redhat

test2-Section II-18.
18.Learning how to build a nest plays an important part in the breeding success of birds. For example, Dr. Snow has recorded the success of a number of blackbirds in several successive years. He finds that birds nesting for the first time are less successful in breeding than are older birds, and also less successful than they themselves are a year later. This cannot be a mere matter of size and strength, since blackbirds, like the great majority of birds, are fully grown when they leave the nest. it is difficult to avoid the conclusion that they benefit by their nesting experience.

Which one of the following, if true, would most weaken the argument?

Why the ans is :
(B) The capacity of blackbirds to lay viable eggs increases with each successive trial during the first few years of reproduction.

无法找出题目和答案的关联性


[em23][em23][em23][em23]

redhat

to bessette:

Good luck to you.

大概了解了, 是不是说
就是说黑鸟的繁殖成功率的提高不是得宜于筑巢经历，而是由于它们下成活率高的蛋的能力随每次successive trial提高了, so 不是benefit their nesting experience
而这trial是不是equal to “nesting” 但还是不了解有何weaken之处?

[em14][em14][em14]

redhat

以下是引用bessette在2002-10-27 17:05:55的发言：
principle: good => benefit + good intention
           bad intention OR likely cause harm => bad

A: intention( attempt to cause trouble) => bad
   benefit + bad intention => not good (bad) 这是应用第一个原则的等价原则(逆否命题) 

(A) Pamela wrote a letter attempting to cause trouble between Edward and his friends; this action of Pamela’s was morally bad, even though the letter, in fact, had an effect directly opposite from the one intended

我也选A
A不是符合bad intention OR likely cause harm => bad吗?

"even though the letter, in fact, had an effect directly opposite from the one intended"是什么意思啊

请高手帮忙THANKS!