单选题 According to the passage, policemen spend most of their time and efforts______.

A、 patrolling the street, rain or shine
B、 tracking and arresting criminals
C、 collecting and providing evidence
D、 consulting the rules of law

【正确答案】 C

【答案解析】[解析] 细节题。本题问的是：警察把大部分时间和精力花在______。根据第5段“Having made an arrest， a detective really start so work． He has to prove his case in court and to do that he often has to gather a lot of different evidence”可知在逮捕后，侦探的工作才刚开始。他要在法庭上证明案件，因此要收集很多证据，故选C)。