[求助]GWD6-Q15

sallyyou

GWD6-Q15:

Capuchin monkeys often rub their bodies with a certain type of millipede.  Laboratory tests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins.  Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.

 

Which of the following, if true, provides the most support for the scientists’ hypothesis?

 

1. A single millipede often gets passed around among several capuchins, all of whom rub their bodies with it.
2. The two chemicals that repel mosquitoes also repel several other varieties of insects.
3. The capuchins rarely rub their bodies with the millipedes except during the rainy season, when mosquito populations are at their peak.
4. Although the capuchins eat several species of insects, they do not eat the type of millipede they use to rub their bodies.
5. The two insect-repelling chemicals in the secretions of the millipedes are carcinogenic for humans but do not appear to be carcinogenic for capuchins.

答案给的D，我选了B，请帮助解答

sallyyou

sallyyou

sallyyou

sallyyou

ontheway1955

Correct, this evidence proves that capuchins rub their body on purpose.

xiximelody

其实我觉得应当选C，只有在雨天蚊子多的时候，它们才用那个insect挠痒，正说明了the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.

toto198698

我认为以b答案的内容进行分析，b说得的是这两种化学物质不但对蚊子有效果，而且还对其他东西有效果，这种表述方式其实应该是驳斥的一种。其格式为：文章说A可以导出B，但选项说A还能导出C。从某一方面使读者对于A可以导出B的相信概率有所下降。

c所述的主要的内容为 这些c何时rub到猴子
d所述的内容为 c吃insects，也可以理解为c把那些insects怎么样了。

c说得主要是时间上的内容，d说得是 动作上c与insects的联系。就与文章的内容方向而言，d要明显强于c。在做题中c的迷惑性很大，但如果是根据整体的句意理解后，不难发现，c一直在说的是“时间”。

Hamburger530

its not about the millipede, its about the mosquitoes

猪王山

Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.科学家的假设的重点是猴子用虫子“擦”身体这种行为是为了抗蚊子。题目的关键是问“猴子用虫”擦身体是为什么。
所以，万一猴子擦完身体为了把虫子弄死然后吃了，然后通过吃虫子抗蚊子那科学家的假设就错了，但假如猴子不吃，那职能是为了抗蚊子
排除C：只有蚊子多的时候才擦身体，然后吃了。科学家的假设也不能被证明