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  3. People living on parts of the south coast of England face a serious problem. In 1993, the owners of a large hotel and of several

People living on parts of the south coast of England face a serious problem. In 1993, the owners of a large hotel and of several

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问题     People living on parts of the south coast of England face a serious problem. In 1993, the owners of a large hotel and of several houses discovered, to their horror, that their gardens had disappeared overnight. The sea had eaten into the soft limestone cliffs on which they had been built. While experts were studying the problem, the hotel and several houses disappeared altogether, sliding down the cliff and into the sea.
    Erosion (侵蚀) of the white cliffs along the south coast of England has always been a problem but it has become more serious in recent years. Dozens of homes have had to be abandoned as the sea has crept farther and farther inland. Experts have studied the areas most affected and have drawn up a map for local people, forecasting the year in which their homes will be swallowed up by the hungry sea.
    Angry owners have called on the Government to erect sea defenses to protect their homes. Government surveyors have pointed out that in most cases, this is impossible. New sea walls would cost hundreds of millions of pounds and would merely make the waves and currents go further along the coast, shifting the problem from one area to another. The danger is likely to continue, they say, until the waves reach an inland area of hard rock which will not be eaten as limestone is. Meanwhile, if you want to buy a cheap house with an uncertain future, apply to a house agent in one of the threatened areas on the south coast of England. You can get a house for a knockdown price but it may turn out to be a knockdown home. (282 words)
It is not feasible to build sea defenses to protect against erosion because______.
选项 A、the government is too slow in taking action
B、it is too costly and will endanger neighboring areas
C、they will be easily knocked down by waves and currents
D、house agents along the coast do not support the idea
答案B
解析 本题为细节理解题。文中最后一段提到：建筑物的所有者很愤怒，要求政府建造防护墙来保护他们的家园。而政府勘测员则指出这几乎不可能。原因有两点：一是建防护墙耗资巨大(cost hundreds of millions of pounds)；二是即使建成了防护墙。也只会使波浪和水流沿着海岸线前进，从而使侵蚀从一个地方转移到另一个地方(shifting the problem from one area to another)。故答案为B。
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