下面就让小编来为大家介绍一下这篇托福听力TPO5学习笔记的相关内容吧，这是小编的一些见解，以便帮助大家更加充分的理解TPO真题，希望能够给正在准备托福听力的考友们带来帮助。
一、难词注解
Crater n. 火山口;弹坑vt. 在…上形成坑;取消;毁坏vi. 形成坑;消亡
Lunar adj. 月亮的，月球的;阴历的;银的;微亮的n. (Lunar)人名;(西)卢纳尔
Topographical adj. 地志的;地形学的(等于topographic)
Diameter n. 直径
Molecule n. [化学] 分子;微小颗粒，微粒
purified adj. 净化的;精制的 v. 使纯净;去除(purify的过去分词);精炼
Haul n. 拖，拉;用力拖拉;努力得到的结果;捕获物;一网捕获的鱼量;拖运距离vt. 拖运;拖拉
vi. 拖，拉;改变主意;改变方向
二、长难句分析
If we had rock samples to study, we’d know whether these small craters were formed by impacts during the final stages of planetary formation, or if they resulted from later meteor showers.如果我们研究岩石样本，我们就知道小火山口是不是在行星形成的最后阶段影响而形成的，或者是否由于最近的流星雨造成的。
难词释义：
rock samples
meteor showers
难句类型：
If引导的条件状语从句，主句中包含whether引导的宾语从句
难句拆分：
If +从句，主句是we’d know+宾语从句(whether +if)结构
三、考题对应考点
12.But there are compelling reasons in favor of another Moon landing too, um… not the least of which is trying to pinpoint the moon‟s age. We could do this in theory by studying an enormous impact crater, known as the South Pole- Aitken Basin. …this image is from the mid-90s, from the American spacecraft called Clementine. 开头原则中的直入主题式，直接交代文章主旨，从教授分析可以从 crater 来了解 Moon’s age 以及后来提到了 spacecraft’s 的 moon landing可以得出今天的重点就是 To present arguments in favor of another Moon landing。对应 B 选项。
13.Um… unlike earlier lunar missions, Clementine didn‟t orbit only around the moon‟s equator. Its orbits enable it to send back data to create this topographical map of … well, the grey and white area towards the bottom is the South Pole, the purples and blues in the middle correspond to low elevations - the SPA Basin itself, the oranges and reds around it are higher elevations. 特殊人名地名原则，要注意与这些名词有关的事情，从 professor 的分析可以看出 spacecraft Clementine 拍摄到了 South Pole,的照片也就是说飞船飞过了 polar regions ，也就是 D 选项。
14.how they redistributed pieces of a planet‟s crust and in this case, we especially want to know if any of the mantle, the layer beneath the crust, was exposed by the impact. Not everyone agrees, but some experts are convinced that whatever created the SPA Basin did penetrate the Moon‟s mantle.转折原则，but后面的内容是重点，可以看出 professor 提到 mantle 就是为了 mantle 所能为研究者所提供的信息也就是 To explain what kind of information scientists hope to obtain from the mantle.对应的是B选项。
15. Well, from radio survey data, we know that the basin contains lots of smaller craters. So it must be really old, about 4 billion years, give or take a few hundred million years. But that‟s not very precise. 结果原则，so后面的内容是重点，教授提到因为 basin contains lots of smaller craters 所以 it must be really old。可得出推断出 old的证据就是那些craters。所以选择C
16.Um… ok., say there is water ice on the moon. That would be a very practical value for a future moon base for astronauts. Water ice could be melted and purified for drinking. It could also be broken down into its component parts - oxygen and hydrogen. Oxygen could be used to breathe, and hydrogen could be turned into fuel, rocket fuel.强调原则， oxygen and hydrogen出现，后面是对这两个词的进一步介绍，Oxygen could be used to breathe 也就是 A(Water ice could be processed to provide breathable air for astronauts),and hydrogen could be turned into fuel, rocket fuel也就是 B(One component of water ice could be used as a fuel for rockets).所以选择AB
17.Professor:No…, but such crude estimates…um…(we can do better than that.)重听内容，转折原则，先是说 craters 无法提供准确的时间信息，而 rock sample 可以，而这些 sample 是源于 South Pole-Aitken Basin 因此是 D
听力文本结构框架：
这篇讲座主要讲的是支持登月的原因。首先要了解行星构成的要素及年龄，盆地的形成是很好的研究对象。接着又说月球中含有水，可以供人们呼吸和作为燃料运用。
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