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戴宣龙 · 2023年11月05日

根据ETS的说明,A项不是更对吗?explicit price不就是定义中“set their price”吗?

Which of the following statements is most accurate? An emission trading system: (V4 


A. sets an explicit price on greenhouse gas emissions.

B. mandates similar levels of emissions reductions for all actors.

C. creates an economic incentive for emissions reductions to occur at the point of least cost.


ETS: a system based on the exchange of per mits for emission units, where actors who exceed their emissions limits are required to buy permits from those that have emitted less. 

. The overall quantity of emissions is fixed, and market mechanisms are used 

to set their price. 

. E'ectiveness in Practice: depends crucially on the design of the ETS. 

. If the scheme is too restrictive,'carbon leakage'occurs. 

. Free a/location of allowances (to give industry an initial'buffer') has been a 

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王岑 · 2023年11月06日

嗨,从没放弃的小努力你好:


A选项是碳税的特征,而不是排放交易系统的。碳税直接对排放量征收固定税率,从而为每单位温室气体排放设定了一个明确的价格。

排放交易系统通过设置总排放上限,并允许污染者之间买卖排放权,从而在成本最低的地方实现减排。如果某个企业减排成本较低,它可以多减排一些,并将额外的减排量作为排放权出售给减排成本较高的其他企业。这样,排放交易系统总体上促进了在成本最低的点实现减排,从而提高了整体经济效率。“The overall quantity of emissions is fixed, and market mechanisms are used to set their price.”

换句话说,在碳排放交易系统里,排放的总量是固定的,利用的市场机制,如果市场上碳排放的余量多,需求小,那么排放的价格就低,反之,价格就会高。

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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