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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.

157.

Which of the following, if true, would most weaken the conclusion above?

(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.

B is the best answer.

The data used to support the conclusion come from the companies’ own records. Since, however, choice B indicates that, as compared with Company O, Company P tends to overstate the number of job-related accidents, choice B weakens the conclusion drawn and is the best answer.

1Choice A does not weaken the conclusion, but is simply a consequence that would be expected given the data. 2The relevance of employees’sicknesses (choice C) cannot be assessed without information about the links, if any, between sickness and job-related accidents. 3Choices D and E both give reasons for predicting a smaller likelihood that any arbitrary employee of Company O will have a job-related accident, and thus support the conclusion.

不明白关于D、E的解释?牛牛指教!谢谢!

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根据og解释理解是涉及出事故的工人越少和机器越少,就表明工人出事故的可能性越小,不知道这样理解对不对

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thanks   a     lot   !!!!

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