According to the passage, who has the greatest degree of control in an administered system

单项选择题Which of the following is NOT mentioned by the author as a criterion for determining a person's place in a traditional society

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According to the passage, a barter economy can lead to______.

单项选择题The Romans used to sell by auction______.

单项选择题An auction catalogue gives buyers______.