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During the production of orange juice, Calcium is sometimes added as a nutritional supplement. Certain individuals are allergic to calcium, and drinking orange juice fortified with cacium can cause an allergic reaction. Fortunately, some types of orange juice do not have calcium added during production, so calcium-allergic individuals can drink these orange juices without inducing an allergic reaction to calcium.
which of the following is an assumption on which the argument depends?
A there are no other substances besides calcium that are typically present in orange juice that cause allergic reactions
C Calcium-allergic individuals cannot ingest any calcium without having an allergic reaction
我的问题是:A选项:因为原文中没说是不是饮料中是否只会产生Ca过敏,所以如果对Ca过敏的人还对其他物质过敏,那么同样会引起过敏现象---所以文中将不含其他过敏物质作为assumption,刚好限制弥补了这个漏洞。
C选项:选项中说Ca过敏的人一定会产生反应--将其作为前提,所以才能得出结论,ca过敏的人只能和不添加Ca的橙汁→隐约感觉不是必不可少的条件,所以不是Assumption,但是谁能解释一下,为什么C不行?
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