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  3. Besides climate change, developing countries like China need to deal with energy【21】and environmental issues: the development of

Besides climate change, developing countries like China need to deal with energy【21】and environmental issues: the development of

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问题     Besides climate change, developing countries like China need to deal with energy【21】and environmental issues: the development of sources of clean energy needs to be【22】line with their interests. Clean energy has been given greater prominence than ever before; it is seen as a new industrial【23】and【24】of economic growth for the new century. The time for clean energy has come.
    In China, clean energy is moving ahead at full speed. Take wind power as an example: by the end of last year, China had【25】wind power generating capacity of 12. 21GW, making China the largest wind power generator in Asia and fourth in the world. But according to the research, one-third of wind power capacity is running【26】due to an inability to get the power to the national【27】.
    India-like China—relies【28】on coal for its energy needs. This will only change if the funds and technology to develop clean energy, such as wind and nuclear power, are【29】. India will not choose clean energy【30】. Nuclear power is currently the most【31】of clean energy sources.【32】, if it is to be【33】on a large scale by developing nations, technological advances will be needed to make it competitive with coal.
    Compared【34】developed countries, developing countries have more【35】choices when it comes to energy structure. Promoting economic growth requires【36】energy—and coal, the cheapest and most【37】source of energy for many countries—is the【38】choice. Cheap coal means cheap electricity and a competitive economy. Rising electricity prices would cause public【39】and impact on standards of【40】.
选项 A、resource
B、reason
C、root
D、source
答案D
解析 resource“资源、资料”；reason“原因”，表示“…的原因”时，用介词for，比如，She gave no reasons for her decision．她没有对她的决定做出任何解释。root主要指一个问题的根源、起因，比如，What lies at the root of his troubles is a sense of insecurity．他的一切忧虑源于一种不安全感。source“起源、源头、根源、原因”。本句的意思是清洁能源成为新世界经济增长的源头，选项A，B和C均不适合。所以，本题选择D。
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