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
2025-05-02
34
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] People began to add rubber and steel between the buildings and its base so as to____.
选项
A、Make the building flexible
B、Make the building firm
C、To decrease the effects of the vibration
D、To avoid the earthquake
答案
C
解析
句中只有C最合适,D选项过于宽泛,其它选项过于狭窄。
转载请注明原文地址:https://tihaiku.com/zcyy/4058544.html
相关试题推荐
Theearthquake_____nothavecomeataworsetimeforthewar-torncountry.A、coul
Beforethedisastrousearthquaketherewas______chaos.A、massiveB、ominousC、susp
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydam
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
AftertheviolentearthquakethatshookLosAngelesin1994,earthquakescie
随机试题
Howdidthemanfeelabouttheweatherattheendofconversation?A、Afraid.B、Sa
Inbringing【C1】______children,everyparentwatcheseagerlythechild’sac
[originaltext]W:Thisweek’sprogramUpYourStreettakesyoutoHarrogate,as
Accidentsarecaused;theydon’tjusthappen.Thereasonmaybeeasytosee:
Oneofthemostinterestingofallstudiesisthestudyofwordsandwordor
公务员甲颇有才情,以本县三个招致群众非议的公共工程为背景,即兴创作一阕《沁园春无
商业银行经营证券投资业务的目标有( )。A.保持流动性,获得收益 B.分散风
微分方程y″-4y=4的通解是()。(c1,c2为任意常数)A. B.
描述施工放样工作正确的是( )。A.根据工程建筑物的设计尺寸 B.建筑物特征
根据《中华人民共和国建筑法》,负责建筑安全生产的监督管理,并依法接受劳动行政主管
最新回复
(
0
)