| 新加一题: 
 
 Which of the following most logically completes the argument? 
   
 A significant number of Qualitex Corporation’s department heads are due to retire this year.  The number of employees other than current department heads who could take on the position of department head is equal to only about half of the expected vacancies.  Oualitex is not going to hire department heads from outside the company or have current department heads take over more than one department, so some departments will be without department heads next year unless Qualitex ______. 
   
 
 promotes some current department heads to higher-level managerial positions
 raises the salary for department heads
 reduces the number of new employees it hires next year
 reduces the average number of employees per department
 reduces the number of its departments
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