再问OG-62

62. 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
(E) environmental damage already inflicted on the North Sea is reversible

62.
If a substance that causes no environmental damage were subject to controls, those controls would be more
restrictive than necessary. Choice B is therefore the best answer.
Ensuring prompt implementation of controls, as choice A claims, is not a necessary part of avoiding excessively
restrictive controls. Although it would probably help to avoid excessive restrictions if some of the countries
producing the most effluents favored uniform controls, it is not necessary that all such countries do, as choice C
claims. Not all of any given pollutant need reach the North Sea, as choice D claims, since at most some needs to.
Since the controls can be excessively restrictive even if the damage already inflicted is reversible, choice E is
incorrect.

这道题目ACE与题目的无关性，可以很容易的排除，但是BD好像就很搞，看了以前别人的提问和解释，越看越糊涂，哪位nn给我shed light 一下啊？

诚然ＡＣＥ就不用说了。

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

文章所提到的excessively restrictive，　过量得控制，意思很简单，把好的也算进坏的去了，而Ｄ所涉及的只是污染的那部分，有一部分污染的到了北海，有一部分没到，但是他们都属于污染的那部分，是应该被禁止的，对原文没有作用。因为无论这部分比例如何，它们全都是污染的，都应该被禁止。

而Ｂ．(B) any substance to be made subject to controls can actually cause environmental damage
回答是的话，那么文章的ＵＮＩＦＯＲＭ　ＣＯＮＴＲＯＬ是需要的恰当的，回答否，那么这个ＣＯＮＴＲＯＬ就是ＥＸＣＥＳＳＩＶＥＬＹ了．完美的答案．