标题: 求逻辑题目~~~NN们。。。谢谢哈 [打印本页] 作者: zscsl 时间: 2009-12-12 09:04 标题: 求逻辑题目~~~NN们。。。谢谢哈 Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally deer ticks pick up the bacterium while in the larval stage from feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor窝藏 the bacterium. Therefore, if the population of these other species were increased, the number of ticks acquiring the bacterium and hence the number of people contracting Lyme disease would likely decline.
Which of the following, if true, most strengthens the argument? jj作者选C，但是我觉得是E！大家觉得呢？
Ticks do not suffer any adverse consequences from carrying the bacterium that causes Lyme disease in humans.
There are no known cases of a human’s contracting Lyme disease through contact with white-footed mice.
A deer tick feeds only once while in the larval stage.
A single host animal can be the source of bacterium for many tick larvae.
E. None of the other species on which deer tick larvae feed harbor other bacteria that ticks transmit to humans作者: zscsl 时间: 2009-12-12 09:27
顶一下。。NN们帮忙~~作者: zscsl 时间: 2009-12-12 10:21
这个谁给我解释一下哈？作者: AllenZX 时间: 2009-12-12 10:40
能不能到相应该板块去问问题.. 另外能不能看下之前人的讨论..作者: Tima2009 时间: 2009-12-12 16:05
Facts: lyme disease is caused by a bacterium transmitted to humans by deer ticks
Evidence 1: Generally deer ticks pick up the bacterium while in the larval stage from feeding on infected white-footed mice
Evidence 2:certain other species on which the larvae feed do not harbor the bacterium
Conclusion:if the population of these other species were increased, the number of ticks acquiring the bacterium and hence the number of people contracting Lyme disease would likely decline