狒狒的 关于鸟的削弱题 疯掉了 救命啊

呼啸700

76. 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?

(A) Blackbirds build better nests than other birds.

(B) The capacity of blackbirds to lay viable eggs increase with each successive trial during the first few years of reproduction. （答案）

(C) The breeding success of birds nesting for the second time is greater than that of birds nesting for the first time.

(D) Smaller and weaker blackbirds breed just as successfully as bigger and stronger blackbirds.

(E) Up to 25 percent of all birds are killed by predators before they start to nest.
NN们 看一下 B 到底如何削弱了 我晕了

mnebula

sdcar2010 发表于 2011-3-17 10:50
The conclusion of the argument is the first sentence - learning how to build a nest plays an importa ...

头像太赞了，是你老婆吗

徐立晨

我觉得这道题不是推理难。是文章写得太tricky了，我一直理解成小鸟通过nesting积累nesting的经验，所以没有一个选项是正确的。原文想表达的是nesting和breeding的之间的关系，这样的话，就非常好选了。

lm5054

沸沸七十多这几道题真是给楼主难着了。。。我也是连搜了好几道啊！！还是sd大神靠谱儿！！

sdcar2010

The conclusion of the argument is the first sentence - learning how to build a nest plays an important part in the breeding success of birds.

B simply provides another reason why "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 one basically removed the connection between building a nest with success in breeding.

cycyang

从题干：结论是“。。。they benefit by their nesting experience”我们要削弱它，就应该证明他们的成功生育不是（或不仅仅是）从筑巢经历（nesting experience）中受益的。

(B) The capacity of blackbirds to lay viable eggs increase with each successive trial during the first few years of reproduction.
黑鸟的生育能力与其生育前几年的连续尝试呈正比，即年龄越大，生育能力越强。