GWD-06-Q14

qingqing6989

GWD-8-Q14: GWD-2-11
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.

为什么选E？不选D
请哪位大侠用中文解释下，谢谢。

qingqing6989

谢谢

bdsjb116

OG 12第84题

官方解释是
Argument Construction
Situation People who are allergic to certain sulfi tes can avoid risking an allergic reaction by
drinking wine from one of the several producers that does not add sulfi tes.
Reasoning On what assumption does the argument depend? Drinking wine to which no sulfi tes have
been added will not prevent exposure to sulfi tes if, for instance, sulfi tes occur naturally in
wines. In particular, if the wines that do not have sulfi tes added have sulfi tes present
naturally in quantities suffi cient to produce an allergic reaction, drinking these wines will
not prevent an allergic reaction. Th e argument therefore depends on assuming that this is
not the case.
A Th e argument does not require this because the conclusion does not address allergic reactions to
substances other than sulfi tes.
B Th e argument specifi cally refers to “certain sulfi tes” producing allergic reactions. It is entirely
compatible with certain other forms of sulfi tes not producing allergic reactions in anyone.
C Th is is irrelevant. Th e argument does not claim that one can avoid having an allergic reaction to
sulfi tes from any source just by restricting one’s wine consumption to those varieties to which no
sulfi tes have been added.
D Once again, the argument’s conclusion does not address allergic reactions to substances other
than sulfi tes in wine.
E Correct. Th e argument relies on this assumption.
Th e correct answer is E.

之前的讨论帖
http://forum.chasedream.com/GMAT_CR/thread-467290-1-1.html?SearchText=og%2012%2084
http://forum.chasedream.com/GMAT_CR/thread-431741-1-1.html?SearchText=og%2012%2084

这题我也做错了。后来用assump的取非方法带入
D there are some substances that give rise to an allergic reaction. 咋一看原文结论的确不成立
但细看结论是people who would like to drink wine but are allergic to sulfitescan drink wines produced by these wine makers without risking an allergic reaction to sulfites.

说酒里其他物质可能导致过敏，但并不表明对sulfites过敏的人一定会对其他物质过敏。对结论是无关选项。