单选题 I know it was a difficult task, but I didn't expect that a confident person like you should have ______ on that.

A、 mapped out
B、 set out
C、 chickened out
D、 broken out

【正确答案】 C

【答案解析】[分析] 习语辨析此句意为“我知道这是一项艰巨的任务，但没想到像你这样自信的人也会畏缩。” A．map out拟定计划；B．set out出发，着手，表述；C．chicken out畏缩，因胆怯而罢手； D．break out爆发。选项A、B均与题意矛盾，选项D不对，只有C正确。