GWD题

Many people suffer an allergic reaction to certain sulfites, including those that are commonly added to wine as preservatives.  However, since there are several wine makers who add sulfites to none of the wines they produce, people who would like to drink wine but are allergic to sulfites can drink wines produced by these wine makers without risking an allergic reaction to sulfites.

Which of the following is an assumption on which the argument depends?

A.       These wine makers have been able to duplicate the preservative effect produced by adding sulfites by means that do not involve adding any potentially allergenic substances to their wine.

B.        Not all forms of sulfite are equally likely to produce the allergic reactions.

C.        Wine is the only beverage to which sulfites are commonly added.

D.       Apart from sulfites, there are no substances commonly present in wine that give rise to an allergic reaction.

E.        Sulfites are not naturally present in the wines produced by these wine makers in amounts large enough to produce an allergic reaction in someone who drinks these wines.

答案是D,题目里不是已经写明是对sulfites的过敏吗?怎么还要假设其他会过敏物?我觉得应该是 E  吧

试着回答一下

看原文第一句: S-->人过敏

原文结论：since there are several wine makers who add sulfites to none of the wines they produce, people who would like to drink wine but are allergic to sulfites can drink wines produced by these wine makers without risking an allergic reaction to sulfites.        酒里没有加Ｓ--->对S过敏的人去喝这种酒没有危险,(即没有S-->人不会过敏)

原命题成立,逆命题不一定成立的呀,所以中间肯定有个Assumption

答案D,排除他因, 没有其他过敏物在这酒中会导致人过敏的, 取非一下,就是酒中有其他过敏物,然后导致人过敏,削弱原文了呀!

至于你说的E, 原文已经说酒里没加S了,所以Sulfites are not naturally present in the wines produced by these wine makers 就根本不在讨论范围内了,无关啊

首先谢谢幽幽sally的详细解答.

可我还是原来的疑问:问题最后两个字to sulfites不是说是对S的过敏吗?

那对其他物质的过敏应该排除在外了吧?!

哎!开始晕了~~

又仔细的看了看,觉得你说的对,不过很奇怪哦,GWD上给的答案是D,但是NN们的帖子上给的是E

现在坚定E

A ，D 无关,因为结论是讲对S的过敏。而D说只说过敏，没具体说对S的过敏。

B 也是无关,文章没有说S 有什么FORM

C也好排除的

所以选E了,就是S 的量上的问题，因为无论如何都得加这个S 的

不知道这次分析的有道理没?

呵呵,谢谢楼主,在这题深深体会了什么叫有关和无关

嘿嘿，应该感谢你！！疑难问题终于解决了～～～