Earthquake
y year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various parts of the 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 of the destruction is directly caused by the quake example of this is the collapse of buildings as a result of the quake r damage results from landslides or major fires which are initiated by the quake.
e are about a million quakes a unately,however,not all of them are intensity of an earthquake is measured on the Richter Scale,which goes from 0 highest scale recorded to date is r damage generally occurs from quakes ranging upwards from 6.0.
actual cause of the quake itself is the breaking of rocks at or below the earth's 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.
order to limit the damage and to prevent some of the suffering resulting from earthquakes,scientists are working on ways to enable accurate ial instruments are used to help people record,for example,shaking of the ntists are trying to find methods that will enable them to indicate the exact time,location and size of an earthquake.
ain phenomena have been observed which are believed to be the signs of imminent e include strange behaviors of some animals,the changes in the content of mineral water, magnetic properties of rocks may also display special pattern before major earthquakes happen.
graph 2 __________
graph 3 __________
graph 4 __________
graph 5 __________
hquake's Forecast
orical Records of Earthquakes
nsities o{Earthquakes
e of Earthquakes
cations of Earthquakes
ging Earthquakes
all damage during an earthquake is caused __________.
all earthquakes are strong enough __________.
ntists have been working hard to warn people __________.
hquakes can be predicted by observing __________.
the quake itself
be prevented
cause damage of property and loss of lives
a possible earthquake
unusual behaviors of some animals
strong behaviors of human beings
參考答案：
23.C 本段簡述在里氏震級表上反映出來的不同震級。
24.D 本段簡述了地震的起因。
26.E 本段介紹了震前可能會出現的.一些異常情況。
27.A 句中的被動語態…is caused提示可能會跟一個by短語。
28.C 形容詞加上enough後面常會跟一個動詞不定式，文中第二段也講到有些地震震級不高，不會造成重大破壞和傷亡。
29.D 動詞warn後面跟against，或跟of，警告別人將有事情發生。
30.E 動詞observin9後面應該有一個賓語，故應選一個名詞短語。人類的行為變化跟地震並沒有關係，因此F不是正確的選擇。
