ChaseDream
搜索
返回列表 发新帖
查看: 1091|回复: 0
打印 上一主题 下一主题

想来想去不明白。。。求助PREP118

[复制链接]
跳转到指定楼层
楼主
发表于 2016-10-10 14:32:14 | 只看该作者 回帖奖励 |正序浏览 |阅读模式
118. The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease.  The skeletons do show deposits of tetracycline, an antibiotic produced by a bacterium common in Nubian soil.  This bacterium can flourish on the dried grain used for making two staples of the Nubian diet, beer and bread.  Thus, tetracycline in their food probably explains the low incidence of typhus among ancient Nubians.
Which of the following is an assumption on which the argument relies?
(A) Infectious diseases other than typhus to which the ancient Nubians were exposed are unaffected by tetracycline.
(B) Tetracycline is not rendered ineffective as an antibiotic by exposure to the processes involved in making bread and beer.
(C) Typhus cannot be transmitted by ingesting bread or beer contaminated with the infectious agents of this disease.
(D) Bread and beer were the only items in the diet of the ancient Nubians which could have contained tetracycline.
(E) Typhus is generally fatal.


求助一下!按照HELR的方法解题,这题属于相关-因果,B选项我理解。
C选项为何不行呢?C讲的是“当面包和酒(抗体)被致病原感染污染时,食用该面包和酒不会受Typhus感染”
这个不符合CQ1:在其他时间、地点下,A仍然导致B吗?

收藏收藏 收藏收藏
您需要登录后才可以回帖 登录 | 立即注册

手机版|ChaseDream|GMT+8, 2024-12-5 11:26
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2023 ChaseDream.com. All Rights Reserved.

返回顶部