og12~请大侠赐教~谢谢（仅仅三道逻辑题）

小娟子nana · 发表于 2010-3-8 17:37:02

og12-84
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e。
但是我主要不明白的是e的表达，感觉好像有语法错似的。看到these wine makers之前还是明白句子意思的，但是后面居然接着in amounts large enough````天阿。那这句话到底什么意思阿，是说酒里面本身就没有sulfites还是说，酒本身就没有足以产生过敏的数量呢？请大侠赐教~~（最好解说一下这个句子·····

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81.When demand for a factory’s products is high, more money is spent at the factory for safety
precautions and machinery maintenance than when demand is low. Thus the average number
of on-the-job accidents per employee each month should be lower during periods when demand is high than when demand is low and less money is available for safety precautions and machinery maintenance.

Which of the following, if true about a factory when demand for its products is high, casts the most serious doubt on the conclusion drawn above?
A.Its employees ask for higher wages than they do at other times.
B.It s management hires new workers but lacks the time to train them properly.
C.Its employees are less likely to lose their jobs than they are at other times.

D.Its management sponsors a monthly safety award for each division in the factory.
E.Its old machinery is replaced with moderns, automated models.

答案是b。我明白选b的理由，但是对题目有点疑惑。如果没理解错的话，原文的意思应该是“当产品需求高的时候，对预防措施和机器维护会比产品需求低时投入更多。因此，工伤事件在产品需求高时会比产品需求低时要更少，同时预防措施和机器维护的资金也会少。”开头就说“对预防措施和机器维护资金投入就多”为什么最后又说“less money is available for safety precautions and machinery maintenance.”呢？

71.

Roland:The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.

Sharon
:But a normal, moderate level of unemployment is 5 percent, with 1 out of 20 workers unemployed.So at any given time if a person knows approximately 50 workers, 1 or more will very likely be unemployed.

Sharon's argument relies on the assumption that

(A) normal levels of unemployment are rarely exceeded

(B) unemployment is not normally concentrated in geographically isolated segments of the population

(C) the number of people who each know someone who is unemployed is always higher than 90% of the population

(D) Roland is not consciously distorting the statistics he presents

(E) knowledge that a personal acquaintance is unemployed generates more fear of losing one's job than does knowledge of unemployment statistics 答案是b。看了og的解释，仍然还是不明白。这个跟isolated segments of the population有什么关系阿？谢谢指导

答案是b。看了og的解释，仍然还是不明白。这个跟isolated segments of the population有什么关系阿？谢谢指导