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题库 / Prep2007E1-CR-63
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?
The employees of Company P lost more time at work due to job-related accidents than did the employees of Company O.
Company P considered more types of accidents to be job-related than did Company O.
The employees of Company P were sick more often than were the employees of Company O.
Several employees of Company O each had more than one job-related accident.
The majority of job-related accidents at Company O involved a single machine.
错选D
【关键：According to records maintained by each company】
---by ruqi
P: P,O有相同数量的员工，每周工作小时数一样。O公司的员工去年的事故记录少于P公司的事故记录-> C: O公司员工比P公司员工更少可能发生事故
choice b, P公司将更多的事故类型纳入job-related事故。correct，说明两公司的员工遭遇同样的事故，O没有记录下来，但P记录下来了。导致从记录上看O的事故更多，但实际经历的事故并不一定是O比P少
choice d, O公司的几个员工有不止一起的事故，用部分代表了总体，不能说明任何问题 。做题时觉得这说明了个人发生事故的可能性高，只关注到可能性高，没关注到体现的是个人。
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