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
2013-01-20
28
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.
The smart buildings discussed in the passage ______.
选项
A、would cause serious financial problems
B、would be worthwhile though costly
C、would increase the complexity of architectural design
D、can reduce the ground vibrations caused by earthquakes
答案
B
解析
依据是文章最后一段。
转载请注明原文地址:https://kaotiyun.com/show/Vl2O777K
0
考博英语
相关试题推荐
______enoughtimeandmoney,theresearcherswouldhavebeenabletodiscovermoreinthisfield.
Competitorsfrommorethanahundredcountrieshave____inLosAngelesfortheOlympicGames.
Parentsofwailing(哀号)babies,takecomfort;Youarenotalone.Chimpanzeebabiesfuss.Seagullchickssquawk.Buryingbeetle
(51)Beingangryincreasestheriskofinjury,especiallyamongmen,newresearchsays.Theresearchersgathereddataonmor
Awayfromtheirprofession,scientistsareinherentlynomorehonestorethicalthanotherpeople.Butintheirprofessiontheyw
Perhapsmostimportant,thereportcould______morelight,thoughitdoesgivesome,onhowchildwelfareischangingovertime.
Several______forglobalwarminghavebeensuggestedbyclimateresearchers.
Itisrequiredthatduringtheprocessgreatcarehastobetakentoprotectthe______silkfromdamage.
Beforethedisastrousearthquaketherewas______chaos.
随机试题
人们之所以重视道德,是因为人具有________。
建设中国特色社会主义需要一个稳定的国内环境,也需要一个和平的国际环境。制定和实施正确的国际战略和外交政策,对于争取和平的国际环境极为重要。我国对外交往活动的根本准则是()
Youngpeoplearenot______tostandandlookatworksofart;theywantarttheycanparticipatein.
27岁初孕妇,于妊娠20周为预测妊娠期高血压疾病的发生进行预测性诊断,最有预测价值的方法是
《母婴保健法》规定的孕产期保健服务不包括
依据现行《公路技术状况评定标准》,路基损坏包括()。
根据《环境影响评价技术导则—声环境》,在环境噪声评价量中,“LWECPN符号表示()。
某双代号网络计划如下图所示,其关键线路有()条。
在《追寻文明的足迹》这堂课中,李老师让学生自由选择并组成绘画、雕塑、建筑三个不同的研究小组。这体现了新课标理念中对学生()的激发。
(1)FredericChopinwasborninZelazowaWola,Poland,onFebruary22,1810,toaFrenchfatherandPolishmother.Hisfather,Ni
最新回复
(
0
)