從詞、句、結構的角度GRE閱讀段是最有效也是最有收穫的一種方式，有利於大家增強長難句的分析能力，積累詞彙，寫作素材以及作文結構構架方法。下面我們就拿GRE閱讀NO題的8-1這篇文章做一個示範，來說明一下除了我們做對每一個閱讀選擇題以外，我們應該從閱讀文章中獲得些什麼資源，提煉一個文章的哪些語言要素有助於英語能力的提高。
我們從詞--句--篇章來談談這篇文章。
原文：
Geologists have long known that the Earths mantle is heterogeneous， but its spatial arrangement remains unresolvedis 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 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 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.
