This passage talks about（）

单项选择题Which of the following has the closest meaning to the underlined word invaluable （）

A．useless
B．valueless
C．priceless
D．unvalued

单项选择题What conclusion may you come to from the first paragraph（）

A．Moral values for Americans are like those of other people.
B．Virtues of people are connected with certain culture.
C．Morality of a nation has an effect on its culture.
D．Stories and tradition can teach the people virtues.