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说明文 A (2017·安徽蚌埠第三次质检) In Britain,people have different attitudes to the police.Most people generally 1 them and the job they do—although there are certain people who do not believe that the police 2 have the power that they do. What does a policeman actually do?It is not 3 job to describe.After all,a policeman has a number of jobs in 4 .A policeman often has to control traffic,either 5 foot in the center of a town,or in a police car on the roads.Indeed,in Britain,he might be in the Traffic Police and spend all,or a lot of,his time 6 up and down main roads and motorways(高速公路).A traffic policeman has to help keep the traffic moving,stop 7 drivers and help when there is an accident. A policeman has to help keep the 8 ,too.If there is a fight or some other disturbance,we 9 the police to come and restore(恢复) order.And they often have to 10 the situation at great risk to their own 11 . We expect the police to solve crimes,of course,so an ordinary policeman, 12 he is not a detective,will often have to help 13 and arrest criminals. And 14 do well when there is an emergency—an air crash,a 15 ,a road accident,or a robbery?We call the police. 16 a policeman has to be 17 to face any unpleasant emergency that may happen in the 18 world. | 
