标题: 【急问】本月一道逻辑狗狗 [打印本页] 作者: joyviva 时间: 2009-12-11 23:44 标题: 【急问】本月一道逻辑狗狗 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: zjqswmm 时间: 2009-12-12 12:50
我觉得选B呢~~~作者: joyviva 时间: 2009-12-12 14:07
结论下的是有关other species的作者: JNash 时间: 2009-12-13 23:17
感觉E好像说的是other bacteria 而问题的根本是Lyme，不知道其他细菌跟Lyme是什么亲戚关系？ C更直奔主题一些。虽然很纠结但是肯定是C。 因为如果幼虫只进一次食，那么显然数量更多的other species就起到作用，而且不会传染细菌。排除了幼虫吸了otherspecies 又吸了mice结果还是感染上了的风险。