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2014考研作文话题预测及范文(五)

以下《》由出国留学网考研英语作文频道为您独家提供,欢迎大家参考。 Plate Tectonics and Sea-floor Spreading The theory of plate tectonics describes the motions of thelithosphere, the comparatively rigid outer layer of the Earth thatincludes all the crust and part of the underlying man...

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