题目内容
（请给出正确答案）
A major earthquake striking San Francisco someday is inevitable．
A．Right
B．Wrong
C．Not mentioned
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更多“A major earthquake striking Sa…”相关的问题
The second paragraph implies that
A．the world's earthquake laboratories were not effective in detecting seismic "pre-shocks".
B．seismic signaling was the major communication form. of many animal species.
C．those animal species can feel and understand all kinds of vibrations.
D．all strange animal behaviors can be explained by extra-sensory perception.
回答{TSE}题：
{TS}The second paragraph implies that
A. the world’s earthquake laboratories Were not effective in detecting seismic“pie-shocks”．
B. seismic signaling Was the major communication form. of many animal species．
C. those animal species can feel and understand all kinds of vibrations．
D. all strange animal bellaviors Can be explained by extra-sensory perception．
Earthquake
1 Every year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various parts of the world. Most of these damaging earthquakes occur either in a narrow belt which surrounds the Pacific Ocean or in a line which extends from Burma to the Alps in Europe. Some of the destruction is directly caused by the quake itself. An example of this is the collapse of buildings as a result of the quake itself. Other damage results from landslides or major fires which are initiated by the quake.
2 There are about a million quakes a year. Fortunately, however, not all of them are destructive. The intensity of an earthquake is measured on the Richter Scale, which goes from 0 upward. The highest scale recorded to date is 8.9. Major damage generally occurs from quakes ranging upwards from 6.0.
3 The actual cause of the quake itself is the breaking of rocks at or below the earth's surface. This is produced by pressure which scientists believe may be due to a number of reasons, two of which are the expansion and contraction of the earth's crust and continental drift.
4 In order to limit the damage and to prevent some of the suffering resulting from earthquakes, scientists are working on ways to enable accurate prediction. Special instruments are used to help people record, for example, shaking of the earth. Scientists are trying to find methods that will enable them to indicate the exact time, location and size of an earthquake.
5 Certain phenomena have been observed which are believed to be the signs of imminent earthquakes. These include strange behaviours of some animals, the changes in the content of mineral water, etc. The magnetic properties of rocks may also display special pattern before major earthquakes happen.
A Earthquake's Forecast
B Historical Records of Earthquakes
C Intensities of Earthquakes
D Cause of Earthquakes
E Indications of Earthquakes
F Damaging Earthquakes
Paragraph 2 ______ .
Earthquake
1．Every year earthquakes are responsible for a large number of deaths and a vest amount of destruction in various parts of the world．Most of these damaging earthquakes occur either in a narrow belt which surrounds the Pacific Ocean or in a line which extends from Burma to the Alps in Europe．Some of the destruction is directly caused by the quakes itself．An example of this is the collapse of buildings as a result of the quake itself,0ther damages result from landslides or major fires which are initiated by the quake．
2．There are about a million quakes a year．Fortunately，however，not all of them are destructive．The intensity of an earthquake is measured on the Richter Scale，which goes from zero upwarD．The highest scale recorded to date is 8. 9. Major damage generally occurs from quakes ranging upwards from 6.0.
3. The actual cause of the quake itself is the breaking of rocks at or below the earth' s surface. This is produced by pressure which scientists believe may be due to a number of reasons, two of which are the expansion and contraction of the earth's crust and continental drift.
4. In order to limit the damage and to prevent some of the suffering resulting from earthquakes, scientists are working on ways to enable accurate prediction. Special instruments are used to help people record, for example, shaking of the earth. Scientists are trying to find methods that will enable them to indicate the exact time, location and size of an earthquake.
5. Certain phenomena have been observed which are believed to be signs of imminent earthquakes. These include strange behaviors of some animals, the changes in the content of mineral water, etC． The magnetic properties of rocks may also display special, pattern before major earthquakes happen.
