大全-7-14

14.   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______

(A) any uniform controls that are adopted are likely to be implemented without delay

(B) any substance to be made subject to controls can actually cause environmental damage

(C) the countries favoring uniform controls are those generating the largest quantities of effluents

(D) all of any given pollutant that is to be controlled actually reaches the North Sea at present（B）

(E) environmental damage already inflicted on the North Sea is reversible

请问D为什么错? 是错在"at present"吗?

答案是B吧。

要治理environmental threats to the North Sea，先从quality of effluents，lz注意这句话：whether or not specific environmental damage could be attributed to a particular source of effluent；连是否有specific enviromental由effluent引起都不能明确，更别提 reaches the North Sea 了，D答案我觉得有没有at present都是错误的答案；

所以为了避免过分严格的control，只要能控制effluent里面确实能引起enviromental damage的物质就可以了（B),是否largest(C)都无关；