费费逻辑117&120

cidisnotjayz

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 age.
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.

答案为B，求讲解。

120. In Europe, schoolchildren devote time during each school day to calisthenics. North American schools rarely offer a daily calisthenics program. Tests prove that North America children are weaker, slower, and shorter-winded than European children. We must conclude that North American children can be made physically fit only if they participate in school calisthenics on a daily basis.


Which one of the following is assumed in the passage?


A.All children can be made physically fit by daily calisthenics.
B.All children can be made equally physically fit by daily calisthenics.
C.Superior physical fitness produces superior health.
D.School calisthenics are an in indispensable factor in European children’s
E.North American children can learn to eat a more nutritious diet as well as to exercise daily.

答案D,同求讲解。

bonnie0715

第一题：
题目说中了这种病毒的人得中耳炎，而病毒不能被抗生素秒杀，只有细菌能。但是呢，小孩因为中了病毒才得了中耳炎的，用了抗生素，耳朵就好了。

那么：中了病毒------>病毒引起细菌感染-------->中耳炎。也就是说病毒的功能是引起细菌感染。就是B

第二题:我一开始选的是B。后来苦思冥想发现题干说：美国人只有跳健美操才能身体健康。那么就和equally无关了。D说的是健美操是欧洲人（健康的，我觉得关键是它省略了这个“健康的"）必不可少的因素。就排除了他因

kaikaichen

经查证，LSAT原题的（D）选项为：

(D) School calisthenics are an indispensable factor in European children’s superior physical fitness.

qiqi2010

可是还是觉得不能理解，为什么是欧洲人必不可少的因素，就说明北美人如果锻炼也可以使身体变好？