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
107
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 author’s main purpose in writing the passage is to ______.
选项
A、compare the consequences of the earthquakes that occurred in the U. S.
B、encourage civil engineers to make more extensive use of computers
C、outline the history of the development of quake-resistant building materials
D、report new developments in constructing quake-resistant buildings
答案
D
解析
A项只涉及文章的一个方面,B、C两项范围大,包含了文中没有涉及的内容。
转载请注明原文地址:https://www.kaotiyun.com/show/kl2O777K
0
考博英语
相关试题推荐
Parentsofwailing(哀号)babies,takecomfort;Youarenotalone.Chimpanzeebabiesfuss.Seagullchickssquawk.Buryingbeetle
Developingapeaceful,understanding,andsupportiverelationshipbetweenparentsandchildrenisnotaneasytask.Failurescana
Aslongasherparentscanremember,13-year-oldKatieHarthasbeentalkingaboutgoingtocollege.Hermother,Tally,afinanc
Forgatheringdataaboutindividualsorgroupsatdifferentdevelopmentallevels,researcherscanusetworelatedresearchdesig
Several______forglobalwarminghavebeensuggestedbyclimateresearchers.
Humanbeingshaveneverbeforehadsuchabadpress.Byallreports,weareunabletogetanythingrightthesedays,andtheres
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydamageandtakemanylives.Theycanbeextremelydange
____Irealizedtheconsequences,Iwouldneverhavecontemplatedgettinginvolved.
随机试题
()以扁腱止于肱骨小结节。
A.产程开始子宫收缩即表现为短而弱,间歇长,产程进展慢B.产程进展到某一阶段,宫缩转弱,产程不再进展C.子宫收缩有正常的极性、对称性及节律性,间歇不规则,持续短、弱而无力D.子宫收缩失去正常的极性、对称性及节律性,间歇时子宫不放松E.子宫收缩节律正
消化性溃疡的中医病机根本为
三平面x+y+z-6=0,2x-y+z-3=0,x+2y-z-2=0交点到平面6x+3y+2z-20=0的距离为( )。
监理单位应公正、()、自主地开展监理工作。
下面有关设计概算的说法错误的是()。
谌大力最近到一家网络游戏公司担任总经理。公司2013年销售额1400万元,2014年2400万元,2015年2880万元,2016年预计3000万元。当谌大力看到这些数字时,顿时感到“压力山大”。谌大力遂召集各地经销负责人分析销售形势,会上有些项
在以下旅游者提出的要求中,导游员应该婉言拒绝的要求有()。
论述18世纪初英国的三大评论期刊。
某施工单位与某基层政府签订合同,规定该建筑队承建该政府的办公大楼,后来该施工队没有按照合同规定进行建设,基层政府诉至法院。关于施工单位和基层政府之间的法律关系,下列说法正确的是()
最新回复
(
0
)