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 ...

历史版本-4 由Hercules_alex更新于2013-10-09 10:10:27

原文说ＺＬ对治疗感冒有效　虽然研究人员不这么认为　同时ＺＧ也有被证明更有效在感冒的持续时间上　因为Ｇ和Ｌ有相同的形式和浓度　Ｇ的效果越好因为病毒喜欢呆在鼻子而不是嘴　问说评价

Ａ只要比较对象原文没提过此选项肯定错

Ｂ原文没比较不含锌的药物啊

Ｃ经常得感冒是否有锌缺乏症。。。

ＤＺＧ和ＺＬ的所含物质问题　原文说到过吧

Ｅ是不ＺＧ对于感冒的严重性上也有和持续性有相同的疗效　这哪和哪啊。。。杀

做完　此题用客观就足以解决问题

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 I would choose D. The conclusion of the arg is that the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouth. To evaluate this conclusion, we must assess additional information over whether this is truly why the gel is more effective. Choices A and C are outside the scope of the argument, and answer choice E is an incorrect "attractive distractor," as the argument discusses the duration of colds but never mentions the severity of cold symptoms. Finally, choice B can be eliminated as it does not shed any insight on the relationship between the zinc lozenges and the zinc gel. 

Choice D, the "best" answer (best of the bad!), evaluates whether some inherent difference between the lozenges and the gel could influence how effective each one is. This would provide addition insight into whether a factor other than the location of where each product is applied is responsible for the difference in effectiveness between the two products.