托福阅读考试中如何处理难词难句【重点解析】..docx

智课网TOEFL备考资料托福阅读考试中如何处理难词难句【重点解析】 摘要： 备考托福阅读的时候，同学们经常会遇到生词或者长难句子，影响大家做阅读题目。所以我们要掌握长难句分析的技巧和方法，争取可以在托福阅读考试中取得高分。下面小编为同学们介绍托福阅读考试中如何处理难词难句。 托福 阅读考试中如何处理难词难句【重点解析】。备考 托福阅读 的时候，同学们经常会遇到生词或者长难句子，影响大家做阅读题目。所以我们要掌握长难句分析的技巧和方法，争取可以在托福阅读考试中取得高分。下面小编为同学们介绍托福阅读考试中如何处理难词难句。 原文： Geologists have long known that the Earths 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 二、难句 1.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 mid-ocean ridge system， whose source，most geologists contend，is the upper mantle. 对于地幔分层论点来说，最好的证据乃这样一个确认的事实，即在那些海洋岛屿——这些岛屿据信是源于由下层地幔升上来的地幔柱状溶岩流(mantle plume)——上发现的火山岩石，是由与海洋中部山脊系统的物质根本不同的物质构成的，而这一海洋中部山脊系统的成因，大多数地质学家论辩道，为上部地幔。 难句类型：复杂修饰、插入语