Questions 21 to 25 are based on the following passage:

　　Perhaps the most startling theory to come out of kinetics, the study of body movement, was suggested by

( ) 21. Ray Birdwhistell believes that physical appearance .

A) has little to do with culture B) can be influenced by culture

C) is never changing D) varies from place to place

( ) 22. According to the passage, the final mouth shape is formed .

A) before birth B) as soon as one's teeth are permanently set

C) sometime after permanent teeth are set D) around 15 years old

( ) 23. Ray Birdwhistell can tell what region of the United States a person is from by .

A) how much he or she laughs B) how he or she raises his or her eyebrows

C) what he or she likes best D) the way he or she talk

( ) 24. People who live are more friendly.

A) in densely populated areas B) in the country

C) in New York City D) in the North

( ) 25. This passage might have been taken out of a book dealing with

A) physics B) chemistry

C) biology D) none of the above