13Many 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.Not all forms of sulfite are equally likely to produce the allergic reactions.

this question should be read it carefully

Surely ,I pick D as a first answer.But when I read it tiwce, I notice that it is talking abou the allergic reaction to sulfites not allergic reaction itslef.If the end of the argument is allergic reaction ,the answer should be D.

But if the end of the argument is allergic reaction to sulfits ,the answer should be E which talks about the sulfits.

Great question which should be answered very cafully.

题目强调的是sulfites，E里围绕sulfites讨论，而D里说的是没有sulfites的日子，所以

选E.

当然我们得把5个选项都读了再比较！