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托福阅读中语言要素问题

2015-08-06 17:31:32来源:网络

  本文为大家解析托福阅读中的绊脚石:那些难解的语言要素。新东方在线SAT频道为大家带来托福阅读中语言要素问题,希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

  提炼一个文章的哪些“语言要素”除了有助于我们在阅读中游刃有余,也有助于托福(课程)写作能力的提高。

  托福阅读例子原文:

  Geologists have long known that the Earth's mantle is heterogeneous, but its spatial arrangement remains unresolved—is the mantle essentially layered or irregularly heterogeneous? The best evidence for the layered-mantle thesis is the well-established fact that volcanic rocks found on oceanic islands, islands believed to result from mantle plumes arising from the lower mantle,are composed of material fundamentally different from that of the midocean ridge system, whose source, most geologists contend, is the upper mantle.Some geologists, however, on the basis of observations concerning mantle xenoliths, argue that the mantle is not layered, but that heterogeneity is created by fluids rich in "incompatible elements" (elements tending toward liquid rather than solid state) percolating upward and transforming portions of the upper mantle irregularly, according to the vagaries of the fluids' pathways. We believe, perhaps unimaginatively, that this debate can be resolved through further study, and that the underexplored midocean ridge system is the key.

  一、难词

  spatial: a.1.空间的,太空的;2.存在(或者发生)于宇宙空间的

  plume: n.1.羽状物2.柱,地柱

  xenolith:俘虏岩

  percolate:v.1.渗透2.扩散到,弥漫于

  portions: n.一部分

本文关键字: 托福阅读 托福阅读训练

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