单选题 A state of emergency had been in force since the emperor was overthrown.
A. overtaken B. overrun C. overturned D. overdrawn

【正确答案】 C
【答案解析】[解析] 选C项overturn“毁灭,颠覆”和overthrown“颠覆”为同义词。其他选项分别为:overtake“赶上,超过”、overrun“泛滥,侵占”和overdrawn“透支”。