单选题 The real detective lives in "an unpleasant moral twilight" because ______.
【正确答案】 C
【答案解析】该段最后两句话是全段重点can hardly ever do both.Most of the time some of them have to break the rules in small ways.他们很难同时兼顾这两条。很多时候他们不得不犯些小错来达到目标。