环境科学 TPO40-L3 Greenhouse Effect

TPO40-L3

Greenhouse Effect

Listen to part of a lecture in an environmental science class.

 



  1. What is the main purpose of the lecture?
  • A. To argue that carbon emissions today are not the only factor responsible for global warming
  • B. To provide evidence that rates of global carbon emissions fluctuate over time
  • C. To show the importance of distinguishing between different types of carbon emissions
  • D. To describe different ways carbon is removed from the atmosphere

 

  1. What aspects of outer space does the professor emphasize?
    [CHOOSE 2 ANSWERS]
  • A. Its vastness
  • B. Its cold temperatures
  • C. The absence of life there
  • D. Its role as the ultimate source of energy on Earth

 

  1. According to the professor, how do the oceans remove carbon from the atmosphere?
    [CHOOSE 2 ANSWERS]
  • A. By dissolving it
  • B. Through a process of condensation and precipitation
  • C. By storing the remains of marine animals
  • D. Through the regulation of air temperature

 

  1. Why does the professor mention mining?
  • A. To explain why the price of fossil fuels is continually rising
  • B. To explain how certain fuel sources can be recovered from the ocean floor
  • C. To explain why coal and oil are more difficult to obtain than natural gas
  • D. To explain why fossil fuels contribute to an excess of carbon in the atmosphere

 

  1. What does the professor mean when he refers to biomass carbon as “current carbon”?
  • A. It is the fuel source most widely approved by environmentalists today.
  • B. It is part of a balanced system of carbon emission and absorption.
  • C. It is circulated throughout the oceans by the movement of ocean water.
  • D. It readily combines with other carbon molecules to produce long chains.

 

  1. Why does the professor say this: 🎧
  • A. To let students know that the term “greenhouse effect” will be tested
  • B. To indicate that the definition of “greenhouse effect” will be discussed
  • C. To suggest that his previous definition of “greenhouse effect” was imprecise
  • D. To acknowledge that there is controversy surrounding the use of the term “greenhouse effect”


答案:
C BC AC D B B

发表评论

电子邮件地址不会被公开。 必填项已用*标注