Our schools, according to the passage, _______________.

单项选择题It can be inferred from the passage that the author values good literature primarily for its ability to_________________.

单项选择题According to the passage, a barter economy can lead to _________________.

单项选择题In the second paragraph, the word real in real goods could best be replaced by_________________.

单项选择题According to the passage, _______________ 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