地质学 TPO39-L1 Mineral Evolution

地质学

TPO39-L1 Mineral Evolution

Listen to part of the lecture in a geology class.

 



  1. What is the main purpose of the lecture?
  • A. To explain how geologists identified the minerals present during Earth’s formation.
  • B. To explain why living organisms require certain minerals to survive.
  • C. To explain the differences between simple and compound minerals.
  • D. To explain a recent theory about mineral formation.

 

  1. What point does the professor make about the minerals present during Earth’s formation?
  • A. They were comparatively few of them.
  • B. They were more complex than minerals formed on other planets.
  • C. Most were not affected by temperature and pressure changes on early earth.
  • D. Some of them are no longer being formed naturally on Earth.

 

  1. What similarities does the professor point out between minerals and living organisms?
    [CHOOSE 2 ANSWERS]
  • A. Both first appeared on Earth at approximately the same time.
  • B. They both can be formed only in the presence of oxygen.
  • C. They both have become more diverse and complex over time.
  • D. Not only are they both shaped by their environment, but both also affect it.

 

  1. What are stromatolites?
  • A. Fossils remains of microbial mats.
  • B. Layered deposits of iron-based minerals.
  • C. Layers of rock that indicate changes in Earth’s pressure and temperature.
  • D. Rock formations created when oxygen interacts with certain metals.

 

  1. Why does the professor talk about microbial mats?
  • A. To explain why organisms tend to colonize near certain minerals.
  • B. To describe how minerals can be created by living organisms.
  • C. To illustrate the effects of geological processes on living organisms.
  • D. To emphasize that evolving life depended on the presence of oxygen.

 

  1. What does the professor think about using evidence of minerals on another planet to determine whether life has existed there?
  • A. He believes it is the most promising way to search life on another planet.
  • B. He doubts that complex minerals will ever be found on another planet.
  • C. He is cautious about assuming that certain minerals indicate the presence of life.
  • D. He is surprised that the technique was not suggested until recently.



答案:
D A CD A B C


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