Questionnaires can be a simple way to get to know your audience's opinions. Though it is easy to write a questionnaire, you need a lot of skill and experience to write a good one. Luckily, good design skills can be learned in a short time. Keep Your Questionnaire Simple and Visually Attractive Keep your questionnaire short and simple. A short and simple questionnaire is more likely to be completed and returned. It is also important to make your questionnaire as attractive as possible. You should keep the following design elements in mind: Text: Choose a font style. that is easy to read, and make sure the font size is large enough for your respondents to read. Paragraphs: Long paragraphs can be daunting for readers, so try to keep your blocks of text to a handful of lines. White space: Ensure that there is space between questions and sections and don't make margins too small. Keep Questions Brief and Easy to Understand Be brief and direct with your questions. Do not use any unnecessary words and phrases. Brief questions that use simple language are easy to read and understand, so the participants won't find it difficult to fill in the questionnaire. Make Sure Questions Are In the Right Order You should start your questionnaire with general questions and then move to specific ones. Try to avoid jumping back and forth between general and specific questions. Use Open-Ended Questions Properly Open-ended questions mean respondents can answer freely using their own words. They can provide more detailed information, but they take more time and effort to answer and can be more difficult to analyze. You should not use too many open-ended questions in one questionnaire. In a word, taking the time to develop a well-designed and participant “friendly questionnaire will give you useful data that can help you make the right decisions. 21. The questionnaire contains following elements except()  A. test B. paragraph C. address 22. In order to keep your questionnaire visually attractive, you should(). A. choose different font styles in a questionnaire B. write long paragraphs instead of short ones C. leave enough space between questions and sections 23. You should start your questionnaire with()questions and then move to ones. A. general, specific B. specific, general C. short, long 24. What could be the best title for this passage? A. Designing an Effective Questionnaire. B. Questionnaire is the best way to collect data from many people. C. Questionnaire benefits our life. 25. Which of the following statements is NOT true? A. Questionnaire design skills can be learned in a short time. B. Open-ended questions cannot provide more detailed inform. better not use too many open-ended questions in one questionnaire. C. It's worth taking the time to develop a well-designed and participant-friendly questionnaire.