2. 外语
  3. A. decrease B. adapt C. benefits D. enlarge E. hence F. universal G. adversely H. shift

A. decrease B. adapt C. benefits D. enlarge E. hence F. universal G. adversely H. shift

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问题     A. decrease        B. adapt        C. benefits        D. enlarge        E. hence
    F. universal       G. adversely    H. shift           I. unique         J. so
    K. suburban        L. coastal      M. resulting in    N. endangered     O. favorably
    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【C1】________. Some countries would be inundated.
    Heavily populated coastal areas where large populations occupy low-lying areas, would suffer extreme dislocation.
    Warmer oceans would spawn stronger hurricanes and typhoons,【C2】________ coastal flooding, possibly swamping valuable agricultural lands around the world. Reduced water quality may result as【C3】________ flooding which forces salt water into coastal irrigation and drinking water supplies, and irreplaceable, natural forest could be flooded with ocean water destroying forever many of the【C4】________plant and animal species living there.
    Food supplies and forests would be【C5】________ affected. Changes in rainfall patterns would disrupt agriculture. Warmer temperatures would【C6】________ grain-growing regions polewards. The warming would also increase and change the pest plants, such as weeds and the insects attacking the crops.
    Human health would also be affected. Warming could【C7】________ tropical climate bringing with it yellow fever and other diseases. The harmful effects of localized urban air pollution would very likely be more serious in warmer conditions. There will be some【C8】________ from warming. New sea-lanes will open in the Arctic, longer growing seasons further north will create new agricultural lands, and warmer temperature will make some of today’s colder regions more habitable. But these benefits will be in individual areas. The natural systems—both plant and animal—will be less able than man to cope and【C9】________. Any change of temperature, rainfall, and sea level of the magnitude now anticipated will be destructive to natural systems and living things and【C10】________ to man as well.
【C7】
选项
答案D
解析 空格前的could提示空格应填入动词原形。根据常识，气候变暖会扩大热带气候区域。词库中的enlarge“扩大”符合语义。decrease意为“缩小”，与原文意思刚好相反，可排除。
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