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
2015-01-31
71
问题
After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll(死亡人数)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(蓝图)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
主旨题。纵观短文可看出作者是通过描述发生在洛杉矶的地震来指出抗震技术的提高。选项A是说地震结果的比较,不是文章重点,选项B、C与原文表述不符,故选项D正确。
转载请注明原文地址:https://kaotiyun.com/show/n3q7777K
0
大学英语四级
相关试题推荐
TheArtofPublicSpeakingIfyouweretotape-recordoneofDavidLetterman’scomedyroutines,memorizeitwordforword,a
"Thetoyindustryhasalwaysreflectedadultculture,"saysChrisByrne,anAmericantoy-industryconsultant.Inthe1920sgirls
Thebenefitsofquittingsmoking—reducedriskofcancerandmanyotherhealthproblems—areknown.Butformillionsofsmokers,t
A、Gototheluggageoffice.B、Gotothenearestpolicestation.C、Reportittotheofficialsofthestation.D、GototheLostPr
HappinessandSadnessHappinessandsadnessaretwomostbasicandfamiliarfeelingsforhumanbeings.Recently,peoplehave
HappinessandSadnessHappinessandsadnessaretwomostbasicandfamiliarfeelingsforhumanbeings.Recently,peoplehave
Farewell,Libraries?Amazon.com’srecentannouncementthatsalesofe-booksattheonlinemegastorehadovertakensalesofh
Forthispart,youareallowedSOminutestowriteashortessayentitledShouldPrimarySchoolsOfferaForeignLanguageCourse
Byimposingstrictrulesaboutalcohol,parentscanreducetheirkids’impulsestodrink,accordingtoanewstudy.【C1】_____
Accordingtothereport,about60%oftrafficjamsinthiscity______(是由行车不慎造成的).
随机试题
甲公司拥有3幢房产,分别为A厂房、B仓库和C办公大楼,其中C办公大楼为甲公司和乙公司按份共有,甲公司占70%的份额,乙公司占30%份额。2015年发生了下列事项:(1)1月1日,甲公司与丙银行签订了流动资金周转借款合同,期限为1年,设定最高限额为500万
联系实际论述艺术创作的基本过程及每个环节的特征。
氯丙嗪阻断α受体而引起直立性低血压。
A.博来霉素B.多柔比星C.长春新碱D.环磷酰胺E.顺铂具有比较严重的神经毒性的是
下列除哪项外,均属脾肾阳虚经行浮肿的主证
河南境内黄河主要支流有()
关于教学与发展的关系,维果茨基的基本观点是()。
网络系统中,通常把()置于DMZ区。
Thereareseveraldifferentmethodsthatcanbeusedtocreateaforecast.Themethodaforecasterchoosesdependsupontheexpe
Theschoollibraryboughtanewbatchofbooksandmagazinesthismonth.Afterthelibrariansortedthemout,eachbookandmaga
最新回复
(
0
)