feifei 逻辑117

girlwithwings · 发表于 2009-12-29 14:44:21

117. A certain viral infection is widespread among children, and about 30 percent of children infected with the virus develop middle ear infections. Antibiotics, although effective in treating bacterial infections, have no effect on the virus. Yet when middle ear infections in children infected with the virus are treated with antibiotics, the ear often clear up.

Which one of the following most helps to explain the success of the treatments with antibiotics?

A. Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.

B. Children infected with the virus are particularly susceptible to bacterial that infect the middle ear. C. Many children who develop middle ear infections are not infected with the virus.

D. Most viral infections are more difficult to treat than are most bacterial infections.

E. Among children not infected with the virus, fewer than 30 percent develop middle ear infections.

Answer B

B什么意思呢？感染病毒V的小孩易受细菌（感染中耳的细菌）感染。是吗？

题目是说有30%小孩因感染某种病毒 V 引发中耳炎，

抗生素可治细菌但对病毒无效。

但是，犯中耳炎的小孩感染此种病毒V，用抗生素可治愈。

所以根据结论反推，犯中耳炎的小孩一定是因为细菌感染，所以用抗生素才可治愈。才导出B

我的分析对吗？

prayer · 发表于 2009-12-29 15:31:20

117. A certain viral infection is widespread among children, and about 30 percent of children infected with the virus develop middle ear infections. Antibiotics, although effective in treating bacterial infections, have no effect on the virus. Yet when middle ear infections in children infected with the virus are treated with antibiotics, the ear often clear up.
病毒感染，30%感染病毒的孩子发展成中耳炎，抗菌素对病毒无效，但是治疗细菌感染有效。然而，当感染病毒的中耳炎患者用抗菌素治疗，耳朵通常就好了。

抗菌素——治疗细菌感染，对病毒无效。

抗菌素治好了耳朵——中耳炎是细菌性感染，不是病毒。

Which one of the following most helps to explain the success of the treatments with antibiotics?
B. Children infected with the virus are particularly susceptible to bacterial that infect the middle ear.

感染病毒的孩子特别易受感染中耳的细菌传染。

girlwithwings · 发表于 2010-1-4 07:57:21

谢谢。
总结

children infected with the virus ——> middle ear infections

middle ear infections + the virus ——> (antibiotics) clear up

Antibiotics treat Not Virus But Bacterial

Then middle ear infections is Bacterial infection

Namely children infected with the virus are susceptible to bacterial, then become middle ear infections.

feifei 逻辑117

所属分类: GMAT考试

正在浏览此版块的会员 ()

浏览过的版块