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