第23题: [单项选择]During a period of protracted illness, the sick can become infirm, ______ both the strength to work and many of the specific skills they once possessed. A. regaining B. denying C. pursuing D. losing 参考答案:D 答案解析:(lose失去)。句意为:身患痼疾,病人的身体就会虚弱,既丧失工作能力又失去许多已有的特殊技能。A.regain恢复;C.deny否认;D.pursue追求。