本题目来源于试卷: Stratospheric Ozone，类别为 IB环境系统与社会
[单选题]
Determine to which level of pollutix16 :t imjz)kbt r-gs0on management strategy each oxea pvrw4 0)lhds0,v * fw*aj+f the below strategies belongs.
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I.
Passing legislation that regulates the amount of ozone-depleting substances (ODS) that are released into the environment.
II.
Developing technologies that will allow for the elimination of ODS from the ozone layer.
III.
Passing legislation that prohibits the use of ODS and requires the use of their alternatives.
A. Tier one: I ; Tier two: II ; Tier three: III
B. Tier one: III ; Tier two: II ; Tier three: I
C. Tier one: III ; Tier two: I ; Tier three: II
D. Tier one: III ; Tier two: I ; Tier three: II
参考答案: C
本题详细解析:
Tier one of pollutio v5fy/w ouycc/x k65b9n management strategies involves altering human activity that leads to the production of pollution, such as passing laws that prohibit the use of ODS and instead require people to use non-propellant alternatives and gas-blown plastics, therefore options A and D are incorrect. Tier two involves controlling the release of the pollutant into the environment and trying to reduce it, such as encouraging the recycling of coolants in refrigerators; therefore option B is incorrect. Finally, tier three involves the clean-up of a polluted site wv5occ / / f6wx5k9ybuyhich could be in the form of removing chlorinated compounds from the atmosphere using new technologies, or the addition of ozone into the stratosphere to compensate for the depletion. Therefore the correct answer is option C.
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