Q27:
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?
C,E哪个对?
CE是无关项.只有D把这个问题说清了.楼主再看看文章吧.
先把文章读懂再看选项.
哦,问错了。..
晕
是B对什么不对啊
在BD中徘徊许久
哦,问错了。..
晕
是B对什么不对啊
在BD中徘徊许久
B也是无关项.因为文章比较的两个都含zinc的.只是用法不同.
B说的:Whether there are remedies that do not contain zinc but that, when taken orally, can reduce the duration of colds
有或是没有都不能评价文章说的事实.
问一下
原文的结论是
the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouth.
还是
the fact that cold viruses tend to concentrate in the nose, not the mouth
如果是后者,是不是BD都可以?
问一下
原文的结论是
the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouth.
还是
the fact that cold viruses tend to concentrate in the nose, not the mouth
如果是后者,是不是BD都可以?
是这个"the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouth."
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.
D:Whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc.
如果是YES, 就是说这两种药因为有其它的东东引起了药效不一样,那么就不能说cold viruses tend to concentrate in the nose, not the mouth.
如果是NO,那就是两种药因药效一样,是可以说cold viruses tend to concentrate in the nose, not the mouth.
因此D是可以evaluate原文.
明白了，谢谢斑竹！
顶D
這題選D啊，我手中的答案說選B，搞得我以爲我腦子又不靈光了
浪費我感情
开始也选B，
但B有个问题就是楼上只说不含锌的口服药也有效，若无效则无法评估。
后来想想还是D更贴切——像wangwei8581 说的：
单因子变量才能保证比较试验
还是不明白啊，D选项：区别一个是gel一个是XX，为什么要讨论他们共同有的特征呢（都有zinc）？
UP
D
gel是鼻腔给药
lozenges是口腔给药
文章的结论是说 虽然两种剂型里 zinc的形式和浓度是一样的，但是明显gel的药效更强
d的意思是说，是否gel或者lozenges 中含有附加成分也就是辅料影响了zinc的药效
这是针对 Since the gel contains zinc in the same form and concentration as the lozenges这句话的
我差点选成B，因为B是貌似批驳 结论的原因的，鼻腔比口腔中有更多的细菌
但是B是说，另一种药在口腔中有效，lozenges本身在口腔中也有效
如果B换成 另一种药在口腔中比在鼻腔中有效，那么我们还可以考虑，也算是一个弱weaken
从专业的角度来考虑这个问题
文中说must be true，那么D找出了另一个原因，最直接的批判了 must be true
B为什么不对，因为从新药开发的角度来讲，就算另外有一种药在口腔给药也证明有效，我们也不能证明什么
因为口腔和鼻腔的血液是相通的，口腔吸收也可以到鼻腔
这和药物性质有关
有的药物是大分子，就是在口腔比在鼻腔吸收好
所以B的情况太复杂，并不能直接的去驳斥argument
为什么不选e啊。e的感冒症状就是指鼻子啊（感冒会打喷嚏，不会流口水的，呵呵）。所以关系到病毒是在鼻子里或是在嘴里啊，跟原文结合岂不会更紧。
Q27:
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?
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.
D:Whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc.
如果是YES, 就是说这两种药因为有其它的东东引起了药效不一样,那么就不能说cold viruses tend to concentrate in the nose, not the mouth.
如果是NO,那就是两种药因药效一样,是可以说cold viruses tend to concentrate in the nose, not the mouth.
因此D是可以evaluate原文.
同意版主的解释,B是无关选项
如果能把D改写成either the zinc gel or the lozenges contain ingredients that have the same impact就更好了
B
1. 注意原题的结论是“gel之所以有效是因为病毒聚集在鼻子而非嘴部”，如果有别的口服药物证明有效，那么削弱结论，说明病毒不是在鼻子；否则加强结论；
2. D的错误在于，题干根本没说zinc是导致药物有效从而治疗cold的成分，即使gel或者lozenge含有影响zinc的成分又怎么样呢？
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.
结论说：因为gel和lozenges两者的zinc含量和形式的一样的，所以影响药效的原因只能是“服药方式”（假设：只有这两种因素）
D:
Whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc.（是否有第三种因素影响药效）
如果是YES, 就是说这两种药因为有其它的
ingredients 引起了药效不一样,那么就不能说是“服药方式”影响药效了.、
B说，是否有不含 zinc 的口服药能治疗。文章说的方法是“鼻子”影响，而非“口服”没影响。
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