2. 职称英语
  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2023-07-06  46
问题     After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll(死亡人数)could have been much worse.
    More than 60 people died in this earthquake. By comparison, an earthquake of similar intensity that shook America in 1988 claimed 25,000 victims.
    Injuries and deaths were relatively less in Los Angeles because the quake occurred at 4:31 a.m. on a holiday, when traffic was light on the city’s highways. In addition, changes made to the construction codes in Los Angeles during the last 20 years have strengthened the city’s buildings and highways, making them more resistant to quakes.
    Despite the good news, civil engineers aren’ t resting on their successes. Pinned to their drawing boards are blueprints(蓝图)for improved quake-resistant buildings. The new designs should offer even greater security to cities where earthquakes often take place.
    In the past, making structures quake-resistant meant firm yet flexible materials, such as steel and wood, that bend without breaking. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations. The most recent designs give buildings brains as well as concrete and steel supports. Called smart buildings, the structures respond like living organisms to an earthquake’s vibrations. When the ground shakes and the building tips forward, the computer would force the building to shift in the opposite direction.
    The new smart structures could be very expensive to build. However, they would save many lives and would be less likely to be damaged during earthquakes. [br] It can be inferred from the passage that in minimizing the damage caused by earthquakes attention should be focused on______.
选项 A、the increasing use of rubber and steel in capital construction
B、the development of flexible building materials
C、the reduction of the impact of ground vibrations
D、early forecasts of earthquakes
答案 C
解析 推断题。根据短文第五段可知，过去人们认为建筑材料对减少地震损失很重要，但那是以前的方法，排除选项A、B。而现在重点强调的办法是减少地面震动。选项D短文没有提及，故选C。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2813452.html
相关试题推荐
随机试题
最新回复(0)