文档介绍：我的文库_个人文库_百度文库沃尔得编辑点评:你想在托福考试各项测试中胜人一筹吗?利用托福阅读备考,收获的不仅仅是阅读好分数哦。托福阅读的备考过程中,我们除了应试技巧,还能学到什么呢?一篇托福阅读文章,哪些方面是我们值得分析的呢?本文中,沃尔得英语以一篇阅读文章为例,提取它的难词,难句,复杂的文章结构,说明我们应该从阅读文章中获得些什么资源。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,也有助于托福写作能力的提高。原文:GeologistshavelongknownthattheEarth'smantleisheterogeneous,butitsspatialarrangementremainsunresolved—isthemantleessentiallylayeredorirregularlyheterogeneous?Thebestevidenceforthelayered-mantlethesisisthewell-establishedfactthatvolcanicrocksfoundonoceanicislands,islandsbelievedtoresultfrommantleplumesarisingfromthelowermantle,posedofmaterialfundamentallydifferentfromthatofthemidoceanridgesystem,whosesource,mostgeologistscontend,,however,onthebasisofobservationsconcerningmantlexenoliths,arguethatthemantleisnotlayered,butthatheterogeneityiscreatedbyfluidsrichin"patibleelements"(elementstendingtowardliquidratherthansolidstate)percolatingupwardandtransformingportionsoftheuppermantleirregularly,accordingtothevagariesofthefluids',perhapsunimaginatively,thatthisdebatecanberesolvedthroughfurtherstudy,、难词spatial:,太空的;(或者发生)于宇宙空间的plume:,地柱xenolith:俘虏岩percolate:,弥漫于portions:、-mantlethesisisthewell-establishedfactthatvolcanicrocksfoundonoceanicislands,islandsbelievedtoresultfrommantleplumesarisingfromthelowe