第 23 题 Paragraph 2_________
A．Earthquake forecast
B．Historical records of earthquakes
C．Intensities of earthquakes
D．Cause of earthquakes
E．Indications of earthquakes
F．Damaging earthquakes
A Great Quake Coming？
Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area-and they can be devastating．In 1906，for example，a major quake destroyed about 28,000 buildings and killed hundreds，perhaps thousands of people．Residents now wonder when the next“Big One”will strike．It's bound to happen someday．At least seven active fault(断层)lines run through the San Francisco area． Faults are places where pieces of Earth's crust(地壳)slide past each other．When these pieces slip，the ground shakes．
To prepare for that day，scientists are using new techniques to reanalyze the 1906 earthquake and predict how bad the damage might be when the next one happens．
One new finding about the 1906 quake is that the San Andreas Fault split apart faster than scientists had assumed at the time．During small earthquakes，faults rupture(断裂)at about 2.7 kilometers per second．During bigger quakes，however，ruptures can happen at rates faster than 3.5 kilometers per second．
At such high speeds，massive amounts of pressure build up，generating underground waves that can cause more damage than the quake itself．Lucky for San Francisco，these pressure pulses(脉冲)traveled away from the city during the 1906 event．As bad as the damage was，it could have been far worse．
Looking ahead，scientists are trying to predict when the next major quake will occur．Records show that earthquakes were common before 1906．Since then，the area has been relatively quiet．Patterns in the data，however，suggest that the probability of a major earthquake striking the Bay Area before 2032 is at least 62 percent．
New buildings in San Francisco are quite safe in case of future quakes．Still，more than 84 percent of the city's buildings are old and weak．Analyses suggest that another massive earthquake would cause extensive damage．
People who live there today tend to feel safe because San Francisco has remained pretty quiet for a while．According to the new research，however，it's not a matter of“if”the Big One will hit．It's just a matter of when．
The San Francisco area is located above several active fault lines．
A．Right
B．Wrong
C．Not mentioned
Earthquake
Every year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various parts of the world. Most of these damaging earthquakes occur either in a narrow belt which surrounds the Pacific Ocean or in a line which extends from Burma to the Alps in Europe. Some of the destruction is directly caused by the quake itself. An example of this is the collapse of buildings as a result of the quake itself. Other damage results from landslides or major fires which are initiated by the quake.
These are about a million quakes a year. Fortunately, however, not all of them are destructive. The intensity of an earthquake is measured on the Richter Scale, which goes from 0 upward. The highest scale recorded to date is 8.9, major damage generally occurs from quakes ranging upward from 6.0.
The actual cause of the quake itself is the breaking of rocks at or below the earth's surface. This is produced by pressure which scientists believe may be due to a number of reasons, two of which are the expansion and contraction of the earth's crust and continental drift.
In order to limit the damage and to prevent some of the suffering resulting from earthquakes, scientists are working on ways to enable accurate prediction. Special instruments are used to help people record, for example, shaking of the earth. Scientists are trying to find methods that will enable them to indicate the exact time, location and size of an earthquake.
Certain phenomena have been observed which are believed to be the signs of imminent earthquakes. These include strange behaviors of some animals, the changes in the content of mineral water, etc. The magnetic properties of rocks may also display special pattern before earthquakes happen.
A. Earthquakes forecast
B. Historical records of earthquakes
C. Intensities of earthquakes D. Cause of earthquakes
E. Indications of earthquakes
F. Damaging earthquakes
paragraph 2______.
A.destroyed
B.that destroyed
C.which destroyed
D.it was destroyed
After an earthquake in Los Angeles, young people______.
A．get nervous because of aftershocks
B．have training with famous police
C．take care of people with major injuries
D．prepare supplies for people in the disaster
A．concerned
B．concerning
C．is concerning
D．being concerned
The major hazard represented by seismic events along the great earthquake belts of the world has now been clearly recognized, and a great deal of research money and effort is being directed toward earthquake prediction and possible control. Active fault systems, such as the San Andreas fault in California, are carefully monitored for observable changes that could indicate an impending earthquake. Although the nature of earthquakes and earthquake belts are rela tively well understood, the possibility of accurately predicting major earthquakes, much less controlling them, still appears remote.
Probably the most intriguing development in this field relates to the Rocky Mountain Arsenal earthquakes near Denver, Colorado. In 1962 injection of fluid wastes into the Precambrian basement rocks nearly 4000m below the ground surface was followed by a series of small earthquakes. Studies of this phenomenon have indicated that the injected fluid lubricated a fault zone under stress and thereby promoted release of seismic energy. Experimentation at the site is still going on, but the connection between the fluid injection and earthquake activity was quickly rea lized. Accordingly, the suggestion has been made that potentially destructive earthquakes could be converted into numerous nondestructive minor earthquakes by using fluid injection techniques. Thus, although man has no hope whatever of controlling the major earth movements that lead to earthquakes, he may in some cases be able to influence the manner in which earthquake energy is dissipated.
Which of the following can be the best title for the passage？
A．Awareness of Earthquake Hazards
B．Earthquake Is a Dangerous Thing
C．Earthquake Prediction and Control
D．The Probability of Earthquake Activity for Various Areas in the United States
