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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. 这个题答案是B。。。但是不懂啊 这个怎么一reason的呢??? ===================================================================== 121. Observatory director: Some say that funding the mega telescope will benefit only the astronomers who will work with it. This dangerous point of view, applied to the work of Maxwell, Newton, or Einstein, would have satisfied their research and deprived the world of beneficial applications, such as the development of radio, that followed from that research.
If the statements above are put forward as an argument in favor of development of the mega telescope, which one of the following is the strongest criticism of that argument?
A. It appeals to the authority of experts who cannot have known all the issues involved in construction of the megatelescope. B. It does not identify those opposed to development of the megatelescope. C. It launches a personal attack on opponents of the megatelescope by accusing them of having a dangerous point of view. D. It does not distinguish between the economic and the intellectual senses of “benefit”. E. It does not show that the proposed mega telescope research is worthy of comparison with that of eminent scientists in its potential for applications. 答案给了E。解释:举得例子不具有可比性。。。为什么不具有可比性呢?????? |
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