第32题: [单项选择]The passengers on the plane have been held ______ for ten hours before the police had a firm control over the hijackers. A. captive B. capsule C. cavity D. casualty 参考答案:A 答案解析:警察完全控制了劫机犯的时候,机上的乘客被扣为人质已经整整10个小时了。本题是考查名词的词义辨析。 captive“俘虏”,词组是hold sb.captive;capsule“胶囊,密封舱”;cavi