Every year earthquakes are responsible f..-阿摩線上測驗
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4F 相信自己一定可以(地特四等 國三下 (2016/09/10)
找了好久終於找到最後一段 The actual cause of the quake itself is the rupturing or 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. |