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标题: GWD-05-Q15 [打印本页]

作者: wangtsong 时间: 2007-12-14 18:51
标题: GWD-05-Q15

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?

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

D 是对的。

但是我觉得D好像也对。

作者: yuching730 时间: 2007-12-15 05:16

Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes

这题要找支持monkeys rub their bodies with the millipedes

与它们吃什么有啥关系?????????

所以ANS:C才对!!!!!

作者: wangtsong 时间: 2007-12-16 00:06
有关系， mondey 本来是要吃millipedes, 但是m能用来祛蚊，所以不吃了。

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