练习：
1. Which of the following words can best substitute the word “withdrawal” in the first paragraph？
A Retirement. B Canceling. C Replaced. D Disposal.
2. According to Rodney Ewing and Frand von Hippel， where to locate nuclear facilities
A should be approved by the federal government.
B should be approved by local people and states. C should be approved by Congress.
D is not an important issue.
3. What is NOT true about the 1987 decision by Congress concerning siting of nuclear waste disposal？
A Yucca Mountain was selected as the only site for a nuclear waste repository.
B The selection of Yucca Mountain for nuclear waste disposal caused much controversy.
C The decision by Congress was put aside due to a number of problems. D The decision by Congress was accepted by local communities.
4. What does the author of the essay in the fourth paragraph want to say？
A Efforts should be made to solve the problems of transportation of nuclear waste over long distance.
B Efforts should be made to develop as many nuclear disposal sites in the US as possible.
C Efforts should be made to develop nuclear disposal sites to suit the circumstances of the region.
D Efforts should be made to build up temporary nuclear disposal sites as possible.
5. 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.
答案与题解：
1. B withdrawal 是个多义词，在句子中的意思是“撤销”或“中止”。
2. B 第二段中提到的两个科学家认为，联邦政府可以设定核设备的标准，以及颁发许可 证，但是州政府或地方政府在选址问题上应该有最终决定权。
3. D 第三段的第一个句子包含了 A、B 和 C 所述内容。
4. C 尽管第四段提到了尤卡山的确存在长距离运送核废料的问题，但不是这段的主要内 容，所以 A 不是正确选择。作者说，要在全国东西南北各地区建造核废料处置库，但没 有说要尽量多的建造，所以 B 也不是正确选择。作者想表达的意思是，要在全国各地区 建造核废料处置库，但州政府必须根据地方特殊情况制定方案，包括最后一句中所说的 “靠近核反应堆”的临时处置库。所以，C 是正确的。D 也不是作者的意思。
5. A This regional approach 的意思是：地域性方法，指的是前一段中所表述的内容， 即，地方政府应当考虑当地的特殊环境，对核废物的处置地选择负责。B、C 和 D 的表述 内容都是错误理解。