What stress reducer was mentioned in terms of sound in this chapter?
举一反三
- What does episodic acute stress mean in this chapter?
- What kinds of stress have been interpreted in this chapter? （ ）
- In the last session of this chapter, two suggestions to reduce stress are recommended, what are they? （ ）
- Apart from providing collection of books, what other functions of public libraries, especially the community libraries, are mentioned in this chapter? （ ）
- How many types of culture mentioned in this chapter?