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这个四月不太冷 · 2025年06月23日

解析里C和A的那个知识点是在课本里吗?

NO.PZ2022120703000017

问题如下:

An analyst argues that a rapid transition from conventional to electric cars would continue to put a strain on natural resources. This would best be explained by:

选项:

A.population growth.

B.the Jevons paradox.

C.the shift in materials used.

解释:

C is correct because one of the aspects related to a further strain on natural resources and their depletion is the result of the shift in materials used in production. "Another aspect is the shift in the resources used. For example: Clean energy technologies generally require more minerals than fossil fuel-based counterparts. An electric car uses five times as much minerals as a conventional car (...)."

A is incorrect because population growth would not be the?most likely?reason behind a strain on natural resources related to rapid transition from conventional to electric cars. Population growth, in general, is listed among the biggest causes of increased pressure on natural resources: "The rising population will put increased strain on the world’s natural resources, most notably in terms of access to food." However, the main source of a strain related to rapid transition of the industry is stemming from the change in resources used and the fact that the new technology requires more of the minerals. "Clean energy technologies generally require more minerals than fossil fuel-based counterparts. An electric car uses five times as much minerals as a conventional car (...)."

B is incorrect because the Jevons paradox is observed when "(...) relative improvements in efficiency (using fewer resources per unit of production) may be offset by increased consumption of a given product." However, switching rapidly production line from conventional to electric cars means using more resources than for fuel-based vehicles (per car produced): "An electric car uses five times as much minerals as a conventional car (...)."

解析里C和A的那个知识点是在课本里吗?可以再解释一下解析的意思吗

1 个答案

pzqa38 · 2025年06月24日

嗨,努力学习的PZer你好:


您好,这个知识点考察的是材料的使用和能耗的降低之间是一个复杂的关系,这个题目本身就是一个由于改变了材料的种类而导致的新材料生产的能耗提升。但除了题目这种原因,还有一种原因就是杰文斯悖论,讲的是消费抵消了原本能源效率提升而节约的能耗。因此题目和杰文斯悖论是材料使用和能耗降低之间不明确关系的两种原因。




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错误 正确答案应该是B。考察的知识点是杰文斯悖论,该悖论指技术提升资源使用效率后,反而因需求扩大导致整体资源消耗增加。在电动车场景中,即便电动车本身能效更高,快速普及带来的需求增长可能引发对生产资源(如电池原材料)的更大消耗,最终仍对自然资源造成压力。

2025-04-07 09:10 1 · 回答

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