A Earthquake’s Forecast B Historical Records of Earthquakes C Intensities of Earthquakes D Cause of Earthquakes E Indicatio

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问题 A  Earthquake’s 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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答案D

解析 本段简述了地震的起因。
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