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Though sucking zinc lozenges has been promoted as a treatment for the common cold, research has revealed no consistent effect. Recently, however, a zinc gel applied nasally has been shown to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouth. In order to evaluate the arguement, it would be modt helpful to determine which of the foolowing A. whether zinc is effective only against colds, or also has an effect on the other virally caused diseases. B. Whether there are remedies that do not contain zinc but that, when taken orally, can reduce the duration of colds C.whether people who frequently catch colds have a zinc deficiency D. whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc E. whether the zinc gel has an effect on the severity of cold symptoms, as well as on their duration. 选D 我选a ~ 第一枚看懂题 最后那个mouth nose 是不是废话呢~ 第二就是觉得d无关 In Patton City, says are categorized as having heavy rainfall (more than two inches), moderate rainfall(more that one inch, but no more than two inches), light rainfall(at least a trace, but no more than one inch）, or no rainfall. in 1990, there were fewer days with light rainfall than in 1910 and fewer with moderate rainfall, yet total rainfall for the year was 20 percent higher in 1990 than in 1910. In the statement above are true, then it is also possible that in Patton City A. the number of days with heavey rainfall was lower in 1990 than in 1910 B. the number of days with some rainfall, but no more than two inches, was the same in 1990 than in 1910 C the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910 D the total number of inches of rain that fell on days with moderate rainfall in 1990 was more than twice what it had been in 1910 E the average amount of rainfall per month was lower in 1990 than in 1910 答案a 不明白 看在我一个字一个字打出来得份儿上~ 大家帮帮忙 谢谢啦~  | 
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发表于 2007-7-31 21:45:00
