41.A.a few B.many C.thousand D.thousands
40.A.quite B.very C.much D.more
39.A.chances B.openings C.occasions D.possibility
38.A.to B.of C.more D.in
37.A.expected B.hoped C.required D.sent
36.A.it is B.it C.it to be D.was
54.A “extremely”在此处意思是“非常,极端”,此处是赞扬警察的工作非常好。
53.B in the modern world:在现代社会里。
52.C 根据上文,面对emergency,警察随时随地都要“prepared”。另外,要注意词组“be prepared do to something”。