首页
登录
职称英语
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
2025-04-23
29
管理
问题
After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report;The damage and death toll 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 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] One reason why the loss of lives in the Los Angeles earthquake was comparatively low is that ______.
选项
A、new computers had been installed in the buildings
B、it occurred in the residential areas rather than on the highways
C、large numbers of Los Angeles residents had gone for a holiday
D、improvements had been made in the construction of buildings and highways
答案
D
解析
根据文章第三段第一至二行排除C,依据文章第三段第三行选D。
转载请注明原文地址:https://tihaiku.com/zcyy/4050337.html
相关试题推荐
Theexplosionofastarisanawesomeevent.Themostviolentofthesecatac
Theexplosionofastarisanawesomeevent.Themostviolentofthesecatac
Theexplosionofastarisanawesomeevent.Themostviolentofthesecatac
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Industry______onlytenpercentofthesmoginLosAngeles.A、callsonB、mounts
随机试题
YouwillhearProfessorBonnieMiltonfromPekingUniversitytalkingaboutjobs
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notontheE
A—feedbackJ—dataprocessingB—floppydiskK—datacaptureC—checkdigitL—
[audioFiles]audio_eusm_j57_001(20082)[/audioFiles]A、Atsmallneighborhoodstore
关于电气线路中漏电保护作用的叙述,下列哪一个是正确的?()A.漏电保护主要起
2岁男孩,未接种过麻疹疫苗,今在幼儿园中接触过麻疹患儿,当即给予丙种球蛋白注射。
A.大便稀薄,夹有残渣,泻后痛减 B.便下急迫,便色黄褐,气味秽臭 C.大便
下列哪项是侵蚀性葡萄胎最常见的转移部位A.阴道 B.脑 C.肺 D.肾
COPD的标志性症状是 A.慢性咳嗽B.咳痰C.气短D.喘息
下列检查方法中,不属于发票检查方法的是()。A.盘存法 B.对照审查法
最新回复
(
0
)