人教版（新课程标准） 必修1 Unit 4Earthquakes拓展阅读素材

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人教课标新教材必修1Unit 4拓展阅读
1
Earthquakes around the Pacific
About 400 earthquakes occur worldwide every day, more than a hundred thousand in a year.
China is situated (位于) in one of the most active earthquake regions (区域) in the world and there have been many terrible earthquakes. The most se...