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
2025-03-21
2
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 (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 am. 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) f°r 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 (振动,摆动). 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 has been made in the construction of buildings and highways
答案
D
解析
本题是一道具体细节题。问洛杉矶地震造成的损失和伤亡比较小的一个原因是什么。利用查阅式阅读法,根据文章第三段内容,地震发生在休假日的凌晨,公路上车辆不多;由于建筑规程的修改,近20年来洛杉矶城市楼房和公路建筑都加固了,防震性能提高了。所以,本题的正确答案应是D“原因之一是楼房和公路建筑的防震性有了很大的提高”。
转载请注明原文地址:https://tihaiku.com/zcyy/4007286.html
相关试题推荐
Rescueteamsfromallovertheworldontheearthquake-strickenareaafterthen
Man:IcalltoaskforsomeinformationaboutthecostoftriptoLosAngeles.
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
Therearetwogreatbeltsor______whereninetypercentofallearthquakestake
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
随机试题
Qualityis______countsmost.A、whichB、thatC、whatD、whereC表语从句题。句中is后为表语从句,该从
2010年年底,全国高速公路里程为7.41万公里,居世界第二位,比“十一五”规划
下列哪种成分不会引起肾淀粉样变A.免疫球蛋白轻链 B.免疫球蛋白重链 C.β
艾滋病的传染源包括:()A、艾滋病病毒感染者或病人的血液 B、艾滋病病毒
共用题干 GoingonaDietAtypicalpersonne
144、脉动磁通势在空间按()规律分布。(A)正弦;(B)余弦;(C)梯形
物业经营管理市场分析,对于物业服务企业的作用是()。A:了解不同物业类型的市场供
蒙田说:“初学者的无知在于未学,而学者的无知在于学后。”意思是说,第一种无知是连
当事人的下列诉讼行为中符合处分原则的有:() a.张某准备将损害其住所的社
下列关于车辆购置税计税依据的说法不正确的是()。A.自产自用车辆的计税价格按纳
最新回复
(
0
)