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托福听力TPO1地质学真题解题思路

浏览次数:     时间:2020-12-22

  托福英语听力考试真题TPO第一套的第三篇是地貌学专题讲座。专题讲座的总体构思和出卷点剖析以下。


  专题讲座开场

  专家教授直截了当明确提出中心思想Today I want to talk about a way in which we are able to determine how old a piece of land, or some other geologic feature is - dating techniques. ……It's fundamental.即dating technique is fundamental.时代测量技术性是关键的。这儿相匹配这篇专题讲座的第一题,中心思想题What does the professor mainly discuss? 回答很显著为 B. The importance of a technique used for dating geological materials. 便是对直截了当的第一句话的一种同义词变换。

  那麼,在我们了解文章内容的主线任务是讲Dating technique is important以后,学生们毫无疑问会思索:什么叫dating technique?或是哪样dating technique?为何它关键,因此 接下去就需要关键听适用中心思想句的关键点信息内容。


  专题讲座正中间

  接下去的第一句话十分关键,专家教授说Um… Take the Grand Canyon for instance.这里有大伙儿了解的数据信号词take sth. for instance,典型性的举个例子讲课法。而事例多听举例说明行为主体,即专业名词Grand Canyon,专家教授会得出表述,为何Grand Canyon能够表明时代测量技术性的必要性。专家教授用了今昔对比的讲课法。在应用ULD这类新的dating technique以前,大家觉得Grand Canyon的碎石子来自the sand had come from an ancient mountain range fairly close by that flattened out over time,即周边的一个山峰。但在应用ULD以后,觉得碎石子来自half of the sand from the Grand Canyon was actually once part of the Appalachian Mountain阿罗萨莱斯奇亚山峰。这儿相匹配第二题Before the use of uranium-lead analysis, where did most geologists think the Grand Canyon sandstone came from?考昔日见解,回答显著为D. A nearby mountain range that had flattened out over time.基础为原文中原句。这是一个典型性的关键点信息内容。

  以后,专家教授对ULD这一专业名词做进一步解释说明,采用了全过程讲课法。听该类信息内容时,留意每一流程关键字,关键为形容词和专有名词(姿势偏向的目标)。由于这儿很有可能考较为难的一种题目-排序题,题中较为典型性。全文为So if you measure the amount of Lead in the Zircon grain, you can figure out when the grain was formed. After that, you can determine the age of Zircon from different mountain ranges. Once you do that, you can compare the age of the Zircon in the sandstone in your sample to the age of the Zircon in the mountains. If the age of the Zircon matches the age of one of the mountain ranges, then it means the sandstone actually used to be part of that particular mountain range.此段较为技术专业,即便 是做阅读题,学员都是会觉得晦涩难懂,因此 这儿务必依靠有效的合理的笔记法来解题,即鉴别第一流程形容词measure ,第二步形容词为determine,第三步为compare,较为后一步为match,大家发觉拥有这四个关键字,第三题 In the talk, the professor describe the sequence of uranium-lead dating. Summarize the sequence by putting the events in the correct order. 排序题即能够做:恰当的流程为CBA,第三步沒有考。A. Zircon in the sandstone is matched to the zircon in a particular mountain range. B. The age o zircon in a sandstone sample is determined. C. The amount of lead in sandstone zircon is measured. 大家发觉题中选择项中的关键字沒有转变,仅仅将主动语态变成了被动语态。

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