单选题 The officer asked for a detailed________of what happened at the time of the accident.
【正确答案】 A
【答案解析】本题考查名词的辨析。A项为“解释：说明”；B项为“宣布”；C项为“表达；表情”；D项为“印象”，根据句意，警察想了解事故的有关情况。故选A。