21. The amount of electricity consumed in Millville on any day in August is directly proportional to peak humidity on that day Since the average peak humidity this August was three points higher than the average peak humidity last Ausgust, it follows that more energy was consumed in Millville this August than last August

　　Which one of the following arguments has a pattern of reasoning most similar to the one in the argument above?

(A) The amount of art supplies used in any of the Aesthetic¹ Institute s 25 　　classes is directly proportional to the number of students in that class. 　　Since in these classes the institute enrolled² 20 percent more students 　　overall last year than in the previous year mort art supplies were used in 　　the institute s classes last year than in the provious year.
(B) The number of courses in painting offered by the Aesthetic Institute in any 　　term is directly proportional to the number of students enrolled in the 　　institute in that term. But the institute offers the same number of courses in 　　sculpture each term. Hence, the institute usually offers more courses in 　　painting than in seulpture each term. Hence, the institute usually offers 　　more courses in painting than in sculpture.
(C) The number of new students enrolled at the Aesthetic Institute in any given 　　year is directly proportional to the amount of advertising³ the institute has 　　done in the previous year. Hence, if the institute seeks to increase its 　　student body it must increase the amount it spends on advertising
(D) The fees paid by a student at the Aesthetic Institute are didirectly 　　proportional to the number of classes in which that student enrolls⁴. Since 　　the number of students at the Aesthetic Institute is increasing, it follows 　　that the institute is collecting a greater amount in fees paid by students 　　than it used to
(E) The number of instructors⁵ employed by the Aesthetic Institute in any term is 　　directly proportional to the number of classes offered in that term and also 　　directly proportional to the number of students enrolled at the institute 　　Thus, the number of classes offered by the institute in any term is directly 　　proportional to the number of students enrolled in that term.

22. Letter to the editor: After Baerton s factory closed, there was a sharp increase in the number of claims field for job-related injury compensation by the factory s former employees, Hence there is reason to believe that most of those who filed for compensation after the factory closed were just out to gain benefits they did not deserve, and filed only to help them weather their job loss.

　　Each of the following, if true, weakens the argument above EXCEPT:

(A) Workers cannot file for compensation for many job-related injuries, such as 　　hearings loss from factory noise, until they have left the job.
(B) In the years before the factory closed, the factory s managers dismissed 　　several employees who had filed injury claims.
(C) Most workers who receive an injury on the job file for compensation on the 　　day they suffer the injury.
(D) Workers who incur⁶ partial disabilities due to injuries on the job often donot 　　file for compensation because they would have to stop working to receive 　　compensation but cannot afford to live on that compensation alone.
(E) Workers who are aware that they will soon be laid off from a job often 　　become depressed⁷, making them more prone⁸ to job-related injuries.

23. Historians of North American architecture who have studied early nineteenth-century houses with wooden floors have observed that the boards used on the floors of bigger houses were generally much narrower than those used on the floors of smaller houses. These historians have argued that, since the people for whom the bigger houses were built were generally richer than the people for whom the smaller houses were probably once a status symbol, designed to proclaim the owner s wealth.

　　Which one of the following, if true, most helps to strengthen the historians argument?

(A) More original floorboards have survived from big early nineteenth-century 　　houses than from small early nineteenth-century houses than from small 　　early nineteenth-century houses.
(B) In the early nineteenth century, a piece of narrow floorboard was not 　　significantly less expensive than a piece of wide floorboard of the same 　　length.
(C) In the early nineteenth century, smaller houses generally had fewer rooms 　　than did bigger houses.
(D) Some early nineteenth-century houses had wied floorboards near the walls 　　of each room and narrower floorboards in the center, where the floors were 　　usually carpeted.
(E) Many of the biggest early nineteenth-century houses but very few small 　　houses from that period had some floors that were made of materials that 　　were considerably⁹ more expensive than wood, such as marble.

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