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托福备考第3天——TPO听力材料精听分析(三)

上一篇:托福备考第2天——TPO听力材料精听分析(二)


好家伙,今天才学会按下TPO的“单句循环+下一句”的组合操作。

之前根本就是一直在手动拖进度条、反复调整、重复播放。(因为这个UI有的时候播放按键明明没打开还在播放,感觉程序有问题,所以索性就没测试单句循环)

这么一来,听写效率大幅度提升了。(感觉TPO本来就是这么设计的,专门给听写的,当然我不知道我拿到的是不是魔改版的TPO)

哦,我知道了,你在它所谓提供的听写笔记本里面写东西的时候,千万别动方向键(尽管你想通过方向键移动光标),这会直接导致触发上面的按钮。

所以听写的最佳实践还是在word里面。

听写并纠错后的结果:

Listen to part of lecture in the Geology Class. (地质学)

OK, let's get started. Great! Today I want to talk about a way and in which we are able to determine how old a piece of land or some other geologic featuresfeature is - dating technics techniques. I'm going to talk about a particular dating technic technique, why? Good dating is a key to good analysis. In other words, if you want to know how a land formation was formed, the first thing you probably want to know is how old it is, it foundmental fundamental.

eh... um... take the Grand kenian Canyon for instance. Now, we geologists thought we had a pretty good idea of how the grandkenian Grand Canyon in the south-west southwestern united-states was formed. We knew that it was formed from sandstone that salisfy solidified somewhere between 150 and 300 million years ago. Before it salisfy solidified, they were it was just regular sand, the centurely Essentially, it was part of a vast desert.

And until just recently, most of us stalk thought the sand could had come from an ancient moutain range ralely farely close by at that flat flattened out overtime. That's been the conventional with the wisdom mount among geologists for quite some time. But now we've learned something different and quite surprising using a technic technique called youraininlate Uranium-Lead Dating.

I should say that youraininginlate dating Uranium-Lead Dating has been around for quite a while. But there have been some recent refilements refinements. I'll get it in into this in a minute. Anyway, youraininginlate Uranium-Lead Dating has produced some surprises. Two geogists geologists discovered that about half of the sand from the goundkanian Grand Canyon was actually one's part of the aberlegen mountian Appalachian Mountains. That's really eye opening news, since the aplengen Appalachian moutain ranges is, of course, thousands of kilometres kilometers to the east to of the grand kanian Grand Canyon. Sounds pretty unbelievable right?

Of course, the obvious question is, how did that sand end up so far west? The serie theory is that huge rivers and wind carry carried the sand west, where mixing it mixed with the sand that was already there. Well, this was a pretty revolutionary finding. eh.. um...And it was basically because of euraningemlatedating Uranium-Lead Dating. Why?

Well, is as everyone in this class should know, we usually look at the grand grain type within sandstorm sandstone, meaning the actual particles in the sandstorm sandstone, to determine where it came from. You can do other things too, like look at the wind or water that brought the grains to their location and figure out which way it was flowing. But that's only useful up to a point, and that's not were what these two geoligists did. 

Yourainingemlatedating Uranium-Lead Dating allow them to go about it in an entirely different way. What they did was, they looked at the grains of observe corn Zircon in the sandstorm sandstone. Thecorn Zircon is a material that contains radio activity radioactive of raining Uranium, which makes it very useful for dating purposes. eh...

Thecorn Zircon starts off as motan megma molten magma, the hot lava from vocanoes. These megma magma burn crystalysis then crystallizes. And when thecorn Zircon crystalises crystallizes, the urinian Uranium inside begins to change into led Lead. So if you measure the amount of led in the cercorn gran Lead in the zircon grain, you can figure out when the gran grain was formed. After that, you can determine the age of cercorn Zircon from different mountain ranges.

Once you do that, you can compare the age of cercorn the Zircon in the sandstorm sandstone in your sample to the age of cercorn the Zircon in the mountains. If the age of cercorn the Zircon matches the age of one of your mountain ranges, that then it means the sandstone actually used to be part of that particular mountain range. Is everybody with me on that? Good! So in this case, yourainingemlateddating Uranium-Lead Dating was used to establish that half of the sandstone in the sample was formed at the same time that ground  the granite evlengenmoutain in the Appalachian Mountains was formed.

So because of this, these new way of doing euranianemlatedating Uranium-Lead Dating, we've been able to determine that one of the our major sumptions assumptions about the grand canean,  Grand Canyon was wrong. Like I said before, ??? Uranium-Lead Dating has been with us for a while.

But eh... um.... until recently, in order to do it, you really have to study million many individual grans grains. And it took a long time before you got results. It just wasn't very efficient. And it wasn't very agurate accurate.

But techinical advenserses has technical advances have cut down on the number grans grains you have to study, so you get the result your results faster. So operadect, um.... you rainingemlatedating I'll predict that Uranium-Lead Dating is going to become an increasingly popular dating method. There are a few pretty exiting exciting possibilities for you rainingemlatedating Uranium-Lead Dating

Here's the is one that comes to mind. You know, the serie theory that earth's contenents continents for one's join once joined together and only splitpart split apart relatively recently. Well, with ??dating  Uranium-Lead Dating we can could prove that more conclusively. If they show evidence of one's once having being been joined, that could really tell us a lot about the early history of the planet's geology.

试题部分:

What does the professor mainly discuss?
The difference in age among American mountain ranges.
√The importance of a technique used for dating geological materials.
The recent discovery of an ancient canyon.
A comparison of various minerals used for dating.

