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. 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 upward. The highest scale recorded to date is 8.9. major damage
generally occurs from quakes ranging upward 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 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
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Paragraph 2 ______
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Paragraph 3 ______
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Paragraph 4 ______
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Paragraph 5 ______
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Not all damage during an earthquake is caused by ______.
A. the quake itself
B. accurate prediction
C. damage of property and loss of lives
D. a possible earthquake
E. the unusual behaviors of some animals
F. the strong behaviors of human beings
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Not all earthquakes are strong enough to cause ______.
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Scientists have been working hard to warn people of ______.
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Earthquakes can be predicted by observing ______.