大家来看看 GWD28-Q13

cherryser

Information in the passage suggests that which of the following is true of carotenoids that a male animal uses for detoxification processes?



A.
They were not acquired directly from plants and algae.



B.
They cannot be replenished through foraging.



C.
They cannot be used simultaneously to brighten coloration.



D.
They do not affect the animal’s susceptibility to parasites.

E.
They increase the chances that the animal will be selected as a mate.

答案是C,我选E了，我觉得E很对啊，很明显就能找到，为什么选C呢……

答案是C,我选E了，我觉得E很对啊，很明显就能找到，为什么选C呢……

zdytiffany

It may be that males can use scarce carotenoids either for immune (25)      defense and detoxification or for attracting females.

我的理解是carotenoid 在动物的体内都是一样的稀少的，因此动物要么用它来抵抗病毒要么用吸引异性

howie0420

两个错: it may be就不代表ture. 而且说的是male,选项说的是animal.

louisehu

It may be that males can use scarce carotenoids either for immune (25)      defense and detoxificati ...
zdytiffany 发表于 2013-3-19 06:53

同意。
但是不知道E为什么错，大家说说。

yujunchening

关于用来解毒的色素：

C：用来解毒的同时就不能用来提亮羽毛颜色了

E：可以特高被选择为配偶的可能性（=可以提高毛色亮度）

两个其实是矛盾的哟。

dadaowuxing

E是错的. 题目问的是"用来解毒的C". 而E说用来解毒的C可以提高吸引力,it's wrong. 只有C被用作提高color的时候,才能提高male的吸引力. C被用作解毒的时候, 和吸引力无关.

hollyyao

看到这里恍然大悟了啊！！果然要读清楚题干呢！