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  3. After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and deat

After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and deat

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问题     After the violent earthquake that shook Los Angeles in 1994,
earthquake scientists had good news to report: The damage and death toll
might have been much worse. More than 60 people died in this earthquake, 1.______
By comparison, an earthquake of similar intensity that shook America in 2,______
1998 claimed 25,000 victims.
    Injuries and deaths were relative less in Los Angeles because the 3.______
quake occurred at 4:31 a.m. in a holiday, when traffic was light on the 4.______
city’s highway. 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 resistible to quakes. 5. ______
    In the past, making structures quake-resistant meant firm yet flexible
materials, such as steel and wood, that bend without breaking. Later, people 6.______
tried to lift a building of its foundation, and insert rubber and steel between 7.______
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; the structures, so called smart buildings, respond like living 8.______
organisms to an earthquake’s vibrations. When ground shakes and the
building tips forward, the computer would force the building to shift in
the direction. The new designs should offer even greater security to cities 9.______
where earthquakes often take place.
    The new smart structures could be very expensive to build, although they 10.______
would save many lives and would be less likely to be damaged during earthquakes.  
选项
答案might——could
解析 本题为情态动词误用。might have done是对已发生的事情做推测，还不知道事情结果。但是根据上下文可知地震后果，而且科学家认为这是“好消息”，也就是本来会更糟，但现在没那么糟糕。
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