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  3. After the violent earthquake that shook Los Angeles in 1994, earthquake scie

After the violent earthquake that shook Los Angeles in 1994, earthquake scie

游客2024-10-02  52
问题     After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: the damage and death【C1】______could have been much worse. More than 60 people died in this earthquake.【C2】______an earthquake of similar【C3】______that shook America in 1988 claimed 25,000 victims. Injuries and deaths were relatively【C4】______in Los Angeles because the quake【C5】______at 4:31 a.m. on a holiday, when traffic was light on the city’s highways.【C6】______changes made to the construction【C7】______in Los Angeles during the last 20 years have【C8】______the city’s buildings and highways, making them more resistant【C9】______quakes.
    Despite the good news, civil engineers aren’t【C10】______their success.【C11】______to their drawing boards are blueprints for improved quake-resistant buildings. The new designs should offer【C12】______greater【C13】______to cities where earthquakes often take place.
    In the past, making structures quakeproof meant firm yet flexible materials, such as steel and wood,【C14】______bend without breaking.【C15】______people tried to lift a building off its foundation, and【C16】______rubber and steel between the building and its foundation to reduce the impact of ground【C17】______Called smart buildings, the structures respond like living organisms to an earthquake’s vibration. When the ground shakes and the building tips forward, the computer would force the building to shift in the【C18】______direction.
    The new smart structures【C19】______very expensive to build. However, they would save many lives and would be less【C20】______to be damaged during earthquakes. [br] 【C17】
选项 A、variations
B、vacancies
C、vibrations
D、ventilations
答案 C
解析 名词辨析题。variation：变更，变异；vacancy：空白，空缺；vibration：震动，颤动；ventilation：换气，通风。本文内容与地震有关，采取各种措施的原因自然是为了减缓大地“震动”带来的影响。
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