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In a large, air-conditioned room in a conference center located in a city of more than a million people, well-qualified doctors

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问题     In a large, air-conditioned room in a conference center located in a city of more than a million people, well-qualified doctors of science discuss the pros and cons of global warming, and debate how the temperature of the sea is being measured. After several hours of discussion, they walk out into the warm sunshine of a summer’s day, heading off to a comfortable restaurant for lunch.
    On the same day, on the sands of small islands in the middle of the Pacific Ocean, baked hard by the burning sun, Hemi and Naqono look at the water lapping over the place where they once stored their potato plants. They watch the waves dashing gently at the feet of their straw huts which some years ago were many metres from the seashore.
    Global warming is a problem for theoretical discussion among scientists all over the world. For many Pacific Islanders it is now becoming a practical problem. While international science argues about global warming and climate change, low-lying Pacific Islands are already suffering coastal erosion and crop failures.
    In places such as Marshall Islands, where much of the land is only a metre above sea-level, villagers face leaving their slowly disappearing homes.
    Scientists and officials from 13 Pacific Island Countries discussed their concerns in a Pacific conference in Aukland, New Zealand, and examined a New Zealand computer model on climate change that could provide a valuable planning tool. Lack of meteorological and tidal research means Government agencies throughout the Pacific and the world have to rely largely on anecdotal of rising sea levels eroding foreshores, and increasingly severe droughts affecting the vital coconut crop.
    Australian research commissioned by the South Pacific Regional Environment Programme has already calculated that human greenhouse gas emissions already measured up to 1995 will cause a 5cm to 12cm sea-level rise by 2025. Pacific Island countries fear their vulnerable low-lying homes will be the first to pay the price for the emissions of industrialized nations.
    A Pacific Islands Climate Change Assistance Programme is already in place and is working on plans to help Pacific Islanders who have few resources to combat the fast-changing environmental circumstances.
    Yumi Crisostomo, of the Marshall Islands Environmental Protection Authority, said residents of some of the 1,225 islands in the group had reported alarming coastal erosion, forcing them to shift homes inland. Some islands were only about a kilometer across, so residents had little room to move. "We may have to look at the option of internal migration within the island group," he said.
选项 A、global warming is not only a theoretical problem but also a practical one.
B、there is a great difference between the rich and poor.
C、science discussion has nothing to do with the practical problem.
D、well-qualified doctors know little about the reality of the problem.
答案A
解析 推理判断题。文章首句指出"在一个有100多万人口的大城市里的宽敞的、安装着空调的会议中心的房间里，知识渊博的科学博士们正就全球气候变暖的利弊及如何测量海水的温度问题展开讨论"。接下来第二段指出"同一天，在太平洋中部小岛的沙滩上，赫米和纳科诺正站在灼热的烈日下，看着海水漫过他们曾经贮藏土豆的地方"。这说明全球气候变暖不仅仅是科学家们理论上讨论的问题，实际上也已经发生了。第三段前两句正是对第一段和第二段进行的说明：Global warming is a problem for theoretical discussion among scientists all over the world．For many Pacific Islanders it is now becoming a practical problem．
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