Which of the following is NOT the proper Chinese equivalent for

Which of the following is NOT the proper Chinese equivalent for its English item?（ ）
A、吃软不吃硬——open to persuasion, but not to coercion
B、布衣素食——coarseclothesandsimplefare
C、打小报告——beareporter
D、没词儿——besuckforananswer
【正确答案】：C
【题目解析】：本题主要考查《汉英词典》修订版。be an informer意为打小报告。答案为C。