GWD-7-21 有请指教,谢了!

Which of the following most logically completes the passage?

Each species of moth has an optimal body temperature for effective flight, and when air temperatures fall much below that temperature, the moths typically have to remain inactive on vegetation for extended periods, leaving them highly vulnerable to predators.  In general, larger moths can fly faster than smaller ones and hence have a better chance of evading flying predators, but they also have higher optimal body temperatures, which explains why ______.

1. large moths are generally able to maneuver better in flight than smaller moths


2. large moths are proportionally much more common in warm climates than in cool climates


3. small moths are more likely than large moths to be effectively camouflaged while on vegetation


4. large moths typically have wings that are larger in proportion to their body size than smaller moths do


5. most predators of moths prey not only on several different species of moth but also on various species of other insects

   Answer:

结合文章第一句话,还是觉得A 对. "effiective flight "maneuver better"请高手指教.

谢谢回复!

可是Ｂ答案不也是和自己比么？　转不过弯来，见笑了．

这个题目出的有点问题,我觉得. 填空题不是要综合考虑所有的信息的么.这题前面说了猎食者, 后面应该也说猎食者或者容易被天敌抓住之类啊,怎么跑出来个不相关的温暖气候.

看来逻辑题现在不能选正确答案,只能选相对较好的答案

是综合所有信息得出的结论，注意结论是：

large moths are proportionally much more common in warm climates than

也就是说，比如large moths 在温带占80%  ，同样是large moths ，在寒带占50% 。

"Each species of moth has an optimal body temperature for effective flight, and when air temperatures fall much below that temperature, the moths typically have to remain inactive on vegetation for extended periods, leaving them highly vulnerable to predators.  In general, larger moths can fly faster than smaller ones and hence have a better chance of evading flying predators, but they also have higher optimal body temperatures, which explains why ______. "

I think the logic is weird. None of the answer is right. Just can pick B in comparison.

The more reasonable answer should be such as 'which explains why under normal temperature, large moth survives less than or as many as small moth'

right?

看完题就觉得答案应该是冷得时候大的比小的要容易受到猎食。但是没有。。。没有仔细考虑。。其实可以理解成，小的在热的时候比较容易受到猎食。

B的话理解起来稍微麻烦点。。。仔细想想，大概意思是说大的在热的时候比冷的时候要相对的常见一些，因为热的时候大的飞得快，跑得掉，而主要被猎食的是小的。