2. 外语
  3. In many ways, though, definition of such skills is quite unnecessary for an analysis of policing. It is really most unlikely tha

In many ways, though, definition of such skills is quite unnecessary for an analysis of policing. It is really most unlikely tha

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问题     In many ways, though, definition of such skills is quite unnecessary for an analysis of policing. It is really most unlikely that the average police officer will ever in his career perform or even
    witness those detective skills that he has enjoyed in countless TV productions. The reason for this is simply that the vast majority of crimes are usually either very likely to be solved by routine investigation or they are very unlikely to be solved at all. Fortunately, the clear-up rate for serious crimes tends to be very  high. Zander (1979) has shown why. In his study of old bailey cases, the identity of the defendant(被告) seems to have been reasonably clear in 87% of cases. Morgan (1980 and ongoing) has shown that well over 92% of crimes known to the police are discovered by the public who provide the majority of decisive information. In Morgan’s study, crimes that were "solved" contained in their crime files over dwice the amount of qualitative information as crimes that were not "solved". The various bits of information in the crime files were each rated by experienced police investigators on a Likert scale of value in terms of probability of detection, "solving" of the crime. In this, where information was. provided by the public during a police interview, the information was believed to the police "since it was felt that in an interview genuine police skills are involved in the collection of information." Evidently this method can be justified thus, but will necessarily overestimate the police role. Nevertheless, in this analysis of crime files it was shown that in cases where crimes were solved, the public still provided nearly twice the amount of information as the police.
It is very likely that the part previous to this passage is about ______.
选项 A、police skills
B、the role of informations
C、TV productions
D、studies of crime files
答案A
解析 题干中 the part previous to this passage 指此段选文的前面部分，亦即上文。要知道上文大概与何内容有关，可从此段选文的首句或首段着手。因为此文首句或首段与上文靠得最近，内容方面往往有承上启下的关系，所以常常其中有上文用过的词语，或者有与上文有、相近的内容。
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