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今天的句子：
News of Elk Creek Mine’s success comes as the international climate community continues to debate how best to stop the warming of the planet, with a new emphasis on methane reduction. Yet its success comes with an asterisk. It has yet to make a profit for its investors, and complicated regulatory issues and the low prices of other energy sources in the current market may make it difficult to replicate—without new legislation or government incentives.
思考题：
The author believes that Elk Creek Mine’s success__.
A. should be widely replicated in no time
B. has not been translated into profits
C. was debated by global community
D. prove that methane is economical
感谢参于投票：
句子解析：
第一句：
News of Elk Creek Mine’s success comes as the international climate community continues to debate how best to stop the warming of the planet, with a new emphasis on methane reduction.
参考译文：麋鹿溪矿成功的消息传来之时，国际气候人士正继续辩论如何最好地阻止地球变暖，并重新强调甲烷减排。
第二句：
Yet its success comes with an asterisk.
参考译文：然而，它的成功伴随着一个脚注。
第三句：
It has yet to make a profit for its investors, and complicated regulatory issues and the low prices of other energy sources in the current market may make it difficult to replicate—without new legislation or government incentives.
参考译文：它尚未为其投资者获利，复杂的监管问题以及当前市场上其他能源的低价可能令其难以复制――如果没有新的立法或政府激励措施的话。
思考题解析：
A. should be widely replicated in no time
（应该立即被广泛复制）
A选项错误。
B. has not been translated into profits
（还没有被转化成赢利）
对应最后一句：It has yet to make a profit
记住这里的yet=not
B选项正确。
C. was debated by global community
（受到国际社会的讨论）
C选项错误。
D. prove that methane is economical
（证明甲烷是经济的）
D选项错误。
文章来源背景和来源：
In Colorado coal country, carving a path on methane
在科罗拉多州的煤炭之乡，开辟一条甲烷之路
Source: https://www.washingtonpost.com/climate-solutions/2021/05/28/colorado-ski-methane-electric-power/
背景：大气中每千克甲烷的气候暖化效应是每千克二氧化碳的120倍。虽然甲烷是非常强势的温室气体，但全球的甲烷回收利用率并不高，甚至长期以来在美国甲烷发电厂极其罕见。而在科罗拉多州的麋鹿溪矿滑雪场就是美国最早开始使用甲烷发电技术的地方之一，8年的运营后，目前其电厂每年可发电2400万千瓦时，可满足滑雪场及其休闲场所和宾馆的所有需求。同时，每年2500亿平方英尺的甲烷被拦截，没有进入大气；这相当于每年减少路上行驶的汽车50万辆。虽然从这些数字看来，甲烷发电既环保又经济，但实际却不容乐观。目前投资都尚未从中获利，且其他能源的低价位也令其不那么具有吸引力。
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