我是真迷惑啊，请教高手 OG 62和66

题目在此：

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 an given pollutant that is to be controlled actually reaches the North Sea at present
(E)environmental damaged already inflicted on the North Sea is reversible

我主要是这句话不懂：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.

这到题的逻辑是什么？ 这样类型的题通常怎么是什么解题思路？

66：正确答案为什么是B, 看了OG的解释也不太懂。

问的比较多，还望高手解答！！无比感谢！

http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=20309

请到这里看看，请不要重复发贴～～～

在提问前，请先阅读置顶的发贴必读和讨论汇总，以及使用搜索功能查找是否有前人提过相同的问题

谢谢理解支持～～～

版主，我还是没有找到OG-66题的解释啊！在提问连接中也找过了~65题后面直接就是67题，难道大家都对66题没有疑问？

所以我决定还是请教一下66题！其实有位GG上个月也问了这个问题，可惜没有人回答！http://forum.chasedream.com/dispbbs.asp?BoardID=24&ID=103585&replyID=&skin=1

66. Male bowerbirds construct elaborately decorated nests, or bowers. Basing their judgment on the fact that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles, researchers have concluded that the bowerbirds’ building styles are a culturally acquired, rather than a genetically transmitted, trait.

Which of the following, if true, would most strengthen the conclusion drawn by the researchers?

(A) There are more common characteristics than there are differences among the bower-building styles of the local bowerbird population that has been studied most extensively

(B) Young male bowerbirds are inept at bower-building and apparently spend years watching their elders before becoming accomplished in the local bower style.

(C) The bowers of one species of bowerbird lack the towers and ornamentation characteristic of the bowers of most other species of bowerbird.

(D) Bowerbirds are found only in New Guinea and Australia, where local populations of the birds apparently seldom have contact with one another.

(E) It is well known that the song dialects of some songbirds are learned rather than transmitted genetically.

66. The information in choice B says that young bowerbirds progress slowly toward mastery of a bower-building style, which suggests that the skill is one they must learn, rather than one whose transmission is wholly genetic. Choice B also suggests a means of cultural transmission, namely, observation of older birds’ technique. Thus, B supports the conclusion and is the best answer. That differences within building styles are outnumbered by similarities (choice A) and that local populations have little contact (choice D) are both equally consistent with building-style differences being culturally acquired or genetically transmitted. Nor are differences among species of bowerbird (choice C) the issue. Finally, choice E confirms the possibility of birds leaning skills, but it is not evidence that bower-building styles are learned.

我看明白了为什么选项B是正确的！不过有点小小疑问关于为什么A错了！？我个人认为A的确可以达到加强的作用啊！题目中提到researchers have concluded that the bowerbirds’ building styles are a culturally acquired, rather than a genetically transmitted trait.A选项说明在同一个local的bowerbird有共同点点多于不同点，那就说明因为他们都是在同一个地方acquire了同一个地方的culture所以搭出来的鸟巢共同点多于不同点。如果是遗传的特性，因为不管哪个地方的bowerbird搭出来的鸟巢都是差不多的！

还请大家指教！