分析GRE阅读中的难句难词
英语课
现在，我们拿GRE阅读NO题的NO8-1这篇文章做一个示范，来说明一下怎样提高新GRE阅读能力。
NO8-1，我们从“词--句--篇章”来谈谈这篇文章。
原文：
Geologists 1 have long known that the Earth‘s mantle 2 is heterogeneous 3， but its spatial 4 arrangement remains 5 unresolved-is the mantle essentially 6 layered or irregularly heterogeneous? The best evidence for the layered-mantle thesis is the well-established fact that volcanic 7 rocks found on oceanic islands， islands believed to result from mantle plumes 8 arising from the lower mantle，are composed of material fundamentally different from that of the midocean ridge 9 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 10 is created by fluids rich in “incompatible elements” (elements tending toward liquid rather than solid state) percolating 11 upward and transforming portions of the upper mantle irregularly， accordingto the vagaries 12 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，mostgeologists 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。
以上对于新GRE阅读理解解析，就能看出我们分析一篇GRE阅读理解文章时候，需要作出那些准备以及利用什么方向进行GRE阅读理解。希望考生们取得理想的成绩，实现梦想。
地质学家，地质学者( geologist的名词复数 )
- Geologists uncovered the hidden riches. 地质学家发现了地下的宝藏。
- Geologists study the structure of the rocks. 地质学家研究岩石结构。
n.斗篷，覆罩之物，罩子；v.罩住，覆盖，脸红
- The earth had donned her mantle of brightest green.大地披上了苍翠欲滴的绿色斗篷。
- The mountain was covered with a mantle of snow.山上覆盖着一层雪。
adj.庞杂的；异类的
- There is a heterogeneous mass of papers in the teacher's office.老师的办公室里堆满了大批不同的论文。
- America has a very heterogeneous population.美国人口是由不同种族组成的。
adj.空间的，占据空间的
- This part of brain judges the spatial relationship between objects.大脑的这部分判断物体间的空间关系。
- They said that time is the feeling of spatial displacement.他们说时间是空间位移的感觉。
n.剩余物，残留物；遗体，遗迹
- He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
- The remains of the meal were fed to the dog.残羹剩饭喂狗了。
adv.本质上，实质上，基本上
- Really great men are essentially modest.真正的伟人大都很谦虚。
- She is an essentially selfish person.她本质上是个自私自利的人。
adj.火山的；象火山的；由火山引起的
- There have been several volcanic eruptions this year.今年火山爆发了好几次。
- Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
羽毛( plume的名词复数 )； 羽毛饰； 羽毛状物； 升上空中的羽状物
- The dancer wore a headdress of pink ostrich plumes. 那位舞蹈演员戴着粉色鸵鸟毛制作的头饰。
- The plumes on her bonnet barely moved as she nodded. 她点点头，那帽子的羽毛在一个劲儿颤动。
n.山脊；鼻梁；分水岭
- We clambered up the hillside to the ridge above.我们沿着山坡费力地爬上了山脊。
- The infantry were advancing to attack the ridge.步兵部队正在向前挺进攻打山脊。
n.异质性；多相性
- The heterogeneity and uneven development of China's economy are rather advantageous in the war of resistance.中国经济的不统一、不平衡，对于抗日战争反为有利。
- In heterogeneity is creation of the world.世界产生自异质性。
n.渗透v.滤( percolate的现在分词 )；渗透；（思想等）渗透；渗入
- Bubbles simply supply a short cut for the faster-moving percolating gas. 气泡不过是对快速运动的渗透气体提供了一条捷径。 来自辞典例句
- I' ll percolate some coffee, ie make it by percolating. 我去用过滤法煮些咖啡。 来自辞典例句