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In the 1970s, there was great optimism about earthquake prediction. A few so-called earthquake precursors had come to light, and there was even a theory (known as dilatancy) put forth to explain many of the phenomena that come before a large earthquake. A series of foreshocks is an example of a precursor. However, since foreshocks look just like any other earthquakes, they are not in themselves very useful in prediction. From all points around the globe, there are numerous anecdotal reports about other precursors, earthquake folklore, if you will.
Many widely reported earthquake precursors are related to groundwater. A few hours before a large earthquake, marked changes have been reported in the level or flow of wells and springs. Groundwater has also reportedly changed temperature, become cloudy, or acquired a bad taste. Occasionally, electrostatic phenomena such as earthquake lights (similar to St. Elmo’s fire that appears on ships during electrical storms) and changes in the local magnetic field have been reported. Anecdotal reports also persistently include the strange behavior of animals, which might be linked to electrostatic phenomena or foreshocks. Changes in strain and creep (silent tectonic motion, without accompanying earthquake) along a fault normally locked by friction could also be considered precursors.
In China in the 1970s, it became popular for people to predict earthquakes using “backyard” measurements such as the monitoring of well levels and observation of farm animals. At least one earthquake, the Haicheng quake in 1975, was successfully predicted and a town evacuated, providing that, at least in some cases, earthquake prediction is possible. The Haicheng earthquake had hundreds of foreshocks, making it an easier-than-average earthquake to predict. Groundwater changes and anomalous animal behavior were also reported (for example, hibernating snakes supposedly awoke and froze to death). In China, “evacuation” meant that compulsory outdoor movies were shown, so that when the quake did happen and the town was severely damaged, no one was killed. But Chinese seismologists missed predicting catastrophic Tangshan earthquake, in which at least 250,000 reportedly perished.
36. Which of the following is the best title for this passage?
37. The passage indicates that foreshocks are “not ... very useful” in predicting earthquake because they ______.
38. Which of the following could be considered a logical inconsistency in the passage?
39. The passage suggests that the Tangshan earthquake ______.
40. In Paragraph 3, the word “evacuation” is placed in quotations in order to ______.

问题1选项
A.The Effects of Earthquake on Groundwater.
B.The Search for Earthquake Precursors.
C.A Novel Theory of the Origin of Earthquakes.
D.A History of Chinese Earthquakes.
问题2选项
A.are exceptionally difficult to predict
B.are not part of the theory of dilatancy
C.interfere with electrostatic phenomena
D.are impossible to distinguish from earthquake themselves
问题3选项
A.The passage states that foreshocks are not useful predictors of earthquakes but then cites foreshocks as instrumental to predicting an earthquake.
B.The passage states that the Chinese are interested in predicting earthquakes but then says that they were devastated by the Tangshan earthquake.
C.The passage reports that animals behaved strangely before an earthquake but then attributes this behavior to electrostatic phenomena.
D.The passage suggests that both strain and creep could be considered earthquake precursors.
问题4选项
A.was caused by strain and creep
B.was preceded by several foreshocks
C.caused more damage than the Haicheng earthquake did
D.was anticipated by the theory of dilatancy
问题5选项
A.imply that an action was ineffective
B.emphasize the primitiveness of Chinese scientific methods
C.suggest that a certain practice was unconventional
D.underscore that an action was intended, but not implemented
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