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What is the talk mainly about?
What is the talk mainly about?
admin
2014-05-14
47
问题
What is the talk mainly about?
Earthquake is a shaking of the ground caused by the sudden breaking and shifting of large sections of the earth’s rocky outer shell. Earthquakes are among the most powerful events on earth, and their results can be terrifying. A severe earthquake may release energy 10,000 times as great as that of the first atomic bomb. Rock movements during an earthquake can make rivers change their courses. Earthquakes can trigger landslides that cause great damage and loss of life. Large earthquakes beneath the ocean can create a series of huge, destructive waves that flood coasts for many miles.
Earthquakes almost never kill people directly. Instead, many deaths and injuries in earthquakes result from falling objects and the collapse of buildings, bridges, and other structures. Fire resulting from broken as or power lines is another major danger during an earthquake. Spills of dangerous chemicals are also a concern during an earthquake.
The force of an earthquake depends on how much rock breaks and how far it shifts. Powerful earthquakes can shake firm ground violently for great distances. During minor earthquakes, the vibration may be no greater than the vibration caused by a passing truck.
On average, a powerful earthquake occurs less than once every two years. At least 40 moderate earthquakes cause damage somewhere in the world each year. About 40,000 to 50,000 small earthquakes--large enough to be felt but not damaging--occur annually.
选项
A、Earthquakes and their effects.
B、How earthquakes take place.
C、The classification of earthquakes.
D、The damaging results of earthquakes.
答案
A
解析
本题可根据录音的主要内容归纳出来。录音首先讲了什么是地震,接下来对地震的影响作了介绍,所以,答案为A。
转载请注明原文地址:https://kaotiyun.com/show/zETK777K
0
专业英语四级
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