【题目】All the policemen have been trained to ________ themselves against the sudden attacks.
A. fightB. dressC. defendD. balance
在线课程【答案】C
【解析】
考查动词词义辨析及动词短语。句意：所有的警察都已经被训练保护自己不受突然攻击的伤害。A. fight斗争；B. dress打扮；C. defend保护；防守；D. balance平衡；动词短语defend sb against sth意为“保护某人免受……的伤害”，符合本句上下文语境。故C项正确。