It is common for normal children to focus on one or two things at a time, such as learning the jingle in an advertising film, or eating cereal with some kind of Mickey Mouse bowl. Generally, these temporary fanatics will eventually pass. Some normal children don't like to show enthusiasm and don't like to hold people, which does not mean that they must have autism. According to this text, what can be inferred is:. ['Autistic children like clink or Mickey Mouse.', 'Children who do not like to be hugged are prone to autism.', 'Abnormal concentration and apathy are manifestations of autism.', 'Advertising videos may be a cause of autism.']