急问逻辑一道

summer614

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 argument , it would be most helpful to determine which of the following ?

whether zinc is effective only against colds, or also has an effect on other virally caused diseases

whether there are remedies that do not contain zinc but that , when taken orally, can reduce the duration of colds

whether people who frequently catch colds have a zinc deficiency

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

whether the zinc gel has an effect on the severity of cold symptoms , as well as on their duration

e

为什么b不可以

weiyu

我错选了C。

though sucking zinc lozenges has been promoted as a treatment for the common cold , research has revealed no consistent effect(吃到嘴里没效果）. Recently , however , a zinc gel applied nasally has been shown to greatly reduce the duration of colds（吸到鼻子里有效果） . 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（解释）

解释－》现象

如果这种方法还作为其它用处，那莫这种解释就不一定能满足除了reduce duration以外的其它目的。

dreadpower

   最近逻辑区和语法区帖了许多真题，做语法真题还好，正确率大概在70%多点

    逻辑真题正确率估计只有50%。。。郁闷ing

    一直觉得自己的阅读和逻辑是强项，语法上比较次一点，怎么会这样？？？

   许多逻辑真题，文章看的似懂非懂的，选项看完一点感觉都没有，不知道如何下手。。。。晕掉了

    难道退步了？？？？做完几个逻辑真题，不要太沮丧啊。。。。

    请教weiyu兄，该怎么办？？？

睡熊

这道题的答案应该是（D）,属于排除它因型评价题。

mindfree

Agree with 睡熊.

There are two differences: different types of Zinc supplements and different areas to apply. To proof one difference was in effect, you have to determine whether it is actually the other difference that has caused the effect. Therefore D is correct.

dreadpower

   呵呵，原来我是做对的。。。谢谢总教头

weiyu

Thanks, mindfree

primefang

再问一下

文章的结论是： cold viruses tend to concentrate in the nose, not the mouth。 所以要评论的理由要和cold viruses 在哪里concentrate 有关。 这里只有B起到了她因的作用， 大家觉得那？

juniya

我也选了D, 但看到楼主的答案后很郁闷

在往下看，呵呵

但是，不知道楼主贴的答案是......