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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
请问这道题B选项不是削弱了assumption（whether or not specific environmental damage could be attributed to a particular source of effluent）吗？
我觉得问的就是削弱，只是前提是要环保，方案是要uniform control. 问的是为了避免过度control，所以需要仔细研究，这个是因为__。所以其实就是问uniform control的副作用。
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