标题: 求助PP上的一道题 [打印本页] 作者: 欧阳小西 时间: 2011-3-28 17:58 标题: 求助PP上的一道题 Companies O and P each have the same number of employees who work the same number of hours per week. According to records maintained by each company, the employees of Company O had fewer job-related accidents last year than did the employees of Company P. Therefore, employees of Company O are less likely to have job-related accidents than are employees of Company P.
Which of the following, if true, would most weaken the conclusion?
(A) The employees of Company P lost more time at work due to job-related accidents than did the employees of Company O.
(B) Company P considered more types of accidents to be job-related than did Company O.
(C) The employees of Company P were sick more often than were the employees of Company O.
(D) Several employees of Company O each had more than one job-related accident.
(E) The majority of job-related accidents at Company O involved a single machine.
答案是B。 麻烦NN解释下题目和答案，，， 作者: yanxihua00 时间: 2011-3-28 18:58
A。C，E明显无关，题目中问的是有关工伤的次数问题比较，D为strengthen.B为weaken,原因在于：就算两公司的员工一样，可是与工作相关的工伤次数不一样，也不能比较啊，of course it is weaken,不知道你觉得是不是这个道理？》