Phobia: refers to the patient's strong fear of a specific object or situation or when dealing with people, and take the initiative to avoid this anxiety. According to the above definitions, Which of the following are phobias:. ['Xiaohong has been afraid of bugs since she was a child. She hides behind her parents when she sees the bugs. Now Xiaohong is 20 years old and still afraid of bugs, she will scream and jump when she sees them.', "The construction worker Xiao Zhang fell from a high fence once and caused a fracture. After he was well, he was afraid to go to a high place and changed his job. He moved his home to the first floor and didn't even dare to watch TV. Shows about aerial work.", 'Yu Yanyan is particularly afraid of the dark. When it is dark, she must hurry home, unless she is in a night city with a lot of lights. If she needs to be in a dark place, someone must accompany her before she dares to go.', "Liu Ye is a very introverted person, who blushes at the sight of a stranger. If the opposite sex is more serious, he can't even speak, so he is particularly afraid of social occasions. She is extremely nervous at every organizational event."]