2. 外语
  3. Which of the following best completes the passage below? At a recent conference on environmental threats to the North Sea, most

Which of the following best completes the passage below? At a recent conference on environmental threats to the North Sea, most

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问题 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______.
选项 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
E、environmental damage already inflicted on the North Sea is reversible
答案B
解析 如果不能造成环境损害的物质也在控制范围内，那些控制将是超过必要范围的限制性控制。因此选项(B)是正确答案；如(A)所述，确保立即实施控制措施，不是避免过多限制性控制的必要部分。尽管如果一些产生最多废水的国家赞成一致控制，它可能有助于避免过多的限制，但没必要所有的这些国家都这样做，如选项(C)所述；不是所有的确定的污染物都需要排向北海，如选项(D)所述，因为至多只有一些需要这样；即使这种已经困扰着人们的损害是可以恢复的，由于该控制可能会产生过多的限制，选项(E)不正确。注：pollutant n．污染物质(废气等)effluent n．(discharge of)liquid waste matter，sewage，etc． e．g．from a factory into a river 废液(污水)等的排放(如从工厂排到河流)
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