gre argument 241题目：
The following appeared in a memo at the XYZ company.
"When XYZ lays off employees, it pays Delany Personnel Firm to offer those employees assistance in creating resumés and developing interviewing skills, if they so desire. Laid-off employees have benefited greatly from Delany's services: last year those who used Delany found jobs much more quickly than did those who did not (1). Recently, it has been proposed that we use the less-expensive Walsh Personnel Firm in place of Delany. This would be a mistake because eight years ago, when XYZ was using Walsh, only half of the workers we laid off at that time found jobs within a year (2, 3, 4, and 5). Moreover, Delany is clearly superior, as evidenced by its bigger staff (7) and larger number of branch offices (6). After all, last year (10) Delany's clients took an average of six months to find jobs, whereas Walsh's clients took nine (8, 9)."
(1)The author unfairly attributes the successful employment result of the laid-off employees who used Delany to Delany’s assistance.
(2)The fact that only half of the laid-off workers found jobs within a year may not result from ineffectiveness of Walsh.
(3)Many factors could explain the differences between the employment results of using each company.
(4)Without any comparative data, we cannot determine if the employment result of workers who use Walsh eight years ago are poor.
(5)Many conditions would have changed during the past eight years.
(6)The size of staff and number of branch offices do not necessarily indicate the quality and effectiveness of a company’s service.
(7)A bigger staff may just indicate that the efficiency at Delany is lower.
(8)There is no significant difference between finding job within six months and within nine months.
(9)Without detailed description of jobs found by Delany’s clients and Walsh’s clients respectively, and without more information about their clients, we cannot evaluate which company is more effective.
(10)A single year's placement statistics hardly suffices to draw any firm conclusions.
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