题目内容：

 

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(石灰石)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(向内陆).Experts have studied the areas and 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 on area to another. The danger is likely to continue, they say, until the waves reach an inland area of hard rock that 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 w=may turn out to be a knockdown home.

1.What is the cause of the problem that people living on parts of the south coast of England face?

A. The rising of the sea levelB. The experts’ lack of knowledge.

C. The washing-away of limestone cliffs.             D. The disappearance of hotels, houses and gardens.

2.The experts’ duty on the problem of erosion can_____.

A. warn people whose homes are in danger.   B. provide an effective way to slow it down.

C. help to prevent it from worsening.            D. lead to its eventual solution.

3.It is not practical to build sea defenses to protect against erosion because ______.

A. house agents along the coast do not support the idea.

B. it is too costly and will endanger neighboring areas.

C. the government is too slow in taking action.

D. they will be easily knocked down by waves and currents.

4.According to the author, when buying a house along the south coast of England, people should_____.

A. take the quality of the house into consideration.

B. guard against being cheated by the house agent.

C. examine the house carefully before making a decision.

D. be aware of the potential danger involved.