[原创]12月16日,北美,少量机井

DJungle

多谢mccoist！！

像这种新的规则，怎么我在牛人心经里都没有看到啊，是不是CD什么地方有特殊的说明啊？

lxzjojo

谢谢楼主分享~~

whirl

RC里面没有行数，我不知道在国内是不是也这样，我本来就没太准备，只做了两套POWERPREP,以为考试就是那个样子，结果考的时候发现，界面完全不一样，弄的自己一头雾水。

phoezi

谢谢分享

DJungle

多谢whirl的回答！预祝申请成功！！

li_hanhan

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?

 

1. Infectious diseases other than typhus to which the ancient Nubians were exposed are unaffected by tetracycline.
           
2. Tetracycline is not rendered ineffective as an antibiotic by exposure to the processes involved in making bread and beer.
           
3. Typhus cannot be transmitted by ingesting bread or beer contaminated with the infectious agents of this disease.
           
4. Bread and beer were the only items in the diet of the ancient Nubians which could have contained tetracycline.
           
5. Typhus is generally fatal.

   请教, 这个是啥答案捏?