标题: 关于猴擦毛毛虫的评价题。 [打印本页] 作者: victorbj262 时间: 2010-6-8 12:59 标题: 关于猴擦毛毛虫的评价题。 例一：Capuchin monkeys in Venezuela often rub a certain type of millipede into their fur. Secretions of these millipedes have been shown to contain two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate the capuchins. The rubbing behavior is rare except during the rainy season, when mosquito populations are at their peak. Therefore, the monkeys probably rub the millipedes into their fur because doing so helps protect them against mosquitoes.
Which of the following would it be most useful to determine in order to evaluate the argument?
Whether the two chemicals provide any protection for the millipedes against their own predators
Whether the type of millipede used by the capuchin monkeys in Venezuela is found in other parts of the world
Whether animals other than capuchins rub insects of any kind into their fur
Whether the only time the millipedes are readily available to the capuchins is during the rainy season
Whether secretions of any other insects accessible to the capuchins contain chemicals that repel mosquitoes
答案是D。但我觉得E更像答案。因为D强调的是only time. 而E则说明是否rub the millipedes into their fur 是用来protect them against mosquitoes. 请教NN。作者: 暗蓝郁 时间: 2010-6-8 14:00
非NN回答一下： E是无关选项、 因为文中只在探讨这一种毛毛虫是否能够起到帮猴子防蚊虫的作用，其他种类的虫虫怎么样不会影响他们之间的关系