She received a(n) ___________ letter threatening to disclose details of his affair if he didn't pay the money. A: perpetual B: anonymous C: noteworthy D: intergral

Which of the following is false? A: Hutong represents an important culture element of the city of Beijing and reflects the culture of middle-class Beijingers. B: Hutong and Siheyuan are the intergral parts of Beijing. C: Hutong has witnessed the history of Beijing. D: Hutong provides a place for people to rehabilitate and breed future generations.