Critical Reasoning

[Critical Reasoning] 试题详情

Healthy lungs produce a natural antibiotic that protects them from infection by routinely killing harmful bacteria on airway surfaces.  People with cystic fibrosis, however, are unable to fight off such bacteria, even though their lungs produce normal amounts of the antibiotic.  The fluid on airway surfaces in the lungs of people with cystic fibrosis has an abnormally high salt concentration; accordingly, scientists hypothesize that the high salt concentration is what makes the antibiotic ineffective.
 
Which of the following, if true, most strongly supports the scientists' hypothesis?

Options:

When the salt concentration of the fluid on the airway surfaces of healthy people is raised artificially, the salt concentration soon returns to normal.
A sample of the antibiotic was capable of killing bacteria in an environment with an unusually low concentration of salt.
When lung tissue from people with cystic fibrosis is maintained in a solution with a normal salt concentration, the tissue can resist bacteria.
Many lung infections can be treated by applying synthetic antibiotics to the airway surfaces.
High salt concentrations have an antibiotic effect in many circumstances.

Correct:

C

Critical Reasoning

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114浏览

[点此查看答疑][Undefined]Critical Reasoning

原文的假设说是高浓度的盐使抗生素失效,BC给我的感觉好像是说低浓度中等浓度的时候抗生素是有效的。这两个选项好像差不多。
1评分
106浏览

[点此查看答疑][Undefined]Critical Reasoning

B选项说在特别低的盐度下,antibiotic可以杀菌,C说正常浓度下,可以杀菌,为什B错
0评分
95浏览

[点此查看答疑][Undefined]Critical Reasoning

剩下了A和C,我选择了C,不知道A的错误原因,请老师讲解~
0评分
57浏览

[点此查看答疑][Undefined]Critical Reasoning

老师这道题梗还是没理解。原文说 健康的肺能产生自然抗生素去杀死病毒,但纤维化的肺就无法杀菌。往往受感染的纤维化肺部检验出高浓度的盐,所以科学家得出结论,高盐度是肺无法正常抗菌的原因。问题支持该假设。所以就是补充-就是盐分导致肺ineffective。A说 故意增高健康人肺部盐分,盐浓度会回到标准水平--加盐后健康肺的反应,无法说明高浓度就是导致纤维化肺部无效。B一些样本显示低浓度盐分里的抗生素也能杀菌,这个无法对高浓度怎样形成支持。杀。C纤维化肺部的组织被控制盐浓度在一定范围就还是可以抗菌的,先放一边。D很多肺病可以用和横抗生素治疗,完全跑题,杀。E高盐度在很多情况下都存在,没有任何语义贡献,杀。所以虽然C梗没读出来也出来了答案。您看我这么推可以吗?是否有更好的方式,也请您给出合理推论的过程。谢谢!
0评分
114浏览

[点此查看答疑][Undefined]Critical Reasoning

原文的假设说是高浓度的盐使抗生素失效,BC给我的感觉好像是说低浓度中等浓度的时候抗生素是有效的。这两个选项好像差不多。
1评分
106浏览

[点此查看答疑][Undefined]Critical Reasoning

B选项说在特别低的盐度下,antibiotic可以杀菌,C说正常浓度下,可以杀菌,为什B错
0评分
95浏览

[点此查看答疑][Undefined]Critical Reasoning

剩下了A和C,我选择了C,不知道A的错误原因,请老师讲解~
0评分
57浏览

[点此查看答疑][Undefined]Critical Reasoning

老师这道题梗还是没理解。原文说 健康的肺能产生自然抗生素去杀死病毒,但纤维化的肺就无法杀菌。往往受感染的纤维化肺部检验出高浓度的盐,所以科学家得出结论,高盐度是肺无法正常抗菌的原因。问题支持该假设。所以就是补充-就是盐分导致肺ineffective。A说 故意增高健康人肺部盐分,盐浓度会回到标准水平--加盐后健康肺的反应,无法说明高浓度就是导致纤维化肺部无效。B一些样本显示低浓度盐分里的抗生素也能杀菌,这个无法对高浓度怎样形成支持。杀。C纤维化肺部的组织被控制盐浓度在一定范围就还是可以抗菌的,先放一边。D很多肺病可以用和横抗生素治疗,完全跑题,杀。E高盐度在很多情况下都存在,没有任何语义贡献,杀。所以虽然C梗没读出来也出来了答案。您看我这么推可以吗?是否有更好的方式,也请您给出合理推论的过程。谢谢!

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