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题库 / Prep2007E1-CR-61
Which of the following best completes the passage below?
At a recent conference on environmental threats to the North Sea, most participating countries favored uniform controls on the quality of effluents, whether or not specific environmental damage could be attributed to a particular source of effluent. What must, of course, be shown, in order to avoid excessively restrictive controls, is that __________.
any uniform controls that are adopted are likely to be implemented without delay
any substance to be made subject to controls can actually cause environmental damage
the countries favoring uniform controls are those generating the largest quantities of effluents
all of any given pollutant that is to be controlled actually reaches the North Sea at present
environmental damage already inflicted on the North Sea is reversible
在一个会议上几个国家同意统一控制污水的质量，不管是否环境污染真的可以归因于是其中某一种污水造成的。为了避免过度控制，必须
choice b,任何将要被控制的污水确确实实产生了环境破坏
choice d,将要被控制的污染物现在已经到达了north sea。irrelevant，这个选项必须assume只有到达了North sea的污染物才可以破坏环境，这一信息原文没有提供
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