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[共享题干题]         (三) Experts Call for Local and Regional Control of Sites for Radioactive Waste根据以下材料，回答问题.        The withdrawal of Nevada's Yucca Mountain as a potential nuclear waste repository has reopened the debate over how and where to dispose of spent nuclear fuel and high-level nuclear waste. In an article in the July 10 issue of Science, University of Michigan geologist Rodney Ewing and Princeton University nuclear physicist Frank von Hippel argue that, although federal agencies should set standards and issue licenses for the approval of nuclear facilities, local communities and states should have the final approval on the siting of these facilities. The authors propose the development of multiple sites that would service the regions where nuclear reactors are located.      "The main goal..., should be to provide the United States with multiple alternatives and substantial public involvement in an open siting and design process that requires acceptance by host communities and states," the authors write.       Ewing and von Hippel also analyze the reasons why Yucca Mountain, selected by Congressin 1987 as the only site to be investigated for long-term nuclear waste disposal, finally was shelved after more than three decades of often controversial debate. The reasons include the site's geological problems, management problems, important changes in the Environmental Protection Agency's standard, unreliable funding and the failure to involve local communities in the decision-making process.        Going forward, efforts should be directed at locating storage facilities in the nation's northeastern, southeastern, mid-western and western regions, and states within a given region should be responsible for developing solutions that suit their particular circumstances. Transportation of nuclear waste over long distances, which was a concern with the Yucca Mountain site, would be less of a problem because temporary storage or geological disposal sites could be located closer to reactors.       "This regional approach would be similar to the current approach in Europe, where spent nuclear fuel and high-level nuclear waste from about 150 reactors and reprocessing plants is to be moved to a number of geological repositories in a variety of rock types," said Rodney Ewing, who has written extensively about the impact of nuclear waste management on the environment and who has analyzed safety assessment criteria for the controversial Yucca Mountain nuclear waste repository.
不定项选择题第1题What is meant by "regional approach" as mentioned in the last paragraph?
A.Waste disposal sites are located close to reactors and in places suitable for the regional circumstances.
B.Geological repositories are located in a variety of rock types.
C.Spent nuclear fuel and high-level nuclear waste is moved to developing countries.
D.Waste disposal sites are located far away from reactors.

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