题目内容：
The author thinks that crime is increasing in cities because_______.
A．[ A ] criminals are difficult to trace in large populations B．[ B ] people do not communicate with their neighbors
C．[ C ] people feel anonymous there *^考试大^o^在线^*^考试中心ω
D．[ D ] the trappings of success are attractive to criminals
参考答案：
答案解析：