以下哪项疾病不适用于牵引治疗
A．椎间盘突出症
B．脊柱小关节紊乱
C．关节挛缩
D．寰枢关节半脱位
E．脊椎结核
参考答案：E
A lot of people find it useful to have a phrasebook when they travel to a country _____they don’t know the language．
A．where
B．when
C．why
D．which
普遍保障制度
