GWD-7-21 有请指教,谢了!

hhnelson

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.

horsefish

文章中的effiective flight 是自己和自己比较, 不是和别的品种比较

hhnelson

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．

horsefish

以下是引用hhnelson在2004-9-22 4:39:00的发言：

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 ______.

每个品种的飞蛾对于effective flight飞行有个最佳温度,当空气温度远低于此值时, 飞蛾趴在蔬菜上长期不动,这样使得它们容易被predator攻击.总的来说, 大飞蛾比小飞蛾飞的快,因而更容易逃生, 但是这些大飞蛾需要较高的最佳温度, 这可以解释为什么大飞蛾在温暖气候比寒冷的气候下相应地较多.(b)

MM, 看看这样你是不是就理解了, 我不会用大家通用的方法解释逻辑, 我觉得看懂了就做出来了.

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.

[此贴子已经被作者于2004-9-23 14:10:32编辑过]

携隐

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

woodorstone

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% 。

sunshining

"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?

tcyj

以下是引用sunshining在2004-10-25 23:16:00的发言：

"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?

同感，当时做这题时，看完题目，脑子里就跳出这个答案，很自信地把五个选项都看了一遍，结果发现一个都不对，结果就紧张了，又把题目看一遍，后来才选B，浪费好多时间

droppa

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。

summersmile

我也感觉此题很别扭，是不是因为最后一句把因果给颠倒过来说的。og里好像也有这么一道！那次是lawyer给讲的。