D
There is probably no field of human activity in which our values and lifestyles are shown more clearly and strongly than they are in the clothes that we choose to wear. The dress of an individual is a kind of "sign language" that communicates a set of information and is usually the basis on which immediate impressions are formed. Traditionally, a concern for clothes was considered to be an affair of females, while men took pride in the fact they were completely lacking in clothes consciousness(意识).
This type of American culture is by degrees changing as man dress takes on greater variety and color. Even as early as 1995, a researcher in Michigan said that men attached rather high importance to the value of clothing in daily life. White－collar workers in particular viewed dress as a symbol of ability, which could be used to impress or influence others, especially in the work situation. The white－collar worker was described as extremely concerned about the impression his clothes made on his superiors(上司). Although blue－collar workers were less aware that they might be judged on the basis of their clothing, they recognized that any difference from the accepted pattern of dress would be made fun of by fellow workers.
Since that time, of course, the patterns have changed; the typical office worker may now be wearing the blue shirt, and the laborer a white shirt, but the importance of dress has not become less.      Other researchers in recent years have helped to prove its importance in the lives of individuals at various levels and in different social and economic status groups(阶层).
68．From the passage we know that______.
A．the Americans' values and lifestyles can't be shown clearly in their activity
B．the Americans' values and lifestyles are from the sign language
C．the clothes the Americans choose to wear have something to do with their values and lifestyles
D．the clothes the Americans choose to wear depend on a set of information
69．Traditionally, the Americans usually thought that______.
A．men should care much for clothes
B．women should concern greatly about what they wore but men shouldn't
C．both men and women must pay great attention to their clothes
D．neither men nor women didn't have to show interest in clothes
70．Blue－collar workers pay attention to their clothes because______.
A．they extremely concern about the impression their clothes make on their superiors
B．they know clearly that people will judge them on the basis of their clothing
C．they want to impress and influence others
D．they don't want to be laughed at
71．The passage mainly suggests that______.
A．the Americans pay great attention to the importance of clothes
B．now men in America have made more progress in clothes consciousness
C．now men in America care about clothes more than women do
D．the American culture is greatly changing