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Today"s policemen in large cities throughout the world
1
on modern inventions to help them in their work. In most places motor scooters and police patrol cars have
2
away with the need to patrol a beat on foot or on horseback. Policemen use telephones,
3
located throughout their districts, to make immediate
4
with headquarters. Radio, television, and computers
5
to speed the work of the modern force. Even boats and helicopters are part of the equipment of metropolitan police department.
Today"s policemen in large cities throughout the world
1
on modern inventions to help them in their work. In most places motor scooters and police patrol cars have
2
away with the need to patrol a beat on foot or on horseback. Policemen use telephones,
3
located throughout their districts, to make immediate
4
with headquarters. Radio, television, and computers
5
to speed the work of the modern force. Even boats and helicopters are part of the equipment of metropolitan police department.
New technical inventions are widely used to
6
crime and speed the
7
of criminal cases. Electronic computers reduce from hours to minutes the time spent in
8
for fingerprints. Witnesses"
9
of a criminal are coded and fed
10
a computer. The machine then sorts through the picture file of known criminals and selects the name and photograph of the most
11
suspect. Lie detectors,
12
such evidence is acceptable, are used to
13
the truth.
A criminal-identification tool in
14
in some places is the image reflector, or "image-maker". This machine
15
a picture of a face
16
a screen. A detective manipulates the machine to
17
the parts of the face to match those of the suspect
18
described by the witnesses. The final picture is then photographed and sent to police in other areas. Sometimes skilled sketch artists employed by police departments
19
oral descriptions into
20
of a suspect.
A．done
B．kept
C．put
D．taken
B．kept
C．put
D．taken
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