参考答案

正确答案：C
解析：主旨大意题。最后一段的核心内容在于最后一句话“it would mean that a number of technical alternatives(such as the choice between detergent or chalk for dispersing oil) could be examined and tested in advance so that specially trained expert would know exactly what action was needed in s given emergency(这就意味着，许多技术方面的选择，诸如是选择洗涤剂还是白垩来去除油污，可以提前进行研究和测试，以便经过专门培训的专家可以准确地了解在紧急情况下应该采取何种行动) ”。根据这句话，可以看出A) 选项中的all the technical alternations与事实不符，而B) 和D) 的陈述有明显的错误。