单项选择题
The writer believes the problems of chaos and noise will most probably only be solved by（）
A．the students themselves. B．the students' parents. C．the college authorities. D．the newspaper.
单项选择题 In the animal kingdom the struggle for existence（）
单项选择题 According to the author which of the following is inevitable（）
单项选择题 Etiquette as an art of gracious living is quoted as a feature of which country（）
