The doctors are very much worried about the ______ of the patient's condition after operation.

【正确答案】 C

【答案解析】 名词词义辨析。disposition“处置，性情”；deliberation“审议，考虑，从容，熟思”；deterioration“恶化，退化”；diversion“消遣，转移注意力”。句意：医生非常担心病人手术后情况会恶化。故答案为C。