● (43) 设计模式允许一个对象在其内部状态改变时改变它的行为。下图为这种设计模式的类图,已知类State为抽象类,则类 (44) 的实例代表了Context对象的状态。 (43) A. 单件(Singleton) B. 桥接(Bridge) C. 组合(Composite) D. 状态(State) (44) A. Context B. concreteStateA C. Handle D. State
【简答题】One man was to meet his wife downtown and spend some time shopping with her. He waited 21 for 15 minutes. Then he waited impatiently for 15 minutes more. After that, he became 22 . When he saw a ...