逻辑题求解－feifeilogic-117

edithlee

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?

Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.
Children infected with the virus are particularly susceptible to bacterial that infect the middle age.
Many children who develop middle ear infections are not infected with the virus.
Most viral infections are more difficult to treat than are most bacterial infections.
Among children not infected with the virus, fewer than 30 percent develop middle ear infections.

答案：B
A：否定原文。无关项
C：无关项
D：对原文的论断有相反的作用
E：无关项
问题是问：help to explain。那麽答案应该是顺着原文说的。


这一题的答案解释太少了，说服不了我。而他说正确答案是b， b里面的middle age又是哪里来的呢？b又怎么顺着题目走了呢？
下周就考试了，复习复得好纠结！ 求cder帮忙解答！

alzn2765

是Typo Error，应该是Middle ear。

virus develop--->bacterial manifest---->middle ear infections

Antibiotics不能治virus，但对bacterial infections有效，也就可以治疗middle ear infections（virus develop依旧可以develop但是不会有middle ear infections了）

edithlee

alzn2765 发表于 2015-8-15 20:15
是Typo Error，应该是Middle ear。

virus develop--->bacterial manifest---->middle ear infections

the ear often clear up 的意思是，virus可以继续存在吗？？

alzn2765

edithlee 发表于 2015-8-15 22:31
the ear often clear up 的意思是，virus可以继续存在吗？？

Infection治好了的意思

edithlee

alzn2765 发表于 2015-8-15 22:39
Infection治好了的意思

哦哦！！谢谢你！

ansionjoe

恩，题目middle ear 不是middle age。
help to explain ,必须得把题目不符合逻辑的地方给解释下，
只有B的解释是合理的。