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
专升本
As scientists learn more about the causes of earthquakes, they become better able to predict them. First of all, they know that
As scientists learn more about the causes of earthquakes, they become better able to predict them. First of all, they know that
admin
2015-10-30
29
问题
As scientists learn more about the causes of earthquakes, they become better able to predict them. First of all, they know that quakes are likely to occur in areas where the tectonic plates(地层地壳板块)push against each other.
They study these areas closely, using different instruments. They measure the vibrations of the earth with seismographs(地震仪), which record on rolls of paper all movements, both large and small.
Scientists usually use the Richter scale(里希特震级仪)named after a famous seismologist(地震学家), for these measurements. When an earthquake measures over 4 ~ 5 on the Richter scale, it is strong enough to cause damage. Scientists have determined that an area is not likely to have a large earthquake when many small quakes have been occurring. When the small quakes stop, then pressure builds and a strong quake is more likely.
There are several other ways to predict earthquakes. Scientists can measure the tiny changes in the tilt(倾斜)of the land that happen before earthquakes occur. Increases in the amount of radon(氡), a substance found in deep wells, as well as a higher level of water in the wells, can also mean that an earthquake is likely to occur. In addition, scientists have found that some animals, like dogs, behave strangely before an earthquake, they become nervous and howl(号叫). Seismologists have correctly predicted several earthquakes. In 1975, they said that an earthquake would occur in Liaoning Province, China, one month, and then one hour, before it happened. In 1978, Russian scientists predicted an earthquake in the Altai Mountains six hours before it occurred. However, not all earthquakes are predictable, and a system for predicting is not yet perfected. Nothing on this earth is certain. Although people who live in California and Japan live with the possibility of a serious quake, perhaps the next strong earthquake will occur somewhere outside the "Ring of Fire".
According to the passage, a large earthquake is most likely to occur in an area______.
选项
A、where a series of minor vibrations of the earth have been occurring
B、that is within the "Ring of Fire" but does not see any vibration of the earth
C、where many small vibrations of the earth have been occurring and then a calm period follows
D、where tectonic plates fit into each other properly
答案
C
解析
第一段最后两句话“Scientists havedetermined that...then pressure builds and astrong quake is more likely.”与C选项吻合,故C正确。
转载请注明原文地址:https://kaotiyun.com/show/BAYC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Thestudentwhowantsanewspapercareerhasmuchhardworkaheadofhimbeforehecanbecomeevenacub,orbeginningreporter.
Weareinterestedintheweatherbecauseit【21】ussodirectly—whatwewear,【22】wedo,andevenhowwefeel.Geographers,however
Theword"Okay"isknownandusedbymillionsofpeopleallovertheworld.Still,languageexpertsdonotagreeonwhereitcam
Strange______hisbehaviormaybe,thereisaverygoodreasonforit.
Hewas______enoughtounderstandmyquestionsfromthegesturesImade.
Nooneknowshowmanlearnedtomakewords.Perhapshebeganbymakingsoundslikethosemadebyanimals.Perhapshegruntedlik
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourfutureenergyneeds?Thesearetwoimportantque
Cancellationoftheflight______manypassengerstospendthenightattheairport.
Thedrunkmanwasrunningfromsidetosideinthecrowdandheknockedinto______.
ContrarytoitsrathernegativereputationintheWest,pigsinChinesecultureareasignofkindnessandgenerosity.Pigscare
随机试题
A.死腔量增加B.肺内分流C.弥散功能障碍D.肺泡通气量下降E.氧耗量增加COPD、Ⅱ型呼吸衰竭发生呼吸衰竭最重要的机制是
人们之所以会对同一刺激物产生不同的知觉,是因为人们要经历三种知觉过程,即选择性注意、选择性扭曲及()
A、细胞免疫B、体液免疫C、两者均有D、两者均无γ-干扰素:()
中晚期食管癌的肉眼类型有
患者,男,52岁,高血压心脏病病史10年,1天前因上呼吸道感染在门诊静脉滴注抗生素速度较快,2小时前出现呼吸困难。该患者发现呼吸困难最可能是由于()
类风湿关节炎患者,Ig以下列哪型增高为主
Difficultaspartofthestorywas______,Isucceedincatchingholdofitintheend.
根据国家有关规定,被辞退的公务员不享受失业保险。()
A、教室B、办公室C、银行B
Whatmeasureismentionedinthenews?
最新回复
(
0
)