The occupations in the questionnaire mainly include:

1, professionals (such as teachers/doctors/lawyers, etc.)

2, service workers (such as catering waiters/drivers/salespeople, etc.)

3, freelancers (such as writers/artists/photographers/tour guides, etc.)

4, workers. According to the theme, the topic is proposed from the reality, the purpose of the question is clear, the focus is prominent, and there is no dispensable problem.

2. The structure is reasonable and logical. The arrangement of questions should have a certain logical order, which conforms to the thinking procedure of respondents. Generally speaking, it is easy before difficult, simple before complicated, concrete before abstract.

3, easy to understand. The questionnaire should make the respondents clear at a glance and be willing to answer truthfully. The tone of the questionnaire should be friendly, in line with the respondents' understanding and cognitive ability, and avoid using technical terms. Take some skills to investigate sensitive questions, make the questionnaire reasonable and answerable, avoid subjectivity and suggestion, and avoid the distortion of answers.

4. Control the length of the questionnaire. The time to answer the questionnaire is controlled at about 21 minutes, and neither a question is wasted nor a question is missed in the questionnaire.

5. It is convenient for data checking, sorting and statistics.