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大全中的一道题~实在是百思不得其解啊~希望各位路过的能给小弟讲解一下噢

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楼主
发表于 2009-7-17 11:24:00 | 只看该作者

大全中的一道题~实在是百思不得其解啊~希望各位路过的能给小弟讲解一下噢


    

18.   Critics of sales seminars
run by outside consultants point out that since 1987, revenues of vacuum
cleaner companies whose employees attended consultant-led seminars were lower
than revenues of vacuum cleaner companies whose employees did not attend such
seminars. The critics charge that for vacuum cleaner companies, the sales
seminars are ill conceived and a waste of money.


    

Which of the following, if true, is the
most effective challenge to the critics of sales seminars?


    

(A) Those vacuum cleaner companies whose sales were highest
prior to 1987 are the only companies that did not send employees to the
seminars.


    

(B) Vacuum
cleaner companies that have sent employees to sales seminars since 1987
experienced a greater drop in sales than they had prior to 1987.


    

(C) The cost of vacuum cleaner sales seminars run by
outside consultants has risen dramatically since 1987.


    

(D) The poor
design of vacuum cleaner sales seminars is not the only reason for their
ineffectiveness.
A


    

(E) Since 1987,
sales of vacuum cleaners have risen twenty percent.

答案是A,为什么呢?我怎么觉得好像没有特别正确的选项的啊~希望有人为我讲解一下,谢啦!



沙发
发表于 2009-7-17 11:43:00 | 只看该作者
这道题的意思是说,自从1987年以后,那些送员工去seminar的公司的revenue要比没送员工去seminar的公司的revenue低。所以文中得出结论说seminar是个坏东西。问以下哪项削弱了结论。文中的逻辑漏洞在于,seminar只是一个伴随状况,未必是真正的原因。A选项说的是只有那些在1987年之前就销售最好的公司才没送员工去seminar。就是在大家都没有送员工去seminar的时候,那些公司原本就实力比较强了。在不受到seminar这个因素的干扰情况下,情况依然相同。所以可以削弱原文"seminar影响revenue"这个错误结论。
板凳
 楼主| 发表于 2009-7-17 12:45:00 | 只看该作者
恩,懂了~多谢噢
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