百利天下出国考试 > 托福 > 托福机经 > 2018年托福考试听力高危真题及解析—Before live on moon

[百利机经] 2018年托福考试听力高危真题及解析—Before live on moon

信息来源: 网络 发布时间:2018-03-10 直达下载地址

摘要:由于托福听力篇幅较长,市面上真题内容很少。小编整理到2018年托福听力高危真题,本文和大家分享的是“Before live on moon”这一篇讲座内容。

关键词:2018年托福考试听力高危真题及解析,2018年托福考试听力高危真题答案
机经内容:

  题目:Beforelive on moon

  1、What is the main purpose ofthe lecture

  A、To discuss a challenge thatmust be overcome before people can live on the Moon

  B、To explain some advantagesand disadvantages of building a colony on the Moon

  C、To question the reliabilityof some of the experiments on lunar soil

  D、To describe the discovery ofan atmosphere on the Moon

  2、Why does the professormention oxide compounds in the regolith

  A、To point out that multiple techniques might be required to extractoxygen from the various compounds

  B、To propose that the trace amounts of oxygen in the Moon'satmosphere escaped from the regolith

  C、To emphasize that the regolith is gray because of its high aluminumoxide content

  D、To point out that lunar soil contains large quantities of oxygen

  3、What points does theprofessor emphasize about soil samples collected during the Apollo space missionsClick on 2 answers.

  A、They are less abrasive than simulated lunar soil.

  B、Some of their properties mayhave changed.

  C、Each sample was taken from adifferent layer of the regolith.

  D、very few of them left for research.

  4、What point does the professormake when he discusses the formation of lunar soil

  A、The formation process can be replicated using vacuum pyrolysis.

  B、The number of complex compounds in lunar soil is lower than scientistsexpected.

  C、Lunar soil is a product ofrepeated exposure to violent forces.

  D、Lunar soil is comprisedprimarily of iron compounds.

  5、What does the professorimply when he mentions that lunar soil is electrically charged

  A、Lunar soil might interferewith the operation of equipment on the Moon.

  B、Lunar soil could be used asa power source on the Moon.

  C、Electrical charges on the Moon are less powerfulthan those.

  D、Extracting oxygen from lunarsoil might be easier than previous thought.

  6、Why does the professor say this: \\

  A、To suggest that the answer to his question is obvious

  B、To suggest that it is not necessary to collect more lunar soilsamples

  C、To introduce an explanation that might be unexpected

  D、To ask the students to recall what they have learned so far

  答案:1-6

  A、D、BD、C、A、C

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2018年托福听力高危真题—重听题.rar 2018年托福听力高危真题—Before live on the moon音频.rar
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