单选题
2分
He was fired because of his __________ refusal to follow orders.
参考答案: A
参考解析: 考查形容词辨析。obstinate“固执的,顽固的”,obstructive“妨碍的”,obedient“服从的”,obsessive"着迷的,迷恋的”。句意为“他因固执地拒绝遵守命令而被解雇了”。故选A。