首页
登录
职称英语
[originaltext] Now, you’ve been reading articles about the tremendous damage d
[originaltext] Now, you’ve been reading articles about the tremendous damage d
游客
2024-01-21
63
管理
问题
Now, you’ve been reading articles about the tremendous damage done to life and property by earthquakes. That’s why seismologists (地震学家) have been working so hard to develop methods of earthquake prediction. (16) We can now predict earthquake fairly well, but the predictions only locate potential areas of danger. They don’t predict the specific time and location at which an earthquake is likely to occur. Today I want to introduce to you three prediction models that have been developed. The first prediction model looks along earthquake faults (地震断裂带), those cracks in the earth’s crust, (17) to find places where the fault has shown little or no earthquake activity for a long time. This theory hypothesizes that such places are due for a major shock. (18) The second model relies on phenomena—like ground tilt. Using long tubes containing water, observers noted that ground tilt tended to occur before major earthquakes. That led them to correctly predict the big Haicheng quake of 1975—the first successful earthquake prediction scientists have ever made. A million people were evacuated from that Chinese city before the earthquake struck. Unfortunately, this method hasn’t worked consistently, so we can’t say it’s been perfected. (19) The third model is based on the theory that major earthquakes closely follow a series of minor ones. Starting with the measurements and timing of the smaller quakes—a complex formula calculates the "times of increased probability" for much larger quakes. Right now, this method, like the first method, cannot predict specific times and places, but that may change as it is further developed. For the moment, none of these models can predict with reasonable levels of confidence.
16. What does the speaker say about the earthquake prediction?
17. What places are more likely to have a major earthquake?
18. Which prediction model helped scientists predict the big Haicheng quake of 1975?
19. What is the third prediction model based on?
选项
A、The degree of the ground tilt.
B、The magnetic phenomena.
C、The cracks in the earth’s outer layer.
D、The connections between major earthquakes and minor ones.
答案
D
解析
第三种预测模型是基于一个理论,这个理论就是大地震总是紧密地跟随在一些小地震之后。
转载请注明原文地址:http://tihaiku.com/zcyy/3380906.html
相关试题推荐
[originaltext](5)AnewstudyfindsthatheavyInternetusemaybeconnecte
[originaltext](5)AnewstudyfindsthatheavyInternetusemaybeconnecte
[originaltext]IfanewideainAmericabecomesalaw,peoplewhosufferfro
[originaltext]TheItalianaidgroupEmergencyhashadatenserelationship
[originaltext]Ifyoucontactthecustomerservicedepartmentofagovernmen
[originaltext]Ifyoucontactthecustomerservicedepartmentofagovernmen
[originaltext](5)Eatingprocessedmeatcancausecancer,WorldHealthOrga
[originaltext](5)Eatingprocessedmeatcancausecancer,WorldHealthOrga
[originaltext]DozensofChildrenataUtahelementaryschoolhadtheirlunc
[originaltext]IvoryCoasthasopeneditsfirstlarge-scalechocolatefactory.P
随机试题
Readcarefullythefollowingexcerptonthedevelopmentofrobots,andthenw
LessNews,MuchBetterA)Inthepastfewdecades,thefortu
Beingbroughtupinaninstitutionorbyneglectfulparents,apregnancy,early
作为荧光标记的荧光素必须具备的条件中,与提高观察效果有关的是A:活性基团能与蛋白
进行1∶1000成图的航摄规划设计时,采用的DEM比例尺宜为( )。A.1∶5
影响营销组织模式的因素包括()等。A:企业规模 B:市场 C:房地产种类
2017年第一季度,某省农林牧渔业增加值361.78亿元,比上年同期增长5.9%
关于勘察、设计合同的生效,下列说法正确的是()。A、提交勘察成果资料后10d内,
基坑开挖过程中应监测()。A.边坡的稳定性 B.支护结构的位移和应力
肛裂A.排便可加重肛门疼痛,伴大便带鲜血 B.肛周肿痛伴发热 C.反复发作的
最新回复
(
0
)