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
考研
The U.S. government has recently helped people learn more about the dangers of earthquakes by publishing a map. This map shows t
The U.S. government has recently helped people learn more about the dangers of earthquakes by publishing a map. This map shows t
admin
2010-05-05
46
问题
The U.S. government has recently helped people learn more about the dangers of earthquakes by publishing a map. This map shows the chances of an earthquake in each part of the country. The areas of the map where government is spending a great deal of money and is working hard to help discover the answer to these two questions:
1. Can we predict earthquakes?
2. Can we control earthquakes?
To answer the first question, scientists are looking very closely at the most active fault systems in the country, such as the San Andreas Fault in California. A fault is a break between two sections of the earth’s surface. These breaks between sections are the places where earthquakes occur.
Scientists look at the faults for changes which might show that an earthquake was about to occur. But it will probably be many years before we can predict earthquakes accurately and the control of earthquakes is even farther away.
Nevertheless, there have been some interesting developments in the field of controlling earthquakes. The most interesting development concerns the Rocky Mountain Arsenal earthquakes. Here water was pat into a layer of rocks 4,000 metres below the surface of the ground. Shortly after this injection of water, there was a small number of earthquakes. Scientists have decided that the water which was injected into the rocks worked like oil on each other. When the water" oiled" the fault, the fault became slippery and the energy of an earthquake was released.
Scientists are still experimenting at the site of these earthquakes. They have realized that there is a connection between the injection of the water and the earthquake activity. They have suggested that it might be possible to use this knowledge to prevent very big, destructive earthquakes, that is, scientists could inject some kind of fluid like water into faults and change one big earthquake into a number of small, harmless earthquakes.
选项
A、maps that show where earthquakes are likely to occur
B、zones with a high probability of earthquakes
C、breaks between two sections of the earth’s surface
D、the two layers of earth along a fault
答案
B
解析
常识题。解答本题我们显然可以通过所知的地理知识就可判断。
转载请注明原文地址:https://kaotiyun.com/show/TW44777K
0
考研英语一
相关试题推荐
Yourcameraissnatched.Willyoueverseeita-gain?Probablynot.Butitmaysendpostcardsfromitsnewowner.The【C1】_______
AnyAmericanwhohasboughtapackofcigarettessincethemid-60smighthaveseenthehealthwarnings.Itsays,"SURGEONGENERA
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
Britain’sprivateschoolsareoneofitsmostsuccessfulexports.Thechildrenofthewealthy【C1】________tothem,whetherfromC
Itwouldbeinterestingtodiscoverhowmanyyoungpeoplegotouniversitywithoutanyclearideaofwhattheyaregoingtodoa
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】________theboxystereosysteminthec
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】________theboxystereosysteminthec
Runningmaybethesinglemosteffectiveexercisetoincreaselifeexpectancy,accordingtoanewreviewandanalysisofpastre
Shortstoriesareduearevival.Inrecentyears,therehavebeencritically【C1】________collectionsbyAmericanwriterssuchas
随机试题
简述抗日战争胜利后的国际格局。
急性消化道失液的病人,医嘱静脉给予下列液体输注,作为其责任护士,你考虑首先给其输入
关于松果体的描述,错误的是
适用于检测病毒蛋白的方法是
A、分子内氢键B、N为酰胺型C、氮原子杂化方式不同D、诱导效应E、空间效应东莨菪碱比莨菪碱碱性弱的原因是
下列对于影响气雾剂吸收的因素,正确的为()。
患者,男性,49岁,患风湿性心脏病二尖瓣狭窄,与此病发病有密切关系的细菌是
总分类账户发生额及余额试算平衡表中的平衡公式有( )。
消费者可以通过下列途径解决自己与某超市的争议。()
保教人员给幼儿皮肤擦药要注意药物浓度和剂量,这是因为幼儿皮肤()
最新回复
(
0
)