135. In a new police program, automobile owners in some neighborhoods whose cars are not normally driven between 1 A.M. and 5 A.M. can display a special decal in the cars’ windows and authorize police to stop the cars during those hours to check the drivers’ licenses. The theft rate for cars bearing such decals is much lower than had been usual for cars in those neighborhoods. If it is concluded from the statements above that automobile theft has been reduced by the program, which one of the following would be most important to answer in evaluating that conclusion? (A) Are owners who are cautious enough to join the program taking other special measures to protect their cars against theft? (B) In how many neighborhoods is the police program operating? (C) Are cars in neighborhoods that are actively participating in the program sometimes stolen during daylight hours? (D) Will owners who have placed decals on their cars’ windows but who find it necessary to drive between 1 A.M. and 5 A. M. Be harassed by police? (E) Are the neighborhoods in which the program has been put into effect a representative cross section of neighborhoods with respect to the types of automobiles owned by residents? ========================== （A） 评估题正是加强和削弱的结合，需要找到一个事实，这个事实的成立与否对原命题或是加强，或是削弱。想想，所有的评估题都是这样。 本题中应该是比较典型的判断它因是否存在类型，这也是评估题中出现比较多的一种情况，因为它因存在即削弱，它因不存在即加强。清楚这一点，以后应该不会有问题。
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发表于 2003-10-21 14:07:00
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