单选题
{{B}}Section D{{/B}}
In this section, there is one passage followed by 5 questions or unfinished statements. Read the passage carefully, then answer each question or complete each statement in a maximum of 10 words. Remember to write the answer on the Answer Sheet.
In this section, there is one passage followed by 5 questions or unfinished statements. Read the passage carefully, then answer each question or complete each statement in a maximum of 10 words. Remember to write the answer on the Answer Sheet.
Questions 71-75 are based on the following
passage.
Venice may still be in peril. However, the city known as La Serenissima is no longer sinking, but rising.
A new study from experts appointed by the Italian environment ministry has discovered that the level of the ground surrounding St Mark's Square--among the lowest-lying in Venice--has been raised by half a centimetre since 1973. Several other parts of the city's historic centre are as much as one centimetre higher.
Scientists say the city has been rising since a halt was called to the pumping of large amounts of ground water from artesian wells running under the city. The water supplied an industrial complex at Marghera on the mainland nearby.
This had dried out the rock below and allowed Venice to sink by up to 12 cm. Since the water has begun flowing back in, the rock has swollen like a sponge, pushing up the level of the alleyways and buildings.
The Venetians will not be putting their waterproof boots away yet, though. Although the number of high water floods has remained fairly constant over the past 30 years, smaller floods have become more common.
In 1996 Venice was hit by flooding of 80 cm. or more. Changing weather patterns are to blame, as well as damage to the lagoon from erosion and a deep channel dug to allow tankers through.
"The new study shows that Venice is not sinking the way most people believe, but of course it is still in danger," said Giorgio Sarto, senator for Venice and an urban planner.
"The city could start subsiding again in future, and we still have to act against the flood. But we've lost precious time. Given the new data, we should have started trying to raise the city 10 years ago. "
Under a new scheme, the edge of St Mark's running along the Grand Canal--which is as little as 85 cm. above sea level--would be elevated by 15 cm. to one metre above.
A section beyond would be rebuilt to slope gently upwards to a maximum height of 1.15 metres above sea level before rolling back down towards the Doge's palace.
Venice may still be in peril. However, the city known as La Serenissima is no longer sinking, but rising.
A new study from experts appointed by the Italian environment ministry has discovered that the level of the ground surrounding St Mark's Square--among the lowest-lying in Venice--has been raised by half a centimetre since 1973. Several other parts of the city's historic centre are as much as one centimetre higher.
Scientists say the city has been rising since a halt was called to the pumping of large amounts of ground water from artesian wells running under the city. The water supplied an industrial complex at Marghera on the mainland nearby.
This had dried out the rock below and allowed Venice to sink by up to 12 cm. Since the water has begun flowing back in, the rock has swollen like a sponge, pushing up the level of the alleyways and buildings.
The Venetians will not be putting their waterproof boots away yet, though. Although the number of high water floods has remained fairly constant over the past 30 years, smaller floods have become more common.
In 1996 Venice was hit by flooding of 80 cm. or more. Changing weather patterns are to blame, as well as damage to the lagoon from erosion and a deep channel dug to allow tankers through.
"The new study shows that Venice is not sinking the way most people believe, but of course it is still in danger," said Giorgio Sarto, senator for Venice and an urban planner.
"The city could start subsiding again in future, and we still have to act against the flood. But we've lost precious time. Given the new data, we should have started trying to raise the city 10 years ago. "
Under a new scheme, the edge of St Mark's running along the Grand Canal--which is as little as 85 cm. above sea level--would be elevated by 15 cm. to one metre above.
A section beyond would be rebuilt to slope gently upwards to a maximum height of 1.15 metres above sea level before rolling back down towards the Doge's palace.
填空题
What encouraging sign has been observed by experts about Venice?
填空题
The sinking of Venice used to be caused by ______.
填空题
The causes of the 1996 flooding in Venice were: ______, ______ and the digging of a channel to allow tankers to pass.
填空题
What two materials will be laid under St Mark's Square when it is raised?
填空题
The suggestion of raising the whole of St Mark's was vetoed because local authorities believed it would threaten ______.