Passage Two

　　The faces of elderly, happily-married people sometimes resemble each other. Dr. Aiken studied a number of couples who had been married for at least twenty-five years. Each couple provided four photographs---one photo of each partner at the time of their marriage and another photo of each partner twenty-five or more years later. All background was cut from the photos to remove any clues. The photos were then displayed in groups: a random grouping of the persons at the time of their marriage and another random grouping of the same persons who took photographs later. Some testees were asked to pick out the partners. They failed totally with the first group. Their judgments were no better than chance. But with the photos taken twenty-five or more years after the marriage, the testees were quite successful in deciding who was married to whom. They were particularly successful with the most happily-married couples.

　　Dr. Aiken believes there are several reasons why couples grow alike. One reason has something to do with imitation. One person tends to copy or do the same as someone else without knowing it. He says human begins to imitate the expressions of the faces of their loved ones. Another possible reason, he says, is the common experience of the couples. There is a tendency for people who have the same life experience to change their faces in similar ways. For example, if a couple suffered from a lot of sad experiences, their faces are likely to change in a similar way.

　　21. The main purpose of the passage is to _____.

　　A. tell how couples like each other

　　B. show the life experience of husband and wife

　　C. explain why couples grow alike

　　D. describe the study on a number of married people

　　22. In the testing, Dr. Aiken cut the background from those photos for the purpose of _________.

　　A. grouping those couples again

　　B. leaving no trace for the testees

　　C. imitating those couples’ life

　　D. leaving the testees more chances

　　23. The testees failed to _____.

　　A. tell couples by looking at their photos taken when they got married

　　B. distinguish happily-married couples from sadly-married couples

　　C. discover the difference of each partner

　　D. understand Dr. Aiken's study thoroughly

　　24. It can be inferred from the study that ________.

　　A. life experiences tend to change one’s expression

　　B. shared experiences may leave good impressions

　　C. couples may learn from each other in sharing experiences

　　D. couples tend to love and hate the same thing in life

　　25. From the passage we can draw a conclusion that __________.

　　A. happily-married couples are often richer than other couples

　　B. couples who look alike can live longer

　　C. the influence between couples can be quite strong

　　D. all couples have been proved to grow alike