The police say there is a $50 000 for any information that helps them find the killer.A.

问题补充：

The police say there is a $50,000 for any information that helps them find the killer.

A. income

B. fee

C. bill

D. reward

答案：

A. income

B. fee

C. bill

(答案→)D. reward

解析：考查名词辨析：A. income收入，B. fee费用，C. bill账单，D. reward悬赏，赏金，句意是；警察说任何提供有助于抓到杀人犯的信息的人都有５万的赏金。选Ｄ。