单项选择题
A.1946
B.1947
C.1948
D.1949
单项选择题 There are about 130 prison establishments in England and Wales and some 20 in Scotland,many of which were built in the()century.
单项选择题 Police officers are not allowed to join()or to go on strike.
单项选择题 There are()police forces in England and Wales,8 in Scotland and one (the Royal Ulster Constabulary)9n Northern Ireland.