2. 外语
  3. Today’s policemen in large cities throughout the world【C1】______on modem inventions to help them in their work. In most places m

Today’s policemen in large cities throughout the world【C1】______on modem inventions to help them in their work. In most places m

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问题     Today’s policemen in large cities throughout the world【C1】______on modem inventions to help them in their work. In most places motorcycles and police patrol(巡逻)cars have【C2】______away with the need to patrol a beat on foot or on horseback.  Policemen use telephones,【C3】______located throughout their districts, to make immediate【C4】______with headquarters.  Radio, television, and computers【C5】______to speed the work of the modern force. Even boats and helicopters are part of the【C6】______of metropolitan police departments.
    New technical inventions are widely used to【C7】______against crime and speed the solution of criminal cases. Electronic computers【C8】______from hours to minutes the time spent in searching for fingerprints. Witnesses【C9】______of a criminal are coded and fed into a computer. The machine then【C10】______through the picture file of known criminals and【C11】______the name and photograph of the most likely suspect. Lie detectors,【C12】______such evidence is acceptable, are used to【C13】______the truth.
    A criminal-identification tool in【C14】______in some places is the image reflector, or "image-maker". This machine【C15】______a picture of a face【C16】______a screen. A detective operates the machine to【C17】______the parts of the face to match those of the suspect【C18】______described by the witnesses. The final picture is then【C19】______and sent to police in other areas. Sometimes skilled sketch artists employed by police departments【C20】______oral descriptions into drawings of a suspect.
【C18】
选项 A、when
B、who
C、as
D、while
答案C
解析 结构衔接题。根据本句的结构可知，空格后的分词短语作定语修饰 those (the parts of the face) of the suspect。故此空格处为修饰分词短语的副词，as作副词时，有“作为，正如”之意，如：man us described by scientists (科学家所描述的人类)。
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大学英语四级

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