首页
登录
职称英语
[originaltext] Earthquakes are violent, destructive—and unpredictable! The o
[originaltext] Earthquakes are violent, destructive—and unpredictable! The o
游客
2023-12-23
55
管理
问题
Earthquakes are violent, destructive—and unpredictable! The overall history of earthquakes leads to one general rule: The more time that has passed since an earthquake, the bigger the chance one will strike. Scientists therefore use information about past earthquakes to guess probabilities about future earthquakes. For example, they say that within the next 30 years, there is a 60-percent probability that an earthquake will hit somewhere in southern California. But exactly where or when is a mystery.
In at least one case, an earthquake in northern China has been predicted by paying attention to clues from nature. In China earthquakes have been studied for nearly 4,000 years, and there are records of more than 9,000 earthquakes going back to the year 1831 B. C. The official earthquake records of the state of California only go back to 1930!
In their long, hard look at earthquakes, the Chinese have observed many things. Before an earthquake, animals start to act strangely, the ground changes shape, and Earth’s magnetic field gets stronger in the earthquake area. The water in wells bubbles up and then returns to its normal level. Also, a series of small earthquakes can mean that a big quake is on its way.
The Chinese used these clues in 1974 to make the first successful prediction of an earthquake. The United States Geological Survey, on the other hand, has never predicted a major earthquake.
Question No. 23 What is the general rule about the occurrence of an earthquake?
Question No. 24 According to the speaker, which area is likely to be hit by an earthquake within the next 30 years?
Question No. 25 How long have the Chinese studied earthquakes?
Question No. 26 Which of the following is NOT a clue that is used by the Chinese to predict an earthquake?
选项
A、Southwestern China.
B、Northern China.
C、Northern California.
D、Southern California.
答案
D
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3297587.html
相关试题推荐
[originaltext]Manypeoplebelievethatthenewsisbiasedinfavorofonep
[originaltext]Worldoildemandisslowingdown,ledbyweakereconomicgrow
[originaltext]Worldoildemandisslowingdown,ledbyweakereconomicgrow
[originaltext]Worldoildemandisslowingdown,ledbyweakereconomicgrow
[originaltext]SouthKoreahasconfirmeditwillmoveitsfutureseatofgov
[originaltext]SouthKoreahasconfirmeditwillmoveitsfutureseatofgov
[originaltext]SouthKoreahasconfirmeditwillmoveitsfutureseatofgov
[originaltext]ISTANBUL,Turkey—Near-simultaneousexplosionshittwoIstanbu
[originaltext]ISTANBUL,Turkey—Near-simultaneousexplosionshittwoIstanbu
[originaltext]OneofthemostpopularmythsabouttheUnitedStatesinthe
随机试题
Whenthebrawlhappened,[br][originaltext]Amanhasbeenbludgeonedtode
WhereistheSerenaHotellocated?[originaltext]AfghanInteriorMinistryspokes
我国最早自编的《教育心理学》于1924年出版,该书的作者是()A.房宗岳 B
Text1Theyarefallinglikedominoes.Ex
下述关于直接工程费的组成正确的说法是()。A.直接工程费由人工费、材料费和施
以下关于面向对象设计的叙述中,错误的是( )。A.高层模块不应该依赖于底层模块
能治疗咽喉肿痛的是()。A.射干秦皮B.桑叶菊花C.山豆根射干D.地骨皮
和许多的生命现象一样,免疫系统也有两面性,它不但能排除外来因素的侵袭,又能因免疫
甲为了能在自己房中欣赏远处风景,便与相邻的乙约定:乙不在自己的土地上建造高层建筑
根据《工程建设项目施工招标投标办法》(国家八部委局第30号令),工程建设项目施工
最新回复
(
0
)