首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death
After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death
admin
2011-02-28
12
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 ,as 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 new, 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.
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
由第五段的叙述可以推断,关键在于减小地基震动形成的位移。
转载请注明原文地址:https://jikaoti.com/ti/GedsFFFM
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Whatwasthegoodnewsforscientists?
TheconsequenceoftheGulfWarthathascalledtheconcernsofthescientistsis
Payandproductivity,itisgenerallyassumed,shouldberelated.Buttherelationshipseemstoweaken【C1】_________peoplegetol
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanc
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanc
"HIthere.How’sitgoing7""Oh,fine.Fine.Howaboutthisweather,huh?""Well,Iguesswecanalwaysusetherain."
Earthquakesmayrightlyberankedasoneofthemostdestructiveforcesknowntoman:sincerecordsbegantobewrittendown,it
"Thosewithalargesocialcircleareactuallylesssatisfiedwiththeirlivesthanthosewithasmallergroupoffriendswhoar
Whichfactordetermineshumanbeings’psychologicalspaceneeds?
随机试题
患者男性,72岁,反复腹泻2个月,每天大便3~4次,为稀烂便,有少许黏液,偶有血便,无明显里急后重,体重减轻不明显,该病例最可能的诊断是
热病之后,胃阴耗伤所致呃逆者,其特点为( )。
营业部应针对账户管理、资金存取及划转、( )等业务环节存在的风险,制定操作程序和具体控制措施。
改动卫生间、厨房间防水层的,应当按照防水标准制定施工方案,并做()。
《农业法》和《草原法》规定的对农民直接补贴措施包括:对在国务院批准规划范围内实施退耕的农民按照国家规定给予补助;对根据当地人民政府统一规划转产转业的农(渔)民按照国家规定予以补助;对在国务院批准规划范围内实施退耕还草的农牧民按照国家规定给予粮食、现金、草种
在信息社会,政府塑造自身的良好形象,是一种必不可少的能力。这对于提高政府公信力,维护社会稳定与和谐,有着正面意义。树形象、搞宣传不为过。但必须以务实为前提。只有首先关心群众最关心的事,解决好群众急需解决的困难,政府才有与民同乐并为之一“秀”的资本。因此,“
结合自身体会,谈谈对自律的认识。
壳:海龟
在西方法学家关于法的本质学说中,神学论的主要代表人物是()。
Ifwinningiseverything,Britishanthropologistshavesomeadvice:wearred.Theirsurveyoffoursportsatthe2004OlympicGa
最新回复
(
0
)