大全I-18 为什么是A

ddwantsmba

大全-Ⅰ-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.

bettytons

外部咨询机构说：自从1987，参加咨询机构会议的公司收入比不参加的公司收入低。因此这些会议浪费钱。
问削弱
A在1987年之前收入最高的公司是唯一不参加会议的公司。因此在1987之后，参加会议和不参加的公司对比双方组成是不均衡的，因为还包括之前收入最高的公司，因此不能说明会议不好。
对这个题理解不是太深，只能给楼主个思路，望大牛指点

horuxds

这道题需要理解的是什么样的公司会派人参加这样的sales seminars。A很犀利的指出，那些本来销售就很好的公司没必要派人参加这种sales seminar，参加的都是销售有问题的公司。

这个跟我们上学时哪些人需要参加补习班一个道理。你不能因为参加完后成绩还不如人家没参加的就说这个补习班没价值，关键是要跟你参加补习班之前比，而不是跟那些本来就比你高很多的尖子比。能从平均分50分提高到70分就已经是胜利了。

ddwantsmba

THanks a lot!!!

sylvia1012

这道题需要理解的是什么样的公司会派人参加这样的sales seminars。A很犀利的指出，那些本来销售就很好的公司 ...
horuxds 发表于 2010-7-1 06:38

有道理