讨论一道真题

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 nasaly 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 due to the fact that cold virus tend to concentrate in the nose, not the mouth.

In order to evaluate the argument, it would be most helpful to determine which of the following:

A. wheter zinc is effective only against colds, or also has an effect on other virally caused diesases.

B. wheter there are remidies 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 zind deficiency.

D. whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc.

E. whehter the zinc gel has an effect on the severity of cold symptoms, as well as their durations.

答案给的是E， 我选D，想不明白， 请NN指点

是啊，我觉得应该选D。

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 nasaly 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 due to the fact that cold virus tend to concentrate in the nose, not the mouth.

虽然口服锌糖被作为治疗普通感冒的一种方法, 相应的研究却没有表明相应的效用. 但是最近,一种锌的凝胶体敷用在鼻子上被证明能有效减少感冒的时间. 因为凝胶体和止咳糖有相同的形态和浓度, 凝胶体的巨大效用是基于这样一个事实,即感冒病毒作用于鼻子而不是口腔.

作为评价这个命题的城里与否 D非常准确地说明了相同条件下位置不同所引起的作用的差异. 而E只是片面地强调了凝胶体的作用,没有把整个命题相关部分结合起来. 这样对于命题的评价就不准确. 所以说D正确