[His client made a ______ about his carelessness in dealing with the case., A．complaint, B．claim, C．decision, D．reservation]
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答案：[A难词辨义。原句意为：他的委托人抱怨他在处理该案件时的粗心大意。complaint意为“抱怨，投诉”，与题意吻合。claim意为“要求，认领”；decision意为“决定”；reservation意为“(旅馆房间、剧院座位等的)预订”。]
