题目：
多选题
What are the suggestions on teaching pronunciation?
- A. It is helpful to do articulation practice more than once
- B. Bring variety to the classroom
- C. Vary the criteria of "good" in pronunciation practice to give students confidence.
- D. Move around the classroom when doing choral practice.
- E. Use hands and arms to conduct choral pronunciation practice
- F. Do not rely on explanations. Make full use of demonstration. Try to use visual aids
- G. Use individual, pair，group and whole class practice formats to creaｔe a pleasant，relaxed，and dynamic classroom
- H. The main criteria for good pronunciation are consistency， intelligibility， and communicative efficiency.
答案：
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