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The observer mode defines a one-to-many dependency relationship, allowing multiple observer objects to monitor a certain topic object at the same time. When the state of this topic object changes, all observer objects will be notified so that they can automatically update their behaviors. The specific structure diagram is as follows:VineyardUnderstanding cancer is a chronic disease, from the perspective of medical psychology, it has played a comforting role for many cancer patients. This kind of comfort is not deception, but telling the truth, which is in line with science and reality. It was once widely publicized that cancer was a terminal illness and was sentenced to death. In the countryside, the disease is called "single word", which is very taboo. Practice has proved that this attitude is unscientific. The difference between human beings and animals is that human beings are conscious animals. Only when consciousness remains normal can the activities of human life be normal. Consciousness dominates the activities of life. If consciousness is disordered, the activities of life will fall into chaos. We publicize that cancer will lead to death. The fact is that it is creating cancer terror, creating consciousness disorder and providing cover for treatment. On the contrary, it will increase the activity ability of cancer and destroy the self-organized anti-cancer life-supporting activities of the human body.It is very transparent green after drying.UnicomWe begin experimenting the effect of mixing blue dye with the leaf-based solution.This is the third time Moon Jae in has personally gone to the cinema to watch the movie since taking office. In August this year, Moon Jae in watched the Kwangju Democratization Movement "Taxi Driver" and in October this year, he watched the movie "MISSING", which reflects women's issues, at the Busan International Film Festival.