Sensation refers to the reflection of the basic attributes of objective things produced by objective stimuli acting on sensory organs through the information processing activities of the brain. As the primary stage of the cognitive process, perception provides the most basic raw materials for perception and other complex cognitive processes. The types of sensations can be divided into two categories: external sensations and internal sensations according to the source of their information. External sensations include vision, hearing, taste, smell, and skin sensation. Internal sensations reflect the state of the body itself, including movement, balance and body. feel. Based on the above definitions, Which of the following statements are felt:. ['After Xiaoming came home from school, he saw a plate of braised pork on the table.', 'Xiaoming came home from school and heard that a very nice song was playing on the radio.', 'After Xiaoming came home from school, he felt that his room had just been cleaned by his mother.', 'After school returns home from school, it feels very cold.']