单项选择题
Which of the following is NOT mentioned by the author as a criterion (标准) for determining a person's place in a traditional society（）
A．Family background. B．Age. C．Religious belief. D．Custom.
单项选择题 In the second paragraph, the word "real" in "real goods" could best be replaced by which of the following（）
单项选择题 What is the main subject of the passage（）
单项选择题 Which of the following statements is true according to the passage（）
