42.       
　　 The author concludes that a postage-stamp price increase is needed to reduce the deterioration of the postal service. The author reasons that raising the price of stamps will accomplish this goal because it will generate more revenue, thereby eliminating the strain on the system. The author further reasons that a price increase will also reduce the volume of mail, thereby improving the morale of postal workers. The reasoning in this argument is problematic in three respects.来源：考试大

      The main problem with the argument is the author's mistaken assumption that eliminating strain on the system and improving employee morale are mutually achievable by way of an increase in stamp prices. A price increase will generate more revenue only if the volume of mail remains constant or increases. But, if the volume of mail increases or remains constant, worker morale will not be improved. On the other hand, if the price increase reduces the volume of mail, revenuesmay decrease, and the strain on the system will not be eliminated. Consequently, eliminating the strain on the system and improving the morale of the workers cannot both be achieved by simply raising the price of postage stamps.

      Secondly, the author's conclusion that the proposed price increase is necessary to reduce deterioration of the postal service relies on the assumption that no other action would achieve the same result. However, the author provides no evidence to substantiate this assumption. It is possible, for example, that careful cost-cutting measures that do not decrease worker morale might achieve the same goal. It is also possible that other revenue-enhancing measures that do not undermine employee morale are available.
来源：考试大
      Thirdly, the author unfairly assumes that reducing mail volume and increasing revenues will improve employee morale.This is not necessarily the case. It is possible that employee morale is materially improved only by other means, and that additional revenues will not be used in ways that improve morale. It is also possible that a decrease in mail volume will result in a reduction of the size of the labor force, regardless of revenues, which in turn might undermine morale.来源：考试大

      In conclusion, the author's proposed solution to the problem of the deterioration of the postal service will not work. Raising postage-stamp prices cannot bring about both of the outcomes the author identifies as being necessary to solve the problem. Before we can accept the argument, the author must modify the proposal accordingly and must provide more information about the relationship between employee morale and mail volume.