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
29
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://kaotiyun.com/show/Czkd777K
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
Speakingtwolanguagesratherthanjustonehasobviouspracticalbenefits.Inrecentyears,scientistshavebeguntoshowthat
PoliceinthepopularresortcityVirginiaBeachrecentlybeganoperatingvideosurveillancecameraswithcontroversialfacerec
TipstoHelpNewGradsLandJobOffersInordertogetajoboutofcollegethesedays,newgradsshouldbeoverachieverswi
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanc
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanc
"HIthere.How’sitgoing7""Oh,fine.Fine.Howaboutthisweather,huh?""Well,Iguesswecanalwaysusetherain."
Earthquakesmayrightlyberankedasoneofthemostdestructiveforcesknowntoman:sincerecordsbegantobewrittendown,it
Nowanation’spoliticalinfluencedependson______.TheSovietUnionwasnotbeinglistedasathird-worldnationjustbecaus
Dogsaresocialanimalsandwithoutpropertraining,theywillbehavelikewildanimals.Theywillspoilyourhouse,destroyyou
随机试题
微分方程x2y"+xy’+2y=0的阶是().
A、1.5~2.0mmB、0.8~1.2mmC、0.1~0.2mmD、0.5~1.0mmE、0.05~0.08mm一般情况下金属烤瓷全冠的唇面瓷层厚度应是
A.附子理中丸B.济生肾气丸C.都气丸D.左归丸E.右归丸治疗虚劳脾阳虚证,应首选
《传染病防治法》规定应予以隔离治疗的是
企业法人情况是银行选择合作伙伴的重要参考因素,银行在选择合作伙伴时,必须对企业法人代表的()等情况进行了解。
—Hergrandfatherhasalotofmoney.—______Shewouldn’tthinkaboutitevenifitwereoffered.
查询以字母N或O或P开头的字符串,正确的是
Inmanycountries,teenagersunder18yearsoldcandrivecars.Herearisesthequestion:Isitthebestwaytoimproveroadsaf
Amancannotbereallyhappyifwhatheenjoysdoingisignoredbysocietyasofnoimportance.
Beforeinvestingincommonstocks,oneshouldbeawareofboththeiradvantagesanddisadvantages.Oneadvantageistheirhighp
最新回复
(
0
)