniversary
D、ambient
答案B
解析 此处意为“气候变暖也会使现在还很寒冷的地区更 ”，habitable“适于居住”代入空格，句意通顺。accidental“意外的”：anniversary“周年的”：ambient“周围的”。
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