Before the use of uranium-lead analysis, where did most geologists think the Grand Canyon sandstone came from?
An ancient lake located in the American Southwest.
A desert that once connected two continents.
Sands carried by a river from the Appalachian Mountains.
√A nearby mountain range that had flattened out over time. 
(这一题很难做对,因为不一定听得出来,from an ancient mountain range fairly close by that flattened out over time.)
(我是听出来了,也不知道flattened out over time什么意思)(所以不可能选对)

拖选题,我还是第一次见到。

拿到山的zircon;

测不同zircon对应的样本;

拿山的zircon跟样本比对。

(这一题,直接pass)(你如果是第一次做的话,几乎没有做对的可能性,除非你对这个主题非常熟悉)

According to the professor, what change has caused uranium-lead dating to gain popularity recently?
lt can be performed outside a laboratory.
√lt can now be done more efficiently.
lt no longer involves radioactive elements.
lt can be used in fields other than geology.

Why does the professor talk about the breaking apart of Earth's continents?
√To give another example of how uranium-lead dating might be useful.
To explain how the Grand Canyon was formed.
To demonstrate how difficult uranium-lead dating is.
To disprove a theory about the age of Earth's first mountain ranges.

Listen again to part of the conversation/lecture. then answer the question.

What does the professor imply when he says this:

The class is easier than other geology classes.
√The class has already studied the information he is discussing.
Some students should take a course in geological dating techniques.
He will discuss the topic later in the class.

不容易听出来单词和短语:

  • solidified (使)凝固
  • Essentially 基本上
  • thought (真没听出来,虽然很常见)
  • wisdom (听成了with the草)
  • among (听成了mount)
  • theory (听成了 serie)
  • grain (谷物) (这个grain必然听不出来)(我不知道是不是这个学科的关键词)
  • Lead 铅 (你能想到美式读法是读成led嘛,草

不认识的单词:

  • Grand Canyon (大峡谷,特指 亚利桑那州大峡谷)
  • sandstone(砂岩)
  • techniques(听出来但不会写)
  • Uranium-Lead Dating (铀铅测年法) (好家伙,我听的时候一直把它当成同位素之类的)
  • refinements (改进)(这里是指改进,但别忘了这个单词还有提纯的意思)
  • Appalachian Mountains (阿巴拉契亚山脉)(有一说一,这真是在考美国地理罢,这玩意儿非美国人会知道?)
  • grain (谷物)  (这个必然不是指谷物,在这里是指 颗粒
  • particles(粒子)(事物的部分,特指组成事物的微小粒子,基本单位)(这个单词100%会在天文学里面再碰到)(虽然之前我已经在学日语里面的小品词里面碰到了这种说法)(之前在particle 和 auxiliary word 的区别这个问题上想了很久)(怎么说呢,我的区别方法:particle小品词、auxiliary word助动词)
  • Zircon 锆石 (本篇最关键的生词)(虽然不知道它是啥也没什么关系)
  • radioactive 放射性的
  • molten magma (熔融岩浆) (不懂这个也没关系,后面那句解释什么叫molten magma)
  • magma 岩浆
  • molten 熔化的
  • Uranium 铀
  • Lead 铅 (这个意思我是真的不知道,草)(一般只知道lead有带领的意思)
  • granite 花岗岩 (这就是为啥你TOEFL要背那么多单词了)(其实我更鼓励精读TPO之后再去背单词比较好)(直接先背单词反而没太大意义)
  • continents 大陆;洲(听出来了,但没想到是板块大陆的意思)

不熟悉的地道的表达方式:

  • a way in which (没想到口语里面会这么表达)
  • solidified (写出来我认识,口语里面说出来,不一定知道是什么,也许他们常用这个单词)
  • Essentially (能把它放在开头嘛?至少教我写作文的老师可没说过,嘛,这样的口语表达方式我也是头一次见)
  • thought (很常见)
  • fairly close (相当近)(fairly相当常用)(几乎使用频率relatively相比较而言 是一致的)
  • flattened out 展平
  • among (这个其实在口语里面用得应该比较多)
  • theory (这个单词在lecture里面应该会非常常见)
  • a pretty revolutionary finding (这个短语用到作文里应该挺不错)
  • grain type within sandstone (沙砾中的纹理类型)(虽然TPO给的翻译是这样的,Google给的是砂岩中的颗粒类型)
  • grain (这样的话,算一种地道的表达方式吧,专门形容细小颗粒)
  • But that's only useful up to a point (但这只在一定程度上有用)
  • assumptions 假设 (口语很少说这个,这应该跟课题相关才会说)(lecture里面应该很常见)(听不听得出是另外一回事)
  • accurate (我是没想到这会在口语出现)
  • I'll predict that 我预言... (这种表达方式在听力也是第一次见)
  • Here is one that comes to mind. (语速非常快)(估计是个很常见的表达方式)

这个lecture整体来讲,难度有点大,主要是生词+陌生的主题。

你不知道zircon是什么东西,你也不知道什么叫uranium-lead,总之,还有一大堆名词。

我错了2题目,第2条的选择题和第3条的拖选题。(不过现在好像应该不考拖选题了?)

尽管并不是完全懂,还是能做对一部分。(倒不如说问题问的很简单)(没有脑筋急转弯)(听懂就能做对)

说白了,这玩意儿你只要能听懂了就不会做错。

lecture的话,目前不加试的话,是3个,加试的话是4个lecture。

conversation,不加试一般2个,加试就是3个。

以前的话,最多可以听力部分考6个lecture。

总而言之,conversation给我的感觉,比lecture好考很多。(不过,下面一篇就是conversation了,再体验一下再说)

 

主目录:https://www.v2know.com/MainPage/Category/TOEFL

下一篇:托福备考第4天——TPO听力材料精听分析(四)

This article was last edited at 2021-02-02 08:47:01

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