标题: 逻辑JJ 一题原题求解~~ [打印本页] 作者: hq304744879 时间: 2012-10-21 00:46 标题: 逻辑JJ 一题原题求解~~ 21.【老鼠检测| 削弱】【V1】还有一道关于用老鼠做实验检测药物的 又见原题： GWD-29-Q40 Mice that have been given morphine are very likely to develop blood poisoning because bacteria that normally reside in the intestine typically respond to morphine by migrating into the bloodstream. However, when mice are given both morphine and the new drug naltrexone, blood poisoning is much less frequent, although it does still occur. These results provide support for researchers’ prediction that naltrexone will turn out to be toxic to certain types of bacteria. Which of the following, if discovered to be true, would most seriously weaken the support for the researchers’ prediction?
A. After being administered to mice, naltrexone does not pass from the bloodstream into the intestine. B. Naltrexone inhibits morphine from triggering the migration of intestinal bacteria into the bloodstream. C. Mice that have been given naltrexone but not morphine have no greater risk of developing blood poisoning than do mice that have not been given either substance. D. The increased risk of blood poisoning is not the only harmful effect on mice of being given morphine. E. Conditions other than the presence of intestinal bacteria in the bloodstream can cause blood poisoning in mice.作者: hq304744879 时间: 2012-10-21 00:46
这题怎么理解啊~？？作者: mamamiyang 时间: 2012-10-21 02:16
以前讨论过的http://forum.chasedream.com/GMAT_CR/thread-351572-1-5.html作者: sceaxus 时间: 2012-10-21 11:48
老鼠本来肠子里面有这个细菌，活得尚好，吗啡来了，把细菌逼到血管，血中毒了。这药来了把细菌困在肠子里面，那老鼠本来肠子就可以承受这细菌，自然就又活得尚好了，那这药到底能不能杀这细菌就说不清了，很有可能是没用的，是老鼠自己免疫就可以搞定的。结论最多也就到要可以防止细菌迁移到血管，不能说这药对细菌有杀灭作用从而可以治疗血中毒。。。不知道我讲明白了没有。。。作者: beihorse 时间: 2012-10-21 13:08
也许是这药中和了吗啡，所以吗啡不会把细菌引到血管中来了。药可能作用于吗啡。作者: cd11223 时间: 2012-10-21 13:13
这道题俺没看懂，如果碰到就直接打算记答案了，如果不幸变形了，那俺就悲剧了，，